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 sports car. It was announced and its details first published on 19 September 1962. Variants include the MGB GT three-door 2+2 coupé (1965–1980), the six-cylinder sports car and coupé MGC (1967–69), and the eight-cylinder 2+2 coupé, the MGB GT V8 (1973–76).

Replacing the MGA in 1962, production of the MGB and its variants continued until 1980. 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 2000 cars before finally being replaced in 1995 by the MG F.

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. By making better use of space the MGB was able to offer more passenger and luggage accommodation than the earlier MGA while being 76 mm shorter overall.

The MGB was one of the first cars to feature controlled crumple zones designed to protect the driver and passenger in a 48 km/h impact with an immovable barrier.

The MGB achieved a 0–100 km/h time of just over 11 seconds. The 1,798 cc B-Series engine produced 95 hp.

All MGBs from 1962 to 1967 used a four-speed manual gearbox with a non-synchromesh, straight-cut first gear. Optional overdrive 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. 

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 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.

The MG SV Xpower is a sports car that was produced by British automobile manufacturer MG Rover. Manufactured in Modena, Italy and finished at Longbridge, United Kingdom, it was based on the platform of the Qvale Mangusta, formerly the De Tomaso Biguà, itself using parts from the Ford Mustang.

The production process was complex, partly caused by the use of carbon fibre, to make the body panels. The basic body parts were made in the United Kingdom by SP Systems, and then shipped to Belco Avia, near Turin, for assembly into body panels.

These were then assembled into a complete body shell, and fitted onto the box frame chassis and running gear, and shipped to the factory of MG Rover, in Longbridge, to be trimmed and finished. Several of the cars’ exterior and interior parts, were sourced from current and past models of Fiat.

The base MG XPower SV is powered by a 4.6 L Ford Modular V8 which is rated at 320 hp. The SV's advanced carbon fibre body helped it achieve a top speed of 266 km/h and a 0 to 100 km/h time of 5.3 seconds.

The XPower SV R, released the following year, features a Roush tuned, “cammer” 5.0 L 32 valve Modular V8. MG claimed the SV-R's engine was rated at 385 hp, however some sources claim this figure is actually closer to 410 hp.

The top speed was estimated to be around 282 km/h, and its 0 to 100 km/h time to be close to 4.9 seconds.

Unlike the base model SV, the SVR was offered with a choice of either manual or automatic transmissions.

According to the data at the MG XPower SV Club, approximately 82 cars were produced, excluding the four 'XP' pre production prototypes.

The MG Cyberster is an all-electric roadster concept car produced by SAIC Motor under the MG marque, revealed in 2021.The Cyberster - developed by the team at the MG Advanced Design Centre in London – is a two-door, two-seater sports car recalling the brand’s tradition, drawing a number of styling cues from the classic MGB Roadster while also ushering in new high-tech features, including an interactive gaming cockpit and 5G connectivity.

The Cyberster receives rear lights incorporating the United Kingdom flag (Union Jack) like the Mini John Cooper Works GP and interactive "Magic Eye" headlights that open when turned on like the first generation Mazda MX-5. It is electrically powered and has a range of 800 km.

The MG as single motor version has a mass of 1850 kg and power of 310 bhp. The dual motor version comes in at 1985 kg and 540 bhp.

0-100km/h time of less than three seconds is promised.