18th Place Finish Ratio

until 1984 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	18th Place Finish Ratio	18th Place Finishes	Entries
1	National Organs	100.00%	1	1
2	ABMTM	9.09%	1	11
	Apollon	9.09%	1	11
	Belle Vue	9.09%	1	11
5	Samson	6.25%	1	16
6	Lavazza	4.55%	1	22
7	BAF	3.85%	1	26
8	F&S Properties	3.45%	1	29
9	HB Alarmsystemen	2.78%	1	36
10	UOP	1.67%	2	120
11	Brooke Bond Oxo	1.54%	1	65
12	Motul	1.32%	1	76
13	Olivetti	1.30%	1	77
14	Copersucar	1.15%	1	87
15	Pininfarina	1.11%	1	90
16	Tabatip	1.01%	1	99
17	First National City	0.87%	1	115
18	Texaco	0.80%	2	249
19	Fiat	0.76%	2	264
20	Yardley	0.67%	1	149
21	Beta	0.66%	1	152
22	Firestone	0.63%	2	319
23	Brembo	0.61%	1	163
24	Longines	0.56%	1	180
25	Saudia	0.51%	1	196
26	Speedline	0.51%	1	198
27	Personal	0.50%	1	200
28	Arexons	0.50%	1	202
29	Agip	0.39%	2	514
30	Ferodo	0.38%	2	522
31	Valvoline	0.35%	2	571
32	John Player Special	0.32%	1	317
33	SKF	0.30%	1	336
34	Heuer	0.27%	1	368
35	Goodyear	0.17%	4	2344
36	Magneti Marelli	0.17%	1	588
37	Michelin	0.16%	1	624
38	Koni	0.14%	1	708
39	Champion	0.05%	1	1825

Finishing position: