13th Place Finish Ratio

until 1995 Brazilian 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	13th Place Finish Ratio	13th Place Finishes	Entries
1	HW	100.00%	1	1
2	Morand-Chevrolet	25.00%	1	4
3	RRA	20.00%	1	5
4	Mugen-Honda	6.12%	6	98
5	Francis	5.88%	2	34
6	Yamaha	3.70%	6	162
7	Porsche	3.24%	6	185
8	Borgward	3.12%	1	32
9	Offenhauser	2.84%	10	352
10	Aston Martin	2.78%	1	36
11	Ilmor	2.50%	4	160
12	Talbot	2.44%	2	82
13	Hart	2.42%	7	289
14	Chevrolet	2.21%	10	453
15	ERA	2.20%	5	227
16	Megatron	2.13%	2	94
17	MG	2.04%	1	49
18	Zakspeed	1.92%	2	104
19	Ford	1.91%	123	6454
20	Riley	1.85%	1	54
21	Bugatti	1.82%	1	55
22	Judd	1.49%	6	403
23	Cosworth	1.42%	13	915
24	BRM	1.40%	16	1139
25	Delage	1.39%	1	72
26	Climax	1.38%	29	2100
27	Bristol	1.32%	4	303
28	Alfa Romeo	1.27%	10	786
29	BMW	1.16%	6	518
30	Veritas	1.15%	1	87
31	Honda	1.13%	5	441
32	Talbot-Lago	0.88%	3	339
33	Lea-Francis	0.83%	1	120
34	Lamborghini	0.78%	2	256
35	Ferrari	0.78%	15	1922
36	Alta	0.78%	3	387
37	Renault	0.77%	6	782
38	Connaught	0.72%	1	138
39	Matra	0.54%	1	185
40	Gordini	0.43%	1	232
41	Maserati	0.42%	7	1658

Finishing position: