Retirement Ratio

until 1975 British 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	Sponsor	Retirement Ratio	Retirements	Entries
1	Castrol	81.82%	9	11
1	Ward	81.82%	9	11
3	Harvey Titanium	75.00%	6	8
4	Lucky Strike	62.50%	5	8
5	LEC	60.00%	3	5
6	Bang & Olufsen	58.82%	10	17
7	Personal	57.14%	28	49
8	Warsteiner	56.25%	9	16
9	Ambrozium	54.55%	12	22
9	Lavazza	54.55%	6	11
11	Pagnossin	54.17%	13	24
12	UOP	53.85%	42	78
13	Motul	52.63%	40	76
14	Motorcraft	52.38%	11	21
15	Beta	51.28%	20	39
16	Iso	50.88%	29	57
17	Brooke Bond Oxo	50.77%	33	65
18	Politoys	50.00%	18	36
	Capricorn	50.00%	1	2
	Flame Out	50.00%	1	2
	Sunoco	50.00%	1	2
22	Dunlop	49.51%	51	103
23	BP	49.00%	49	100
24	Valvoline	48.48%	16	33
25	Lockheed	47.44%	37	78
26	Esso	46.81%	44	94
27	Argentine Meat	46.77%	29	62
	Bardahl	46.77%	29	62
	YPF	46.77%	29	62
30	Firestone	46.71%	149	319
31	Marlboro	46.70%	106	227
32	Polar	46.15%	6	13
33	Ferodo	45.89%	67	146
34	STP	45.45%	70	154
34	Gulf	45.45%	20	44
36	Gold Leaf	45.28%	48	106
37	Visit Argentina	43.75%	14	32
38	GKN	43.21%	35	81
39	First National City	42.86%	6	14
40	Duckhams	42.50%	34	80
40	Eifelland Caravans	42.50%	17	40
42	Fina	42.18%	62	147
43	Shell	42.12%	115	273
44	Champion	40.89%	166	406
45	Martini	40.62%	39	96
46	Reynolds Aluminium	40.00%	14	35
47	Homelite	37.50%	3	8
47	Suzuki	37.50%	3	8
49	John Player Special	37.27%	41	110
50	Koni	36.67%	11	30
51	Copersucar	36.36%	4	11
52	Ford	35.91%	93	259
53	Embassy	33.77%	26	77
54	Heuer	33.66%	68	202
55	Goodyear	33.54%	214	638
56	Fiat	33.33%	10	30
57	Elan	32.26%	10	31
57	Stroh	32.26%	10	31
59	Girling	32.14%	9	28
60	Elf	31.18%	82	263
61	Texaco	31.13%	33	106
62	Yardley	29.53%	44	149
63	Magneti Marelli	29.47%	28	95
64	Schmitthelm	29.41%	15	51
64	SKF	29.41%	15	51
66	Auto Motor und Sport	29.17%	7	24
66	Matchbox	29.17%	7	24
68	Agip	28.57%	20	70
69	Autolite	28.36%	19	67
70	Dempster	25.00%	3	12
	Viceroy	25.00%	3	12
	Pinch	25.00%	1	4
73	Arexons	19.05%	4	21
74	HB Alarmsystemen	14.29%	1	7

Finishing position: