10th Place Finish Ratio

until 2011 German GP

Include Indy 500 races
Ignore non-championship races
Note: records involving non-championship races may be inaccurate due to incomplete data.

Finishing position:

Pos	Engine Manufacturer	10th Place Finish Ratio	10th Place Finishes	Entries
1	Simca-Deho	100.00%	1	1
2	Speluzzi	33.33%	1	3
3	DB	20.00%	2	10
3	RRA	20.00%	1	5
5	Borgward	15.62%	5	32
6	Aston Martin	13.89%	5	36
7	Acer	11.76%	4	34
8	Fiat	10.53%	2	19
9	Asiatech	10.29%	7	68
10	Scarab	9.09%	1	11
11	Petronas	8.82%	27	306
12	Rover	6.67%	1	15
13	Megatron	6.38%	6	94
14	BDA	6.25%	1	16
15	Mugen-Honda	6.12%	18	294
15	Playlife	6.12%	6	98
17	Fondmetal	5.88%	2	34
17	Simca	5.88%	2	34
19	Toyota	5.45%	25	459
20	Talbot	4.88%	4	82
21	Porsche	4.86%	9	185
22	Yamaha	4.62%	12	260
23	Connaught	4.35%	6	138
24	MG	4.08%	2	49
25	Amilcar	4.00%	1	25
25	Weslake	4.00%	1	25
27	Chevrolet	3.97%	18	453
28	Bugatti	3.64%	2	55
29	Renault	3.59%	55	1532
30	Ford	3.37%	233	6904
31	Cosworth	3.30%	53	1605
32	Judd	3.23%	13	403
33	Alfa Romeo	3.18%	25	786
34	Lamborghini	3.12%	8	256
34	Mecachrome	3.12%	1	32
36	BMW	3.12%	27	866
37	Hart	3.10%	12	387
38	Supertec	3.06%	3	98
39	Delahaye	3.05%	4	131
40	European	2.94%	1	34
41	Honda	2.90%	26	897
42	Climax	2.62%	55	2100
43	Alta	2.58%	10	387
44	Lea-Francis	2.50%	3	120
45	Maserati	2.47%	41	1658
46	JAP	2.44%	1	41
47	Mercedes	2.42%	20	828
48	Talbot-Lago	2.36%	8	339
49	Peugeot	2.32%	6	259
50	BRM	2.28%	26	1139
51	Vanwall	2.22%	2	90
52	Bristol	1.98%	6	303
53	Ferrari	1.95%	55	2815
54	Zakspeed	1.92%	2	104
55	Riley	1.85%	1	54
56	Simca-Gordini	1.80%	3	167
57	OSCA	1.79%	1	56
58	Gordini	1.72%	4	232
59	Repco	1.66%	3	181
60	Matra	1.62%	3	185
61	Lotus	1.15%	1	87
61	Veritas	1.15%	1	87
63	ERA	0.88%	2	227
64	Ilmor	0.62%	1	160

Finishing position: