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{{EngvarB|date=October 2017}}
{{Use dmy dates|date=October 2017}}
{{Infobox automobile
| name = MG MGB
| image = MG MGB open roadster 1969.jpg
| caption = 1969 MGB roadster – rollover bar non-standard
| layout = [[FR layout]]
| manufacturer = {{ubl|[[British Motor Corporation]] (1963–1968)|[[British Leyland]] (1968–1980)|[[Rover Group]] (1993–1995)}}
| production = {{ubl|1962–1980 (original)|1992–1995 (MG RV8)}}
| predecessor = [[MG MGA|MGA]]
| successor = [[MG F / MG TF|MG F]]
| class = [[Sports car]]
| assembly = {{ubl|[[Abingdon, Oxfordshire|Abingdon]], England|[[Enfield, New South Wales|Enfield]], Australia<ref name=Aczel>[http://mgbsmadeinaustralia.org/wp-content/uploads/2013/07/History-of-Aust-Assembled-MGB-SAFETY_FAST_XXXX_2012.pdf Tom Aczel, ''History of the Australian-assembled MGB'', mgbsmadeinaustralia.org] {{webarchive|url=https://web.archive.org/web/20140714170941/http://mgbsmadeinaustralia.org/wp-content/uploads/2013/07/History-of-Aust-Assembled-MGB-SAFETY_FAST_XXXX_2012.pdf |date=2014-07-14 }} Retrieved on 8 July 2014</ref>|[[Zetland, New South Wales|Zetland]], Australia<ref>[http://mgb.mgcc.info/history2.html History of the MGB] mgb.mgcc.info. Retrieved on 21 December 2011</ref>|[[Longbridge plant|Longbridge]], England (MG RV8)}}
}}
The '''MGB''' is a two-door [[sports car]] manufactured and marketed from 1962 until 1980 by the [[British Motor Corporation]] (BMC), later the ''Austin-Morris'' division of [[British Leyland]], as a four-cylinder, soft-top [[Roadster (automobile)|sports car]]. It was announced and its details first published on 19 September 1962.<ref>{{cite news |title=New Sports Car Tops 107 M.P.H. | newspaper=The Times |date=20 September 1962 |page=5 |issue=55501}}</ref> Variants include the MGB GT three-door [[2+2 (car body style)|2+2]] [[coupé]] (1965–1980), the six-cylinder sports car and coupé [[MG MGC|MGC]] (1967–1969), and the eight-cylinder 2+2 coupé, the MGB GT V8 (1973–1976).
Replacing the [[MG MGA|MGA]] in 1962, production of the MGB and its variants continued until 1980, though fixed roof GT models ceased export to the US in 1974. Sales for the MGB, MGC and MGB GT V8 combined totaled 523,836 cars. After a 12-year hiatus, the MGB re-entered production as the heavily modified '''MG RV8''' with a limited run of 2,000 cars before finally being replaced in 1995 by the [[MG F]].
== History ==
Development of the MGB started at least as early as 1958 with the prototype known by its Abingdon codename; MG EX205.<ref>{{Cite web|url=https://www.mgownersclub.co.uk/mg-guides/mgb/mgb-gt-le|title=MGB GT LE|website=The MG Owners' Club}}</ref> In structure the car was a progressive, modern design in 1962, using a [[monocoque|unitary]] structure, instead of the traditional [[body-on-frame]] construction used on both the [[MG MGA|MGA]] and [[MG T-type]]s and the MGB's rival, the [[Triumph TR]] series.<ref name="Robson2004">{{cite book |last=Robson |first=Graham |title=Essential MG |url=https://books.google.com/books?id=Fp2oS9fse2IC&pg=PT106 |year=2004 |publisher=MotorBooks International |isbn=978-0-7603-2003-7 |pages=106– |quote=As with the Midget, MG took the brave decision to build the MGB around a monocoque structure. Although it meant that the capital cost of tooling was higher, the new car could be lighter and more rigid. Although MG's General ...}}</ref> However, components such as brakes and suspension were developments of the earlier 1955 MGA, with the B-Series engine having its origins in 1947. The lightweight design reduced manufacturing costs while adding to overall vehicle strength. Wind-up windows were standard, and a comfortable driver's compartment offered plenty of legroom.  A parcel shelf was fitted behind the seats.
The MGB achieved a 0–{{convert|60|mi/h|km/h|abbr=on}} time of just over 11&nbsp;seconds. The three-bearing 1,798&nbsp;cc [[BMC B-Series engine|B-Series]] engine produced 95&nbsp;hp (71&nbsp;kW) at 5,400&nbsp;rpm&nbsp;– upgraded in October 1964 to a five-bearing crankshaft.  From 1975, US-market MGB engines were de-tuned to meet emission standards, ride height was increased by an inch (25&nbsp;mm), and distinctive rubber bumpers were fitted to meet [[bumper (automobile)#first standards|bumper standards]].
The MGB was one of the first cars to feature controlled [[crumple zone]]s designed to protect the driver and passenger in a {{convert|30|mi/h|km/h|abbr=on}} impact with an immovable barrier (200 ton).<ref name="ref3">{{cite web
|title=MG/MGB/Chassis Info |publisher=Conceptcarz.com |url=http://www.conceptcarz.com/vehicle/chassisNum.aspx?carID=9759&iDNumID=428}}</ref><ref>{{cite web |url=http://www.mgb-stuff.org.uk/body.htm#2 |title=1967 MGB 30mph frontal impact into a concrete block, Abingdon in 1967 (scroll down) |publisher=Mgb-stuff.org.uk |access-date=2011-07-26}}</ref> Nevertheless, the British [[The Automobile Association|AA]] motoring association has described the car, like many other classic models, as much less safe than modern cars. The issue received public attention following a 2013 case in which a driver in a hired 1963 MGB was killed in a collision with a taxi.<ref name="AA issues warning to classic car owners after MG 'folded like a penknife'">{{cite web| title=AA issues warning to classic car owners after MG 'folded like a penknife' |url=https://www.telegraph.co.uk/news/uknews/law-and-order/11348271/AA-issues-warning-to-classic-car-owners-after-MG-folded-like-a-penknife.html |website=[[Daily Telegraph]] |date=15 January 2015 |access-date=28 March 2016|quote=Following the death of teacher Nick Sennett, the AA says classic cars 'simply do not have the damage resistance of modern vehicles'}}</ref>
A limited production of 2,000 units of the RV8 was produced by [[Austin Rover Group|Rover]] in the 1990s. Despite the similarity in appearance to the roadster, the RV8 had less than 5% parts interchangeability with the original car.{{Citation needed|date=April 2022}}
The MGB remains a popular choice for collectors due to inexpensive and readily available parts and simple mechanics.
== Drivetrain ==
[[File:Sectioned MGB at the British motoring heritage museum gaydon (3).jpg|thumb|A sectioned MGB showing engine and gearbox configuration]]
All MGBs (except the V8 and 6 cylinder versions) used the [[BMC B-Series engine]]. This engine was essentially an enlarged version of that used in the MGA with [[engine displacement]] being increased from 1,622 to 1,798 cc. The earlier cars used a three-main-bearing crankshaft, 18G-series. In February 1964 positive crank-case breathing was introduced and the engine prefix changed to 18GA, until October 1964, when a five-bearing crankshaft design was introduced, the engine prefix became 18GB. Horsepower was rated at 95 net bhp on both five-main-bearing and earlier three-bearing cars with peak power coming at 5,400 rpm with a 6,000 rpm redline. Torque output on the MGB had a peak of {{convert|110|lbft|Nm|abbr=on}} and fuel consumption was around 25 mpg.<ref>{{cite book |last=Willson |first=Quentin |title=The Ultimate Classic Car Book |year=1995 |publisher=DK Publishing, Inc. |isbn=0-7894-0159-2 |url=https://archive.org/details/ultimateclassicc00quen }}</ref> US specification cars saw power fall in 1968 with the introduction of emission standards and the use of air or smog pumps. In 1971 UK spec cars still had {{convert|95|bhp|abbr=on}} at 5,500 rpm, with {{convert|105|lbft|Nm|abbr=on}} torque at 2,500 rpm. Engine prefixes became 18V and the [[SU carburettor]] needles were changed for reasons of the latest emission regulations, under ECE15. By 1973 it was {{convert|94|bhp|abbr=on}}; by 1974 it was 87, with {{convert|103|lbft|Nm|abbr=on}} torque; by 1975 it was 85 with {{convert|100|lbft|Nm|abbr=on}}. Some California specification cars produced only around {{convert|70|hp|abbr=on}} by the late 1970s. The compression ratio was also reduced from 9:1 to 8:1 on US spec cars in 1972.
All MGBs from 1963 to 1974 used twin {{convert|1.5|in|mm|adj=on}} SU carburettors. US spec cars from 1975 used a single [[Zenith Carburettor Company (British)|Stromberg]] {{convert|1.75|in|mm|adj=on}} carburettor mounted on a combination intake–exhaust manifold. This greatly reduced power as well as created longevity problems as the (adjacent) catalytic converter tended to crack the intake–exhaust manifold. All MGBs used an SU-built electric [[fuel pump]].
All MGBs from 1962 to 1967 used a four-speed manual gearbox with a non-synchromesh, spur cut first gear. Optional overdrive<ref>{{cite book |last=Wilson |first=Quentin |title=The Ultimate Classic Car Book |year=1995 |publisher=DK Publishing |isbn=0-7894-0159-2 |url=https://archive.org/details/ultimateclassicc00quen }}</ref> was available. This gearbox was based on that used in the MGA with some minor upgrades to cope with the additional output of the larger MGB engine. In 1968 the early gearbox was replaced by a full synchromesh unit based on the MGC gearbox. This unit was designed to handle the 150net bhp of the three-litre engine of the MGC and was thus over-engineered when mated with the standard MGB B-Series engine. The same transmission was used in the 3.5-litre V8 version of the MGB-GT-V8. An automatic three-speed transmission was also offered as a factory option, but was unpopular.{{Citation needed|date=April 2022}}
Electrically engaged overdrive gearboxes were an available option on all MGBs. The overdrive unit was operational in third and fourth gears (until 1977, when overdrive was only operational in fourth)<ref name="custompistols.com">{{cite web|url=http://www.custompistols.com/cars/articles/ts_od_gearbox.htm |title=Overdrive Transmissions - Tom Sotomayor |access-date=2014-06-05 |url-status=dead |archive-url=https://web.archive.org/web/20130612124005/http://www.custompistols.com/cars/articles/ts_od_gearbox.htm |archive-date=2013-06-12 }}</ref> but the overall ratio in third gear overdrive was roughly the same as fourth gear direct. The overdrive unit was engaged by a toggle switch on the dashboard or by pulling the wiper lever towards the driver, model dependent. The switch was moved to the top of the gearshift knob in 1977.<ref name="custompistols.com"/> Overdrives were fitted to less than 20% of all MGBs.
There were three different types of overdrive transmissions fitted to the MGB.
'''1962–64, 1965–67'''
* Laycock Type D OD (note external solenoid)
* A hole in the bell housing where the starter nose poked through
* "Shield" shaped access cover
* 1020 TPM for OD and 1040 TPM for non-OD
The gearbox input shaft, flywheel and engine backing plate were changed with the advent of the five-main-bearing engine in 1965. Therefore, the transmission for a three-main-bearing engine (1962–1964) differed from its later counterpart.<ref name="custompistols.com"/>
'''1968 to 1974.5'''
* Laycock Type LH OD
* Rectangular shaped access cover
* Oval clutch fork boot
* Dipstick (for checking oil)
* Black label on the OD solenoid cover stamped "22/61972"
* 1280 TPM for OD and non-OD
* Speedometer drive gear (on the mainshaft) was blue
* Speedometer driven gear (on removable drive housing) was white with 21 teeth
<ref name="custompistols.com"/>
'''1974.5 to 1980'''
* Laycock Type LH OD
* Rectangular shaped access cover
* Square clutch fork boot
* Side fill plug (no dipstick)
* Blue label on the OD solenoid cover stamped "22/6/2005"
* 1000 TPM for OD and non-OD
* Speedometer drive gear (on the mainshaft) was red
* Speedometer driven gear (on removable drive housing) was red with 20 teeth
Overdrive operated in fourth gear only in units made from February 1977 onward.<ref name="custompistols.com"/>
[[File:Sectioned MGB at the British motoring heritage museum gaydon (2).jpg|thumb|A sectioned MGB showing the rear axle and differential]]
Early MGBs used the "banjo" type differential carried over from the MGA with the rear axle ratio reduced from the MGA's 4.1 (or 4.3) to 3.9 to 1. (Compensating for the reduction from 15&nbsp;inch to {{convert|14|in|mm|adj=on}} wheels). MGB GTs first began using a tube-type rear axle in 1967. This unit was substantially stronger, being, like the later gearbox, designed for the three-litre MGC. All MGBs used the tube-type axle from 1968.
All MGBs were fitted with {{convert|11|in|mm|adj=on}} solid (non-ventilated) disc brakes on the front with drum brakes on the rear. The front brake calipers were manufactured by Lockheed and used two pistons per caliper. The brake system on the MGB GT was the same as the roadster with the exception of slightly larger rear brake cylinders. A single-circuit hydraulic system was used before 1968 when dual-circuit (separate front and rear systems) were installed on all MGBs to comply with US regulations. Servo assistance (power brakes) was not standard until 1975. Many modern and contemporary testers have commented on the very heavy brake pedal pressure needed to stop the non-servo-assisted cars. {{Citation needed|date=October 2010}}
The MGB initially had an extremely simple electrical system. Dash-mounted toggle switches controlled the lights, ventilation fan, and wipers with only the direction indicators being mounted on a stalk on the steering column. The ignition switch was also mounted on the dash. Like the MGA, the MGB used [[car battery|two 6-volt batteries]] wired [[series circuit|in series]] to give a 12-volt positive earth configuration. The batteries were placed under a scuttle panel behind the seats making access difficult; the location gave excellent weight distribution and thus improved handling. The charging system used a Lucas dynamo. Later MGBs had considerable changes to the electrical system including the use of a single 12-volt battery, a change from positive to negative earth, safety-type toggle (rocker) switches, alternator in lieu of dynamo, additional warning lights and buzzers, and most common functions moved to steering column stalks.
From 1972 there were two different [[Pirelli Cinturato]] radial tyre sizes factory-fitted to new cars, depending on whether the car was a roadster,(155/80x14) or a GT (165/80x14). With the 1974.5 arrival of the rubber bumper cars the factory-fitted tyre size was simplified to 165/80x14 for all cars, irrespective of whether the car was a roadster or a GT, and also irrespective of the wheel type (wire or RoStyle). The factory built V8s were fitted with alloy wheels and full profile 175HR14 tyres. The "Jubilee" model, made to celebrate the 50th anniversary of the company in 1975, had the alloy wheels from the V8, allegedly because the V8 was not selling and they had a large stock.{{Citation needed|date=April 2022}} With a pre-war British racing green colour, tinted glass, gold body stipes and other gold trim, 751 Jubilees were made. One was destroyed in an advertising stunt that went wrong. There are thought to be about half of them left as of 2021.<ref>[https://www.mgbjubilee.com/ mgbjubilee.com]</ref> The final 1,000 LE models were the last cars to leave the factory with alloy wheels.
== Roadster ==
{{Infobox automobile
| name         = MGB roadster
| image        = 1963 MG B.jpg
| caption      = 1963 MG B roadster
| production   = 1962–1980
| body_style   = 2-door [[Roadster (automobile)|roadster]]
| engine       = 1.8 L ''[[BMC B-Series engine|B-Series]]'' [[Straight-4|I4]]
| transmission = {{ubl|4-speed manual|3-speed ''[[Borg-Warner 35 transmission|Borg-Warner 35]]'' automatic (UK only)}}
| length       = {{ubl|{{convert|3886|mm|in|1|abbr=on}}|{{convert|4019|mm|in|1|abbr=on}} (rubber bumper version)<ref name=BritishCars>{{cite book |last=Culshaw |author2=Horrobin |title=Complete Catalogue of British Cars |year=1974 |publisher=Macmillan |location=London |isbn=0-333-16689-2}}</ref>}}
| width        = {{convert|1524|mm|in|1|abbr=on}}<ref name=BritishCars/>
| height       = {{ubl|{{convert|1219|mm|in|1|abbr=on}}|{{convert|1295|mm|in|1|abbr=on}} (rubber bumper version)<ref name=BritishCars/>}}
| wheelbase    = {{convert|2312|mm|in|1|abbr=on}}<ref name=Autocar1968>{{cite magazine| title = Autotest – MG MGC Automatic|magazine=[[Autocar (magazine)|Autocar]] | volume = 129 (nbr 3795)| pages =10–14 |date = 7 November 1968}}</ref>
}}
[[File:1974 MGB roadster gunmetal.jpg|thumb|Early 1974 MGB (US model)]]
[[File:1978 MG B 1.8 Rear.jpg|thumb|Rear of a late "black bumper special" MGB, showing changes introduced in 1974 to meet new US regulations.]]
The roadster was the first of the MGB range to be produced. The body was a pure two-seater; a small rear seat was a rare option at one point. The MGB offered better space utilisation to passengers and luggage than the preceding MG&nbsp;A, despite being both {{convert|3|in|cm|1|abbr=on}} shorter in wheelbase and overall length, and {{cvt|2|in|cm|1}} lower. Growing in width by the same, gave the MGB a distinctly lower and more squat stance than its forebear. The suspension was softer, giving a smoother ride,{{cn|date=December 2023}} and the larger engine gave a slightly higher top speed.  The four-speed gearbox was an uprated version of the one used in the MGA with an optional (electrically activated) overdrive transmission.  Wheel diameter dropped from 15 to {{cvt|14|in|cm|0}}.
In late 1967, enough changes were introduced for MG to declare the 1968 model year a Mark II model.<ref>{{Cite book|title = Original MGB - With MGC and MGB GT V8|last = Clausager|first = Anders Ditlev|publisher = Herridge & Sons Ltd|year = 2010|isbn = 978-1-906133-18-4|location = United Kingdom|pages=10, 16, 18, 19, 25, 33, 34, 35, 40, 43}}</ref> Changes included new gearboxes with revised ratios and synchromesh on all four gears, an optional [[Borg-Warner 35 transmission|Borg-Warner 35]] [[automatic transmission|automatic gearbox]] (except in the US, peculiarly), a new rear axle, and an alternator in place of the [[Dynamo (electrical)|dynamo]] with a change to a negative earth system. The Mk&nbsp;II's new gearboxes required significantly altered floorpan sheet metal with a new, flat-topped transmission tunnel.
To meet US safety regulations for the 1968 model year, the MGB received a plastic and foam rubber covered "safety" dashboard, dubbed the "Abingdon pillow", and dual circuit brakes. Other markets continued with the steel dashboard.  Rubery Owen RoStyle wheels were introduced to replace the previous pressed steel versions in 1969 and reclining seats were standardised.{{citation needed|date=February 2017}}
1969 also saw three windscreen wipers instead of two to sweep the required percentage of the glass (US market only), high seat backs with head restraints and side marker lamps. The next year saw a new front grille, recessed, in black aluminium.  The more traditional-looking polished grille returned in 1973 with a black "honeycomb" insert. In North America, 1970 saw split rear bumpers with the number-plate in between, 1971-1974 returned to the earlier single-piece full-length style chrome bumper.{{citation needed|date=February 2017}}
Further changes in 1972 were to the interior with a new [[fascia (car)|fascia]].
To meet impact regulations, 1974 US models had the chrome bumper over-riders replaced with oversized rubber ones, nicknamed "[[Dagmar bumper#Other Iterations|Sabrinas]]" after the British actress [[Sabrina (actress)|Sabrina]]. In the second half of 1974 the chrome bumpers were replaced altogether. A new, steel-reinforced black rubber bumper at the front incorporated the grille area as well, giving a major restyling to the B's nose, and a matching rear bumper completed the change.
New US headlight height regulations also meant that the headlamps were too low. Rather than redesign the front of the car, British Leyland raised the car's suspension by {{convert|1|in|mm|adj=on}}. This, in combination with the new, far heavier bumpers, resulted in significantly poorer handling. For the 1975 model year only, the front [[anti-roll bar]] was deleted as a cost-saving measure (though still available as an option). The damage done by the British Leyland response to US legislation was partially alleviated by revisions to the suspension geometry in 1977, when a rear anti-roll bar was made standard equipment on all models. US emissions regulations also reduced horsepower.
In March 1979 British Leyland started the production of black painted limited edition MGB roadsters for the US market, meant for a total of 500 examples. Due to a high demand for the limited edition model, production ended with 6,682 examples. The UK received bronze-painted roadsters and a silver GT model limited edition. The production run of homemarket limited edition MGBs was split between 421 roadsters and 579 GTs.
The last MGB roadster produced at Abingdon returned to [[Abingdon County Hall Museum]] on 1 December 2011, with the help of [[British Motor Heritage]].<ref>{{cite web |url=https://www.youtube.com/watch?v=GP-RtYmp_uk  |archive-url=https://ghostarchive.org/varchive/youtube/20211212/GP-RtYmp_uk| archive-date=2021-12-12 |url-status=live| title=Television news item |publisher=[[BBC Oxford News]] | work=[[YouTube]] | date=1 December 2011 |access-date=8 July 2012}}{{cbignore}}</ref> It was lifted up 30 feet through a first floor window of the [[Grade I listed]] building with inches to spare<ref>{{cite web |url=http://www.abingdonmuseum.org.uk/museummg01.htm  | title=MG Exhibition |publisher=[[Abingdon County Hall Museum]] | location=Abingdon-on-Thames, UK | access-date=8 July 2012}}</ref> and now forms part of the collection on display in the main gallery.<ref>{{cite web |url=https://ehive.com/account/4128/object/125647/MG_roadster_soft_top | title=MG roadster, soft top; MG Works; 23.10.1980AD; BMHT Loan.1 |publisher=[[Abingdon County Hall Museum]] | work=[[eHive]], [[Vernon Systems]] | access-date=8 July 2012}}</ref>
Work on a successor for the MGB had been undertaken as early as 1964 with the EX234, but due to the excellent sales of the MGB and [[MG Midget]], BMC cancelled it in 1966.<ref>{{cite web |url=https://www.aronline.co.uk/concepts/concepts-and-prototypes/sports-car-projects-mg-ex234/|title=Sports car projects : EX234 |publisher=Austin Rover Online |date=29 June 2016|access-date=23 August 2018}}</ref> In 1968 a second proposed replacement was developed, the ADO76, but British Leyland had ceased work on that project by the end of 1970; the ADO76 would ultimately become the rubber-bumper version of the MGB in 1974.<ref name="aronline1">{{cite web |url=https://www.aronline.co.uk/concepts/concepts-and-prototypes/sports-car-projects-ado76/ |title=Sports car projects : ADO76 |publisher=Austin Rover Online |date=25 June 2011|access-date=23 August 2018}}
</ref> A third MGB replacement was developed in 1969, this time with a mid-mounted BMC E-series engine, semi-independent Hydrolastic suspension and Ferrari-like styling. This was cancelled in 1970 in favour of the more-conventional Triumph Bullet, which later became the TR7.<ref>{{cite web |url=https://www.aronline.co.uk/concepts-and-prototypes/mg-ado21/ |title=MG ADO21 - the mid-engined sporting might-have been |date=19 March 2023 |publisher=Austin Rover Online |access-date=18 December 2023}}</ref> When the [[Abingdon, Oxfordshire|Abingdon]] factory finally closed in late 1980, British Leyland did not replace it, with the EX234 prototype finally being sold at auction in 2016.
The decision to discontinue the MGB came about largely due to the poor sales performance of the [[Triumph TR7]], which had largely taken over as BL's contemporary offering in the small sports car market.  BL management felt that continued production of the MGB was cannibalising the TR7's sales and this therefore was a justification for taking it off the market.  However, the TR7 failed to sell and was axed a year later.  The MG marque was subsequently used to [[badge engineering|badge engineer]] sports versions of the [[Austin Metro]], [[Austin Maestro]] and [[Austin Montego]] throughout the 1980s, prior to the re-emergence of the MGB in late 1992 as the MG RV8.
{{Clear}}
== GT ==
{{Infobox automobile
| name         = MGB GT
| image        = 1969 MG B GT 1.8.jpg
| production   = 1965–1980
| body_style   = 2-door [[hatchback]] [[coupé]]
| engine       = 1.8 L ''[[BMC B-Series engine|B-Series]]'' [[Straight-4|I4]]
| length       = {{ubl|{{convert|3886|mm|in|1|abbr=on}}|{{convert|4019|mm|in|1|abbr=on}} rubber bumper version<ref name="BritishCars" />}}
| width        = {{convert|1524|mm|in|1|abbr=on}}<ref name="BritishCars" />
| height       = {{ubl|{{convert|1238|mm|in|1|abbr=on}}|{{convert|1295|mm|in|1|abbr=on}} rubber bumper version<ref name="BritishCars" />}}
| wheelbase    = {{convert|2312|mm|in|1|abbr=on}}<ref name="Autocar1968" />
| designer = [[Pininfarina]]
}}
The fixed-roof MGB GT was introduced in October 1965. Production continued until 1980, although export to the US ceased in 1974. The MGB GT sported a [[Greenhouse (automotive)|greenhouse]] designed by [[Pininfarina]] and launched the sporty "[[hatchback]]" style.  By combining the sloping rear window with the rear deck lid, the B GT offered the utility of a station wagon while retaining the style and shape of a coupe. This new configuration was a 2+2 design with a right-angled rear bench seat and far more luggage space than in the roadster. Relatively few components differed, although the MGB GT did receive different suspension springs and anti-roll bars and a different windscreen which was more easily and inexpensively serviceable. In 2019, ''[[Road & Track]]'' named the GT one of the "16 of Pininfarina's Most Beautiful Designs That Aren't Ferraris."<ref name="refpinin">{{cite web
|title        = 16 of Pininfarina's Most Beautiful Designs That Aren't Ferraris
|publisher    = Road & Track
|date         = August 14, 2019
|url          = https://www.roadandtrack.com/car-culture/g6661/ten-of-the-best-looking-cars-pininfarina-ever-designed-that-arent-ferraris/?slide=14}}</ref>
Although acceleration of the GT was slightly slower than that of the roadster, owing to its increased weight, top speed improved by {{convert|5|mph|kph|abbr=on}} to {{convert|105|mph|kph|abbr=on}} because of better aerodynamics.
A special edition of the GT was produced in 1975 for the 50th Anniversary of the MG Car Company. It was in pre-war British Racing Green, had tinted glass, gold body stripes, V8 alloy wheels painted in gold and black, and other gold trim. 751 Jubilees were made, one of which was destroyed in an advertising stunt that went wrong. There are thought to be about half of them left as of 2021.
The MGB Berlinette produced by the Belgian coach builder [[Jacques Coune]] used a raised windscreen to accommodate the fastback. Fifty-six were produced.<ref>[http://www.coachbuild.com/index.php?option=com_gallery2&Itemid=50&g2_itemId=25285 Coune MGB Berlinette, www.coachbuild.com] {{Webarchive|url=https://web.archive.org/web/20171024043120/http://www.coachbuild.com/index.php?option=com_gallery2&Itemid=50&g2_itemId=25285 |date=24 October 2017 }} Retrieved 13 June 2016</ref>
<gallery widths="200" heights="140">
File:1967 MG MGB GT rear.jpg|MGB GT (1967)
File:1978 MG B GT 1.8 Rear.jpg|MGB GT (1978)
File:Jubilee MGB GT KSR12P.jpg|An MGB GT Jubilee
File:MGB Berlinette by Jacques Coune Carrossier of Belgium c.1964-70 (16324263678).jpg|MGB Berlinette by [[Jacques Coune]] Carrossier of Belgium
</gallery>
{{Clear}}
== MGC ==
{{Infobox automobile
| name         = MGC & MGC GT
| image        = MG MGC GT 20090816 front.JPG
| caption = MGC GT
| production   = 1967–1969
| body_style   = {{ubl|2-door roadster|2-door [[coupe]]}}
| engine       = 2.9 L ''[[BMC C-Series engine|C-Series]]'' [[Straight-six engine|I6]]
| predecessor = [[Austin-Healey 3000]]
}}
[[File:MG MGC GT 1968.jpg|thumb|1968 MGC GT]]
The MGC was a 2,912&nbsp;cc, [[straight-six]] version of the MGB sold from 1967 and produced until August 1969<ref name=Autocar197109>{{cite magazine | title=Used Car Test:1969 MGC |magazine=[[Autocar (magazine)|Autocar]] |volume=135 nbr 3940 |pages=18–19 |date=30 September 1971}}</ref> with some sales running on into 1970.  The car was given the model code ADO52. It was intended as a replacement for the [[Austin-Healey 3000]] Mk. III which would have been ADO51 but in that form never got beyond the design proposal stage. The first engine to be considered was an Australian-designed six-cylinder version of the BMC B-Series but the production versions used a new seven-main-bearing development of the Morris Engines designed [[BMC C-Series engine|C-Series]] that was also to be used for the new [[Austin 3-litre]] four-door saloon.  In the twin SU carburettor form used in the MGC the engine produced {{convert|145|bhp|abbr=on}} at 5,250 rpm.<ref name=Motortest>{{cite book |title=The Motor. Road test. |date=4 November 1967 }}</ref> The body shell needed considerable revisions around the engine bay and to the floor pan, but externally the only differences were a distinctive bonnet bulge to accommodate the relocated radiator and a teardrop for carburettor clearance. It had different brakes from the MGB, 15&nbsp;inch wheels with Pirelli Cinturato 165HR15 tyres (CA67).<ref>{{Cite web|url=http://www.cinturato.net/page/index |archive-url=https://web.archive.org/web/20120131212653/http://www.cinturato.net/page/index |url-status=dead |archive-date=31 January 2012 |title=Pirelli Cinturato ™ |website=www.cinturato.net |access-date=14 February 2017 }}</ref> a lower geared rack and pinion and special [[torsion bar]] suspension with telescopic dampers.  Like the MGB, it was available as a coupé (GT) and roadster. An overdrive gearbox or three-speed automatic gearbox were available as options. The car was capable of 120&nbsp;mph (193&nbsp;km/h) and a 0–60&nbsp;mph time of 10.0&nbsp;seconds.<ref name=Motortest/>
The heavy engine (209&nbsp;lb heavier than the 1,798&nbsp;cc MGB engine) and new suspension changed the vehicle's handling, and it received a mixed response in the automotive press. It later transpired that the BMC press department had set the [[Cold inflation pressure|tyre pressures]] of the cars in the launch fleet incorrectly (to the same values as the standard MGB) and that even the correct pressures were insufficient to get the best handling from the car.
The MGC was cancelled in 1969 after less than two years of production.
At the time of the car's launch the manufacturers stated that the [[Austin-Healey 3000]] would continue to be offered as a parallel model priced on the domestic market at £1,126, compared to the MGC's £1,102.<ref name=Autocar196711>{{cite magazine |title=Autocar Road Test: MG MGC: New derivative of MGB with six-cylinder engine&nbsp;... Lack of low speed torque and engine reluctant to rev. Very noisy fan. New all synchromesh gearbox works well but has odd choice of ratios with overdrive. Heavy fuel consumption. Light brakes, with some fade. Good ride; strong understeer; steering low geared. Lots of leg-room. Heater extra. Good finish|magazine=[[Autocar (magazine)|Autocar]] |volume=127 (nbr 3744) |pages=28–32 |date=16 November 1967 }}</ref>
[[File:MGC-orig-engine.jpg|thumb|1969 MGC engine bay with correct engine colour, brake servos, and original US emissions.]]
In 1967 [[Prince Charles]] took delivery of an MGC GT (SGY 766F), which he passed down to [[Prince William, Duke of Cambridge|Prince William]] 30 years later.<ref>{{cite web |url=http://www.mgcars.org.uk/mgcc/sf/990906.htm |title=Safety Fast September 99 – MGC Newsletter |publisher=Mgcars.org.uk |access-date=2009-12-11}}</ref>
[[File:MGC1969.jpg|thumb|MGC roadster (1969 US specification)]]
<gallery widths="200" heights="150">
File:1968 MG C Roadster (9030168309).jpg|MGC roadster (1968)
File:MG MGC GT 20090816 rear.JPG|MGC GT
File:MG C GT Coupe (1968) - 14267790329.jpg|MGC GT
File:Goodwood_edited-267_(53864146727).jpg | MGC GT Sebring
</gallery>
{{Clear}}
== MGB GT V8 ==
{{anchor|MGB GT}}
{{Infobox automobile
| name         = MGB GT V8
| image        = 1975 MG B GT V8 3.5.jpg
| caption      = MGB GT V8
| production   = 1973–1976
| body_style   = 2-door [[coupe]]
| engine       = 3.5 L ''[[Rover V8 engine#3.5 L|Rover]]'' [[V8 engine|V8]]
}}
MG began offering the MGB GT V8 in 1973 powered by the aluminium block/aluminium head 3,532&nbsp;cc [[Rover V8 engine]], first fitted to the [[Rover P5B]]. The V8's {{cvt|137|hp|kW|0}} and {{convert|193|lbft|Nm|0|abbr=on}} of torque allowed it to reach {{convert|60|mi/h|km/h|abbr=on}} in 7.7&nbsp;seconds and go on to a {{convert|125|mi/h|km/h|abbr=on}} top speed. Fuel consumption was just under 20 mpg.<ref>Motor Magazine 25/8/1973</ref>
By virtue of its aluminium cylinder block and heads, the Rover V8 engine weighed approximately 20 kilos less than MG's iron [[Straight-4|four-cylinder]]. Unlike the MGC, the V8 that provided the MGB GT V8's increased power and torque did not require significant chassis changes nor sacrifice handling.
Both chrome and rubber-bumpered GT versions of the V8-powered MGB were produced by the factory with production ending in 1976. MG never attempted to export the MGB GT V8 to the United States. It chose not to even develop a left-hand-drive version of the MGB GT V8, although the Rover V8 engine had been offered in certain US-bound Rover models. The P6 3500, however, was withdrawn from the US after 1971 and the Rover 3500 SD1 only introduced in 1980 (its engine equipped with power-sapping emissions equipment) so that during the lifetime of the MGB GT V8 the engine was not being built in a federal version. Abingdon built seven LHD examples, sent them to America to achieve certification, and brought them back to the UK to be sold to mainland European countries.<ref>{{cite web|url=http://www.v8registerdata.net/viewreply.asp?task=ViewReply&subtask=Archive&id=2001&mtid=(1,2,3,4,7,8,9)|website=V8 Bulletin Board|title=Anybody Know Where They Are?|access-date=18 December 2019}}</ref>{{better source needed|date=December 2019}}
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== MG RV8 ==
{{Infobox automobile
| name = MG RV8
| image = 1994 MG RV8 3.9.jpg
| caption = MG RV8
| production = 1992–1995
| body_style = 2-seat [[Roadster (automobile)|roadster]]
| engine = 3.9 L  ''[[Rover V8 engine#3.9/4.0|Rover]]'' [[V8 engine|V8]]
}}
Subsequent to the launch of the [[Mazda MX-5]] in 1989,  [[British Motor Heritage]] (by then owned by [[Austin Rover Group|Rover Group]]) had placed the MGB bodyshell back in production to serve the MGB restoration market.  The success of the MX-5 had given Rover confidence that the market for 2 seater roadsters had re-emerged, and the decision was taken in 1991 to create an updated MGB model.  The suspension was only slightly updated, sharing the leaf spring rear of the MGB. The boot lid and doors were shared with the original car, as were the rear drum brakes. The engine was the 3.9-litre version of the aluminium Rover V8, similar to the one previously used in the MGB GT V8. A [[limited-slip differential]] was also fitted.  The MG RV8 debuted at the [[British International Motor Show]] in October 1992.{{Citation needed|date=April 2022|reason=Each sentence in this paragraph needs sourcing}}
The British Motor Heritage manufactured bodyshell was painted at Rover's [[Plant Oxford|Cowley]] plant before final assembly at Cowley where the cars were hand-built in a separate unit, the LVA . The interior featured [[wood veneer|veneered]] burr elm woodwork and [[Connolly leather]].<ref>{{cite web|author=David Dolbel |url=http://www.mgrv8.com/presentrv8.php |title=Presenting the MG RV8 at |publisher=Mgrv8.com |date=2010-09-12 |access-date=2010-11-28}}</ref>
The engine produced 190&nbsp;bhp (142&nbsp;kW) at 4,750&nbsp;rpm, achieving 0–60&nbsp;mph (96&nbsp;km/h) in 5.9&nbsp;seconds. Largely due to the rear drum brakes and rear leaf springs, the RV8 was not popular with road testers.{{Citation needed|date=April 2022}}  The high price of the car put it in direct competition with contemporary rivals from specialist manufacturers such as [[TVR]] which offered modern technology and a more up to date driving experience.
A large proportion of the limited MG RV8 production went to Japan&nbsp;– 1,579 of the 1,983 produced.<ref>{{Cite news|url=http://autoweek.com/article/car-life/one-last-hurrah-1994-mg-rv8|title=One last hurrah: the 1994 MG RV8|work=Autoweek|access-date=2018-04-18}}</ref> In the UK, 330 RV8s were sold initially.<ref name="ref22">{{cite web
| title =  MG RV8 (1992–1995)
| publisher = rac.co.uk
| url = http://www.rac.co.uk/buying-a-car/car-reviews/mg/rv8/207635 |access-date= 7 November 2014}}</ref> Several hundred (possibly as many as 700) of these cars were reimported back to the UK and also Australia between 2000 and 2010, with a peak number of 485 registered at the [[DVLA]] in the UK.<ref name="ref24">{{cite web
| title =  Number of vehicles licensed or SORN, since 1994
| publisher = howmanyleft.co.uk
| url = https://www.howmanyleft.co.uk/vehicle/mg_rv8 |access-date=7 November 2014}}</ref> Several observers consider the RV8 a continuation of the MGB model.<ref name="ref23">{{cite web
| title =  MG RV8 A Clever Reboot of the MG Sports Car Franchise
| publisher = Hemmings.com
| url = http://www.hemmings.com/hmn/stories/2010/07/01/hmn_feature4.html}}</ref><ref>[http://www.mgrv8.com/ MGRV8.COM ''(retrieved 17 April 2014)'']</ref><ref>[http://classics.honestjohn.co.uk/reviews/mg/rv8/ Honest John ''(retrieved 17 April 2014)'']</ref><ref>[http://www.aronline.co.uk/blogs/news/mg-news/the-cars-mg-rv8/ Aronline ''(retrieved 17 April 2014)'']</ref><ref>{{cite web |url=https://www.v8register.net/FilesDHT/MG%20RV8%20Story%20091111.pdf |title=MG RV8: The Manufacturing Story | author = Allan and Wilder | date = 2011 |publisher=the MG Car Club Ltd. |via=www.v8register.net |access-date=4 October 2021}}</ref>
No [[left hand drive]] examples were produced.
