Sunday 9th May 1937
The Germans were in a class of their own at the Tripoli Grand Prix held at Mellaha. Tyre wear proved to be a decisive factor. The Auto Union drivers decided to race flat out and had to make many pit stops to change wheels while the Mercedes- Benz drivers tried to save their tyres. Caracciola, Stuck, Fagioli, von Brauchitsch, Rosemeyer and Lang all had their turn in the lead but Stuck and Fagioli fell back with tyre wear while Caracciola and Seaman slowed down due to sand in the engine. Von Brauchitsch retired and Rosemeyer had a slow pit stop, leaving Hermann Lang, who drove faultlessly, with the deserved victory followed by four Auto Unions. Nuvolari in an Alfa had retired early.