Claim: There was a total of 15 car entries in the 1951 Swiss Grand Prix held on May 27, 1951, in Bern.
Evidence: The 1951 Swiss Grand Prix was a Formula One motor race held on the 27 May 1951 in Bern. Ecurie Belge Philippe Étancelin Yves Giraud-Cabantous Ecurie Rosier HW Motors Scuderia Ferrari Alfa Romeo SpA Enrico Platé Ecurie Espadon Yves Giraud-Cabantous José Froilán González Scuderia Ferrari Francis Rochat Equipe Gordini Peter Hirt