After the 72 was used at the first two races of the 1974 World Championship, the 76 made its debut at the
South African Grand Prix. Ickx qualified 10th and Peterson 16th, before a disastrous race saw the two collide early on, Peterson retiring immediately and Ickx eventually succumbing to brake failure. The
Spanish Grand Prix was more promising, Peterson qualifying second and Ickx fifth, and the Swede leading until his engine overheated, while Ickx also ran strongly before suffering another brake failure. Then, at the
Belgian Grand Prix, Peterson qualified fifth before retiring with a fuel leak, while in his home race Ickx could only qualify 16th before his engine overheated. Afterwards, both drivers insisted on going back to the 72, with which Peterson won in
Monaco and
France. Chapman responded by upgrading the 76 to 'B' specification, with enlarged sidepods and better cooling. The revised car first appeared at the
German Grand Prix, Peterson qualifying eighth and finishing fourth, just ahead of Ickx in the 72. Peterson then drove the 72 in the
Austrian and
Italian Grands Prix (winning the latter), leaving Ickx to drive the 76 in these races: the Belgian could only qualify 22nd in Austria and retired after a collision with
Patrick Depailler's
Tyrrell, while in Italy he qualified 16th before retiring with a broken throttle linkage. Both drivers then used the 72 for the final two races of the season, though the 76 was given one last drive in the
United States Grand Prix, when Lotus made a third entry for
Tim Schenken. The Australian driver failed to qualify, but nonetheless started the race, completing six laps before being disqualified. The team eventually had to accept that the 76 was a step in the wrong direction, and the whole project was scrapped in favour of keeping the 72 competitive. The 72 would go on to be used throughout the
1975 season. ==Complete Formula One World Championship results==