Niki Lauda wins second world title, then quits Ferrari at year's end • Porsche wins Le Mans for third straight year - Jacky Ickx, Jurgen Barth and Hurley Haywood driving a Martini 936 • AJ Foyt takes his final Indy 500 win, 16 years after his maiden victory at the Brickyard • FIAT scores its first WRC title • Gilles Villeneuve, Riccardo Patrese and Patrick Tambay all make their F1 debuts • Renault makes its first F1 start as BRM takes its last • F1 loses two stars. Tom Pryce is killed after striking a marshal at Kyalami while Carlos Pace dies in a plane crash • Wolf wins Argentinean Grand Prix on debut with Jody Scheckter • Tom Wheatcroft reopens the gates to Donington Park - closed since the beginning of the Second World War • Renault turbo F1 engine makes its debut at Sliverstone
- Niki Lauda wins three times and claims his second championship
- Jacky Ickx wins the Le Mans 24 Hours for the third year in a row
- AJ Foyt takes the last of his four Indianapolis 500 victories
- FIAT wins its first World Rally Championship title
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