Group C2

С двигателем Mazda Type 13B.

The C284 made its debut at the 1984 Monza 1000, where Mallock, Scottish David Duffield and Mike Wilds qualified the car twentyfirst and finished the race tenth, second in the C2 class. After Monza the car started two more rounds of the World Championship, Silverstone and Le Mans, didn’t finish both of them. Had its last race at Brands Hatch, in the 1984 British Grand Prix Thundersports supporting race, where it qualified second and retired because of a bad crash, that totalled the car.

В июле 1984 года спонсором стала компания KumSan Korea Red Ginseng Co. и автомобиль получил новую ливрею.

The Mazda 727C is a prototype racing car that was built for Mazdaspeed for the 24 Hours of Le Mans in the Group C2 class. It replaced the 717C in 1984 as an evolution of the Mooncraft-built design, and used the same 2-rotor 13B Wankel engine as the previous model. Two 727Cs were entered in the 1984 24 Hours of Le Mans, finishing 4th and 6th in the C2 class. However, a pair of Lola T616s run by B.F. Goodrich Company used the same Mazda engine and were successful in beating both 727Cs, claiming 1st and 3rd.

In 1985 Michael Cane Racing carried out extensive modifications to the car with design work being done by Richard Owen. The car now featured a revised rear suspension, a new bodywork and the removal of the ground effect. The car debuted at the 1985 1000 km of Silverstone race with drivers Tiff Needell, Steve O'Rourke and Bob Evans. The car qualified almost four seconds faster than it had done in 1983, but they did not finish the race.

Per la stagione 1985 fu approntata la nuova Gebhardt JC853, simile nella linea al modello JC843, dotata del Cosworth DFV e subito convertita al DFL 3,3 litri. Gareggiò con la Gebhardt Motorsport anche nel 1986, mentre per il 1987 fu dotata di un motore BMW e iscritta al campionato statunitense IMSA, categoria Light.