10th Place Finish Ratio

until 2009 Italian 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	5.64%	25	443
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	MG	4.08%	2	49
26	Amilcar	4.00%	1	25
26	Weslake	4.00%	1	25
28	Chevrolet	3.97%	18	453
29	Renault	3.70%	51	1380
30	Bugatti	3.64%	2	55
31	Ford	3.37%	233	6904
32	Cosworth	3.30%	46	1393
33	Judd	3.23%	13	403
34	Alfa Romeo	3.18%	25	786
35	Lamborghini	3.12%	8	256
35	Mecachrome	3.12%	1	32
37	Hart	3.10%	12	387
38	Supertec	3.06%	3	98
39	Delahaye	3.05%	4	131
40	BMW	3.03%	26	858
41	European	2.94%	1	34
42	Honda	2.90%	26	897
43	Climax	2.62%	55	2100
44	Alta	2.58%	10	387
45	Offenhauser	2.56%	9	352
46	Lea-Francis	2.50%	3	120
47	Maserati	2.47%	41	1658
48	JAP	2.44%	1	41
49	Talbot-Lago	2.36%	8	339
50	Peugeot	2.32%	6	259
51	BRM	2.28%	26	1139
52	Vanwall	2.22%	2	90
53	Mercedes	2.06%	13	630
54	Bristol	1.98%	6	303
55	Zakspeed	1.92%	2	104
56	Riley	1.85%	1	54
57	Simca-Gordini	1.80%	3	167
58	OSCA	1.79%	1	56
59	Gordini	1.72%	4	232
60	Repco	1.66%	3	181
61	Matra	1.62%	3	185
62	Ferrari	1.56%	41	2626
63	Lotus	1.15%	1	87
63	Veritas	1.15%	1	87
65	ERA	0.88%	2	227
66	Ilmor	0.62%	1	160

Finishing position: