- Swedish Grand Prix
- Lauda wins amidst fan car storm
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June 17, 1978: Niki Lauda secured his first win for Brabham, his new team, at the Swedish Grand Prix but it was a victory surrounded by controversy as it came in one of Formula One's most innovative and short-lived creations - the fan car
- Spanish Grand Prix
- Andretti leads home another Lotus one-two
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June 4, 1978: Mario Andretti won the Spanish Grand Prix with team-mate Ronnie Peterson second as Lotus triumphed at Jarama, their second 1-2 in succession