Retirement Ratio

until 1973 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:

Pos	Sponsor	Retirement Ratio	Retirements	Entries
1	Lucky Strike	83.33%	5	6
2	Castrol	81.82%	9	11
2	Ward	81.82%	9	11
4	Harvey Titanium	75.00%	6	8
5	LEC	60.00%	3	5
6	Martini	54.55%	24	44
7	Pagnossin	54.17%	13	24
8	Duckhams	52.38%	11	21
8	Motorcraft	52.38%	11	21
10	Brooke Bond Oxo	50.77%	33	65
11	Marlboro	50.40%	63	125
12	Motul	50.00%	18	36
	Politoys	50.00%	18	36
	Capricorn	50.00%	1	2
	Flame Out	50.00%	1	2
16	Dunlop	49.51%	51	103
17	BP	49.00%	49	100
18	Embassy	48.15%	13	27
18	UOP	48.15%	13	27
20	Lockheed	47.44%	37	78
21	Champion	47.06%	80	170
22	Esso	46.81%	44	94
23	Argentine Meat	46.77%	29	62
	Bardahl	46.77%	29	62
	YPF	46.77%	29	62
26	Firestone	46.77%	123	263
27	Ferodo	46.38%	64	138
28	STP	45.45%	70	154
28	Gulf	45.45%	20	44
30	Gold Leaf	45.28%	48	106
31	Fina	44.12%	15	34
32	Visit Argentina	43.75%	14	32
33	Iso	43.33%	13	30
34	GKN	43.21%	35	81
35	Heuer	42.67%	32	75
36	Eifelland Caravans	42.50%	17	40
37	Shell	42.07%	114	271
38	Reynolds Aluminium	40.00%	14	35
39	Ford	37.12%	85	229
40	John Player Special	33.96%	18	53
40	Texaco	33.96%	18	53
42	Fiat	33.33%	10	30
43	Goodyear	33.11%	98	296
44	Elf	32.86%	69	210
45	Girling	32.14%	9	28
46	Yardley	30.60%	41	134
47	Magneti Marelli	29.55%	13	44
48	Auto Motor und Sport	29.17%	7	24
49	Autolite	28.36%	19	67
50	Agip	26.32%	5	19

Finishing position: