- Rudolf Caracciola wins the Swiss Grand Prix in the pouring rain
- Richard Seaman takes second place after an exciting duel, Manfred von Brauchitsch is third
Richard Seaman had good reason to feel extremely confident ahead of the Swiss Grand Prix which was held in Bremgarten near Berne on 21 August 1938: a member of the Mercedes-Benz works team, the British driver had won the German Grand Prix at the Nürburgring four weeks earlier. He was to start in pole position in Berne and had also logged the best time of the day. But in the heavy rain, it was Rudolf Caracciola who won; Seaman was runner-up 26 seconds later with Manfred von Brauchitsch taking third place.
In August 1938, Mercedes-Benz triumphed in every race contested by the W 154 Silver Arrows: Hermann Lang’s victory in the Coppa Ciano in Montenero was followed a week later by Rudolf Caracciola’s win in the Coppa Acerbo in Pescara. But only four races counted towards the European Championship in the 1938 season: the French, German, Swiss, and Italian Grands Prix.