Most Grand Prix participations
Only participations are counted, no matter how many cars an engine manufacturer entered for race.

Engine     # 1 Ferrari 795   2 Ford 524   3 Renault 442   4 Honda 340   5 Mercedes-Benz 282   6 BMW 270   7 Alfa Romeo 213   8 BRM 189   9 Petronas 151   10 Mugen Honda 147   11 Hart 145   12 Toyota 140   13 Matra 124   14 Cosworth 122   15 Yamaha 116   16 Peugeot 115   17 Maserati 107   18 Climax 97   19 Lamborghini 80   20 Judd 68   = TAG 68   22 Ilmor 53   23 Zakspeed 51   24 Motori Moderni 44   25 Gordini 40   26 Porsche 37   27 Repco 33   = Supertec 33   = Asiatech 33   30 Playlife 32   = Megatron 32   = Arrows 32   33 Vanwall 28   34 Alta 26   35 Weslake 18   36 Fondmetal 17   = European 17   = Acer 17   = Bristol 17   40 Mécachrome 16   41 Talbot 13   42 Offenhauser 12   43 Tecno 10   = Lea Francis 10   = Osella 10   46 OSCA 8   47 A.T.S. 7   48 Veritas 6   = Novi 6   50 Aston Martin 5   51 ERA 4   = Lancia 4   53 Platé 3   = Pratt & Whitney 3   = Milano 3   = Castellotti 3   57 Scarab 2   = Cummins 2   = Butterworth 2   60 Jaguar 1   = Borgward 1   = JAP 1   = Serenissima 1   = Speluzzi 1   = EMW 1   = Küchen 1   = Bugatti 1