The Lotus 81 was a

Formula One Formula One (also known as Formula 1 or F1) is the highest class of international racing for open-wheel single-seater formula racing cars sanctioned by the Fédération Internationale de l'Automobile (FIA). The World Drivers' Championship, ...

racing car built by

Colin Chapman Anthony Colin Bruce Chapman (19 May 1928 – 16 December 1982) was an English design engineer, inventor, and builder in the automotive industry, and founder of Lotus Cars. In 1952 he founded the sports car company Lotus Cars. Chapman ...

's Lotus team for the

1980 Formula One season The 1980 Formula One season was the 34th season of FIA Formula One motor racing. It featured the 1980 ''World Championship of Drivers'' and the 1980 ''International Cup for F1 Constructors'', which were contested concurrently from 13 January ...

. Unlike many of forebears the 81 was not a terribly innovative or competitive car, coming as it did at a time when Chapman's interest in his racing activities was waning. Instead it was a very standard ground effect design with sliding skirts and the ubiquitous

Cosworth DFV The DFV is an internal combustion engine that was originally produced by Cosworth for Formula One motor racing. The name is an abbreviation of ''Double Four Valve'', the engine being a V8 development of the earlier four-cylinder FVA, which had fo ...

3.0 litre V8 powerplant. The car was said to generate a great deal of downforce but have excessive pitch sensitivity problems, ultimately leading Chapman to develop the innovative twin-chassis

Lotus 88 The Lotus 88 is an innovative Formula One car designed by Colin Chapman, Peter Wright, Tony Rudd and Martin Ogilvie of Lotus in an effort to maximise the downforce produced by ground effect. The Lotus 88 made its debut at the first practice ...

Mario Andretti Mario Gabriele Andretti (born February 28, 1940) is an Italian-born American former racing driver. One of the most successful drivers in the history of motorsports, Andretti is one of only two drivers to have won races in Formula One, IndyCar, t ...

and

Elio de Angelis Elio de Angelis (26 March 1958 – 15 May 1986) was an Italian racing driver who participated in Formula One between and , racing for the Shadow, Lotus and Brabham teams. He was killed in an accident while testing the Brabham BT55 at the Pau ...

used the 81 in all 14 rounds of the 1980 Formula One world championship, and the car also gave Nigel Mansell his Formula One debut, with the British driver lining up in a total of three races that season. The best result for the car was Elio de Angelis's 2nd place in Brazil. Chapman had intended to use the Lotus 88 for the season, but a massive furore over the legality of the new car meant that the 81 was kept on as a stop gap for the first four races Lotus competed in, as they boycotted the 1981 San Marino Grand Prix, with Mansell taking 3rd place in the Belgian Grand Prix and de Angelis claiming three points finishes. The car was replaced by the

Lotus 87 The Lotus 87 was a Formula One racing car used by Team Lotus in the second part of the 1981 Formula One season and in the first race of the 1982 season. Design and development The car, driven by Italian Elio de Angelis and future world champ ...

Complete Formula One results

( key) * Of those, 9 points were scored with the 81 model. {{F1 cars 1981 81 1980 Formula One season cars 1981 Formula One season cars