Retirement Ratio

1978 Canadian GP
1979 United States GP

until 1978 United States GP

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

Finishing position:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 ret dsq dpts cpts

Pos	Engine Manufacturer	Retirement Ratio	Retirements	Entries
1	Emeryson	100.00%	3	3
	Cummins	100.00%	2	2
	Platè	100.00%	2	2
	Studebaker	100.00%	2	2
	Ardun	100.00%	1	1
	ATS	100.00%	1	1
	Ausper	100.00%	1	1
	CTA	100.00%	1	1
	Dodge	100.00%	1	1
	Eclipse	100.00%	1	1
	Falconer & Dunn-Ford	100.00%	1	1
	Giaur	100.00%	1	1
	GK	100.00%	1	1
	Guyot	100.00%	1	1
	Jicey	100.00%	1	1
	Lombard	100.00%	1	1
	Lucas-Chevrolet	100.00%	1	1
	MacKay	100.00%	1	1
	Orley	100.00%	1	1
	Patterson	100.00%	1	1
	Pozzoli	100.00%	1	1
	PS	100.00%	1	1
	Ricardian	100.00%	1	1
	Stanguellini	100.00%	1	1
	Summer	100.00%	1	1
	Vega	100.00%	1	1
	Vitesse	100.00%	1	1
28	AFM	87.50%	7	8
29	ATS (Ita)	84.62%	11	13
30	Renault	78.57%	11	14
31	Weslake	76.00%	19	25
32	Hudson	75.00%	3	4
33	Pratt & Whitney	66.67%	4	6
33	Corvette	66.67%	2	3
35	Francis	61.76%	21	34
36	Salmson	60.00%	9	15
	Tecno	60.00%	9	15
	Novi	60.00%	6	10
	Singer	60.00%	3	5
40	Citroën	58.82%	10	17
41	Vanwall	56.67%	51	90
42	Honda	56.25%	27	48
43	Milano	55.56%	5	9
44	Veritas	55.17%	48	87
45	Scarab	54.55%	6	11
46	Offenhauser	53.12%	187	352
47	Lancia	51.43%	18	35
48	Talbot	50.00%	41	82
	Jaguar	50.00%	9	18
	Plate	50.00%	4	8
	Steyr	50.00%	2	4
	Allard	50.00%	1	2
	BNC	50.00%	1	2
	de Coucy	50.00%	1	2
	Monaci	50.00%	1	2
56	Simca-Gordini	49.70%	83	167
57	Gordini	49.14%	114	232
58	Bugatti	49.09%	27	55
59	Fiat	47.37%	9	19
60	Lotus	44.83%	39	87
61	BRM	44.01%	500	1136
62	JAP	43.90%	18	41
63	Cisitalia	42.74%	50	117
64	Maserati	42.70%	708	1658
65	MG	40.82%	20	49
66	Kuchen	40.00%	4	10
66	Castellotti	40.00%	2	5
68	Alta	38.76%	150	387
69	Ford	38.52%	1256	3261
70	BDA	37.50%	6	16
70	Kollektiv	37.50%	3	8
72	ERA	37.00%	84	227
73	Butterworth	36.84%	7	19
74	Amilcar	36.00%	9	25
75	BMW	35.71%	65	182
76	Repco	35.36%	64	181
77	Alfa Romeo	35.31%	155	439
78	Riley	35.19%	19	54
79	Borgward	34.38%	11	32
80	Frazer-Nash	34.04%	16	47
81	Matra	33.62%	39	116
82	Aston Martin	33.33%	12	36
	Austin	33.33%	1	3
	BMC	33.33%	1	3
	Buick	33.33%	1	3
	Cadillac	33.33%	1	3
	Rapier	33.33%	1	3
	Speluzzi	33.33%	1	3
89	Climax	33.14%	696	2100
90	Mercedes	32.56%	14	43
91	Delage	31.94%	23	72
92	Ferrari	31.61%	415	1313
93	Talbot-Lago	31.27%	106	339
94	Chevrolet	30.77%	132	429
95	DB	30.00%	3	10
96	Simca	29.41%	10	34
97	FVC	29.25%	31	106
98	OSCA	26.79%	15	56
99	Rover	26.67%	4	15
100	Bristol	25.41%	77	303
101	Cosworth	25.32%	196	774
102	Alvis	25.00%	1	4
	Lagonda	25.00%	1	4
	Lycoming	25.00%	1	4
	Martin	25.00%	1	4
106	Lea-Francis	24.17%	29	120
107	Delahaye	22.90%	30	131
108	Connaught	21.01%	29	138
109	Peugeot	20.69%	6	29
110	Smith-Chevrolet	20.00%	1	5
111	Porsche	16.76%	29	173
112	Panhard	16.67%	1	6
112	Vincent	16.67%	1	6

Finishing position:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 ret dsq dpts cpts