10th Place Finish Ratio

until 2019 Belgian 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	BWT Mercedes	7.69%	2	26
14	Rover	6.67%	1	15
15	Megatron	6.38%	6	94
16	BDA	6.25%	1	16
17	Mugen-Honda	6.12%	18	294
17	Playlife	6.12%	6	98
19	Fondmetal	5.88%	2	34
19	Simca	5.88%	2	34
21	Toyota	5.45%	25	459
22	Talbot	4.88%	4	82
23	Porsche	4.86%	9	185
24	Yamaha	4.62%	12	260
25	Connaught	4.35%	6	138
26	Mercedes	4.24%	80	1886
27	MG	4.08%	2	49
28	Amilcar	4.00%	1	25
28	Weslake	4.00%	1	25
30	Chevrolet	3.97%	18	453
31	Renault	3.74%	89	2380
32	Honda	3.69%	41	1111
33	Bugatti	3.64%	2	55
34	Ford	3.37%	233	6904
35	Judd	3.23%	13	403
36	Alfa Romeo	3.18%	25	786
37	Lamborghini	3.12%	8	256
37	Mecachrome	3.12%	1	32
39	BMW	3.12%	27	866
40	Hart	3.10%	12	387
41	Supertec	3.06%	3	98
42	Delahaye	3.05%	4	131
43	Cosworth	3.04%	54	1777
44	European	2.94%	1	34
45	Ferrari	2.70%	103	3818
46	Climax	2.62%	55	2100
47	Alta	2.58%	10	387
48	Offenhauser	2.56%	9	352
49	Lea-Francis	2.50%	3	120
50	Maserati	2.47%	41	1658
51	JAP	2.44%	1	41
52	Talbot-Lago	2.36%	8	339
53	Peugeot	2.32%	6	259
54	BRM	2.28%	26	1139
55	Vanwall	2.22%	2	90
56	Bristol	1.98%	6	303
57	Zakspeed	1.92%	2	104
58	Riley	1.85%	1	54
59	Simca-Gordini	1.80%	3	167
60	OSCA	1.79%	1	56
61	Gordini	1.72%	4	232
62	Repco	1.66%	3	181
63	Matra	1.62%	3	185
64	Lotus	1.15%	1	87
64	Veritas	1.15%	1	87
66	ERA	0.88%	2	227
67	TAG-Heuer	0.81%	1	124
68	Ilmor	0.62%	1	160

Finishing position: