Retirement Ratio

until 1975 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:

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
3	Ambrozium	75.00%	3	4
5	Lucky Strike	71.43%	5	7
6	Valvoline	66.67%	4	6
7	Personal	61.29%	19	31
8	LEC	60.00%	3	5
9	Bang & Olufsen	58.82%	10	17
10	Warsteiner	56.25%	9	16
11	UOP	54.24%	32	59
12	Pagnossin	54.17%	13	24
13	Motul	52.63%	40	76
14	Motorcraft	52.38%	11	21
15	Iso	50.88%	29	57
16	Brooke Bond Oxo	50.77%	33	65
17	Politoys	50.00%	18	36
	First National City	50.00%	2	4
	Capricorn	50.00%	1	2
	Copersucar	50.00%	1	2
	Flame Out	50.00%	1	2
	Sunoco	50.00%	1	2
23	Dunlop	49.51%	51	103
24	BP	49.00%	49	100
25	Lockheed	47.44%	37	78
26	Marlboro	47.37%	90	190
26	Duckhams	47.37%	27	57
28	Beta	46.88%	15	32
29	Esso	46.81%	44	94
30	Argentine Meat	46.77%	29	62
	Bardahl	46.77%	29	62
	YPF	46.77%	29	62
33	Firestone	46.71%	149	319
34	Ferodo	45.89%	67	146
35	STP	45.45%	70	154
35	Gulf	45.45%	20	44
37	Gold Leaf	45.28%	48	106
38	Martini	44.30%	35	79
39	Fina	43.75%	49	112
39	Visit Argentina	43.75%	14	32
41	GKN	43.21%	35	81
42	Eifelland Caravans	42.50%	17	40
43	Shell	42.12%	115	273
44	Champion	40.70%	140	344
45	Reynolds Aluminium	40.00%	14	35
46	John Player Special	38.20%	34	89
47	Homelite	37.50%	3	8
47	Suzuki	37.50%	3	8
49	Koni	36.67%	11	30
50	Ford	35.91%	93	259
51	Embassy	35.00%	21	60
52	Heuer	34.59%	64	185
53	Goodyear	33.52%	175	522
54	Fiat	33.33%	10	30
55	Elf	32.38%	79	244
56	Schmitthelm	32.35%	11	34
56	SKF	32.35%	11	34
58	Elan	32.26%	10	31
58	Stroh	32.26%	10	31
60	Girling	32.14%	9	28
61	Magneti Marelli	30.77%	24	78
62	Agip	30.19%	16	53
63	Texaco	29.89%	26	87
64	Yardley	29.53%	44	149
65	Auto Motor und Sport	29.17%	7	24
66	Matchbox	28.57%	4	14
67	Autolite	28.36%	19	67
68	Dempster	25.00%	3	12
68	Viceroy	25.00%	1	4

Finishing position: