Jochen Rindt becomes Formula 1's only posthumous world champion • Piers Courage is killed in the Dutch Grand Prix • Bruce McLaren dies testing a Can-Am car at Goodwood • March Engineering enters F1 • Ken Tyrrell becomes an F1 constructor • Three-time world champion Jack Brabham retires from the sport • Dunlop Tyres withdraws from F1 • Richard Attwood and Hans Herrmann take Porsche's first Le Mans 24 Hours victory in the 917K • Al Unser Sr takes his maiden Indy 500 win and first USAC title • Steve McQueen shoots movie during Le Mans 24 Hours
- Richard Attwood and Hans Herrmann score Porsche's first Le Mans win
- Jochen Rindt becomes Formula 1's only posthumous world champion having died at Monza
- Al Unser Sr claims his maiden Indy 500 win and IndyCar title
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