10th Place Finish Ratio

until 2018 Russian 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	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	Novi	10.00%	1	10
11	Scarab	9.09%	1	11
12	Petronas	8.82%	27	306
13	Rover	6.67%	1	15
14	Megatron	6.38%	6	94
15	BDA	6.25%	1	16
16	Mugen-Honda	6.12%	18	294
16	Playlife	6.12%	6	98
18	Fondmetal	5.88%	2	34
18	Simca	5.88%	2	34
20	Toyota	5.45%	25	459
21	Talbot	4.88%	4	82
22	Porsche	4.86%	9	185
23	Yamaha	4.62%	12	260
24	Connaught	4.35%	6	138
25	Mercedes	4.32%	78	1804
26	MG	4.08%	2	49
27	Amilcar	4.00%	1	25
27	Weslake	4.00%	1	25
29	Chevrolet	3.97%	18	453
30	Renault	3.77%	87	2308
31	Bugatti	3.64%	2	55
32	Ford	3.37%	233	6904
33	Honda	3.34%	35	1049
34	Judd	3.23%	13	403
35	Alfa Romeo	3.18%	25	786
36	Lamborghini	3.12%	8	256
36	Mecachrome	3.12%	1	32
38	BMW	3.12%	27	866
39	Hart	3.10%	12	387
40	Supertec	3.06%	3	98
41	Delahaye	3.05%	4	131
42	Cosworth	3.04%	54	1777
43	European	2.94%	1	34
44	Climax	2.62%	55	2100
45	Ferrari	2.61%	97	3710
46	Alta	2.58%	10	387
47	Offenhauser	2.56%	9	352
48	Lea-Francis	2.50%	3	120
49	Maserati	2.47%	41	1658
50	JAP	2.44%	1	41
51	Talbot-Lago	2.36%	8	339
52	Peugeot	2.32%	6	259
53	BRM	2.28%	26	1139
54	Vanwall	2.22%	2	90
55	Bristol	1.98%	6	303
56	Zakspeed	1.92%	2	104
57	Riley	1.85%	1	54
58	Simca-Gordini	1.80%	3	167
59	OSCA	1.79%	1	56
60	Gordini	1.72%	4	232
61	Repco	1.66%	3	181
62	Matra	1.62%	3	185
63	Lotus	1.15%	1	87
63	Veritas	1.15%	1	87
65	ERA	0.88%	2	227
66	TAG-Heuer	0.88%	1	114
67	Ilmor	0.62%	1	160

Finishing position: