Race Win Ratio

until 1988 Monaco GP

Ignore Indy 500 races
Ignore non-championship races
Note: records involving non-championship races may be inaccurate due to incomplete data.

Finishing position:

Pos	Car Manufacturer	Race Win Ratio	Race Wins	Entries
1	Ferguson	50.00%	1	2
1	Mercury	50.00%	1	2
3	EMW	33.33%	7	21
4	IFA	25.00%	2	8
4	Reif	25.00%	2	8
6	Mercedes	23.26%	10	43
7	Ralt	16.67%	2	12
8	Vanwall	14.61%	13	89
9	Watson	13.64%	3	22
10	Lancia	12.12%	4	33
11	Williams	11.86%	44	371
12	Epperly	11.76%	2	17
13	Ferrari	10.79%	173	1603
14	Alfa Romeo	10.26%	35	341
15	Matra	9.63%	13	135
16	Lotus	8.47%	178	2102
17	BMW	7.87%	7	89
18	McLaren	7.28%	77	1058
19	Simca-Gordini	6.74%	12	178
20	Lyncar	6.67%	1	15
21	Connaught	6.50%	21	323
22	Renault	6.47%	15	232
23	Simca	6.45%	2	31
24	Maserati	5.89%	82	1393
25	Brabham	5.42%	69	1274
26	Wolf	5.36%	3	56
27	Tyrrell	5.34%	31	580
28	Eagle	5.26%	2	38
29	ERA	5.24%	12	229
30	Cisitalia	5.08%	6	118
31	Ford	4.76%	1	21
32	Talbot-Lago	4.52%	19	420
33	AFM	4.26%	2	47
34	Cooper	4.18%	66	1579
35	Honda	4.17%	2	48
36	BRM	3.76%	30	797
37	Gordini	3.60%	8	222
38	Penske	3.39%	2	59
39	BRP	3.23%	1	31
40	Porsche	3.18%	5	157
41	OSCA	2.78%	1	36
42	Kuzma	2.70%	1	37
43	Kurtis Kraft	2.58%	5	194
44	Ligier	2.42%	8	331
45	Veritas	2.25%	2	89
46	MG	2.17%	1	46
47	March	2.10%	14	667
48	LDS	2.00%	3	150
49	Lola	1.94%	9	463
50	Hesketh	1.85%	2	108
50	Frazer-Nash	1.85%	1	54
52	Bugatti	1.79%	1	56
53	Surtees	1.64%	8	488
54	Delahaye	1.53%	2	131
55	Benetton	1.43%	1	70
56	HWM	1.12%	2	179
57	Shadow	0.76%	2	262
58	Chevron	0.66%	1	152

Finishing position: