Retirement Ratio

1984 South African GP
1985 Brazilian GP

until 1984 Brazilian 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	Weslake	76.00%	19	25
31	Hudson	75.00%	3	4
32	TAG	66.67%	6	9
	Pratt & Whitney	66.67%	4	6
	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	Renault	57.87%	114	197
42	Vanwall	56.67%	51	90
43	Honda	55.93%	33	59
44	Milano	55.56%	5	9
45	Veritas	55.17%	48	87
46	Scarab	54.55%	6	11
47	Offenhauser	53.12%	187	352
48	Lancia	51.43%	18	35
49	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
57	Simca-Gordini	49.70%	83	167
58	Gordini	49.14%	114	232
59	Bugatti	49.09%	27	55
60	Fiat	47.37%	9	19
61	Lotus	44.83%	39	87
62	JAP	43.90%	18	41
63	BRM	43.90%	500	1139
64	Matra	43.78%	81	185
65	Alfa Romeo	43.44%	275	633
66	Cisitalia	42.74%	50	117
67	Maserati	42.70%	708	1658
68	BMW	41.70%	108	259
69	Hart	41.49%	39	94
70	MG	40.82%	20	49
71	Kuchen	40.00%	4	10
71	Castellotti	40.00%	2	5
73	Alta	38.76%	150	387
74	Ford	38.48%	1869	4857
75	BDA	37.50%	6	16
75	Kollektiv	37.50%	3	8
77	ERA	37.00%	84	227
78	Butterworth	36.84%	7	19
79	Amilcar	36.00%	9	25
80	Repco	35.36%	64	181
81	Riley	35.19%	19	54
82	Borgward	34.38%	11	32
83	Frazer-Nash	34.04%	16	47
84	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
91	Climax	33.14%	696	2100
92	Mercedes	32.56%	14	43
93	Delage	31.94%	23	72
94	Ferrari	31.49%	466	1480
95	Talbot-Lago	31.27%	106	339
96	Chevrolet	31.13%	141	453
97	DB	30.00%	3	10
98	Simca	29.41%	10	34
99	FVC	29.25%	31	106
100	Cosworth	27.10%	248	915
101	OSCA	26.79%	15	56
102	Rover	26.67%	4	15
103	Bristol	25.41%	77	303
104	Alvis	25.00%	1	4
	Lagonda	25.00%	1	4
	Lycoming	25.00%	1	4
	Martin	25.00%	1	4
108	Lea-Francis	24.17%	29	120
109	Delahaye	22.90%	30	131
110	Connaught	21.01%	29	138
111	Peugeot	20.69%	6	29
112	Smith-Chevrolet	20.00%	1	5
113	Porsche	16.76%	29	173
114	Panhard	16.67%	1	6
114	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