{{Clear}}
== Australian assembly ==
The MGB was assembled in Australia from 1963 to 1972,<ref>[http://www.carpoint.com.au/reviews/2005/story/mg/mg-mgb-roadster-19631972-3893 MG MGB Roadster (1963–1972)] www. carpoint.com.au. Retrieved on 21 December 2011</ref> during which time approximately 9,000 were sold.<ref name=Autocar197211>{{cite magazine |magazine=[[Autocar (magazine)|Autocar]] |volume=137 (nbr 3992) |title=News: MGB ends down under |page=15 |date=30 November 1972}}</ref> The cars were assembled from [[complete knock down]] kits shipped from England.<ref name=Autocar197211/> Initially, assembly was undertaken by the [[Pressed Metal Corporation]] at its [[Enfield, New South Wales|Enfield]] facility, but was subsequently moved to [[BMC Australia]]’s [[Zetland, New South Wales|Zetland]] plant in 1968.<ref name=Aczel/> Australian assembly ended in 1972 when the government issued a requirement that, to enjoy favourable tariff treatment, locally produced cars should feature 85% local content.<ref name=Autocar197211/> At the time, the local content of the Australian assembled MGBs was evaluated as just 45%.<ref name=Autocar197211/> All MGBs assembled in Australia were roadsters.<ref name=Aczel/>
== Motor sport ==
[[File:Front 02Wiki.jpg|thumb|1965 MGB to FiA Appendix K Specification with period race modifications. Very similar to the cars that raced in the 1960s.]]
Specially tuned MGBs (including some with aluminium panels) were successful in international road competition events, scoring a [[Group 3 (racing)|Grand Touring category]] victory in the 1965 [[Rallye Automobile Monte Carlo|Monte Carlo Rally]].<ref>[https://books.google.com/books?id=RVQEAAAAMBAJ Readers' guide to who won at Monte Carlo, British Motor Corporation advertisement, Life Magazine, 14 February 1964, page 81] Retrieved from books.google.com.au on 22 December 2011</ref>  Circuit racing wins included the Guards 1000 miles race at [[Brands Hatch]] in 1965 and the 84-hour Marathon de la Route at the [[Nürburgring]] in 1966.<ref name= Twite>ML Twite, The World's Racing Cars, Fourth Edition, 1970, page 104</ref> MGBs also won the [[Group 3 (racing)|GT Category]] in the [[1966 Targa Florio]], the [[1966 Spa 1000]] and the [[1967 Spa 1000]].<ref name=Twite/>
{{Clear}}
== Gallery ==
<gallery widths="200px" heights="140px">
File:1966 MGB GT.jpg|1966 MGB GT
File:MGB Roadster 1972 Interior left.jpg|MGB roadster 1972 interior
File:MGB Roadster 1973.JPG|MGB roadster 1972 UK
File:1973 MGB 'Tourer' fitted with 'Factory Hardtop'.jpg|1973 MGB "tourer" fitted with "factory hardtop"
File:1975 MG B convertible.jpg|North American "rubber bumper" MGB (1975)
File:MG B 01 rear.jpg|Early MGB roadster with optional hardtop fitted
File:1975 MGB 141.jpg|Front view of a 1975 MGB rubber bumper series
File:1994 MG RV8 in Red, rear left (Greenwich).jpg|Rear view of the MG RV8, unusual in Flame Red
</gallery>
== Notes ==
{{Reflist|30em}}
== References ==
{{Commons category|MG B}}
{{Refbegin}}
* {{cite book | last=Bonds | first=Ray | title=The Illustrated Directory of Sports Cars | publisher=Motorbooks | year=2003 | isbn=0-7603-1420-9}}
* {{cite book | last=Clausager |first=Anders Ditlev | title=Original MGB With MGC and MGB GT V8 | publisher=Bay View Books Ltd | year=1994 | isbn=1-870979-48-6}}
* {{cite book | last=Heilig |first=John | title=MG Sports Cars | publisher=Motorbooks | year=1996 | isbn=0-7603-0112-3}}
*{{Holmes-UltConv | pages=106–107}}
* {{cite web | title=MGB Home Page | work=MG Enthusiasts | url=http://www.mgcars.org.uk/mgb.html | access-date=21 March 2005 }}
* {{cite web | title=MGC Home Page | work=MG Enthusiasts | url=http://www.mgcars.org.uk/mgc.html | access-date=21 March 2005 }}
* {{cite web | title=MGB Buyers Guide | work=British Owners Group | url=http://www.sportscarwarehouse.com/mgb-buyers-guide.html | access-date=21 March 2009 }}
* {{cite web | title=MGB Buyers Guide | work=[[Classic Motorsports]] magazine | url=http://classicmotorsports.net/articles/mgb/ | access-date=7 April 2009 | url-status=dead | archive-url=https://web.archive.org/web/20090923194108/http://classicmotorsports.net/articles/mgb/ | archive-date=23 September 2009 }}
* {{cite web
|last=Adams
|first=Keith
|url=http://www.austin-rover.co.uk/
|title=The Unofficial Austin Rover Web Resource
|url-status=dead
|archive-url=https://web.archive.org/web/20100930044607/http://austin-rover.co.uk/
|archive-date=2010-09-30
}}
{{Refend}}
{{Leyland Cars}}
{{Rover Cars}}
{{British Motor Holdings and British Leyland cars, 1966-1986}}
{{Rover Group cars, 1986-2005}}
{{Authority control}}
{{DEFAULTSORT:Mg Mgb}}
[[Category:MG vehicles|B]]
[[Category:Roadsters]]
[[Category:Coupés]]
[[Category:Rear-wheel-drive vehicles]]
[[Category:Cars introduced in 1962]]
[[Category:1970s cars]]
[[Category:1980s cars]]
[[Category:1990s cars]]
[[Category:Pininfarina]]
[[Category:Cars discontinued in 1980]]