13th Place Finish Ratio

until 1977 United States 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	Francis	5.88%	2	34
5	Honda	4.17%	2	48
6	Porsche	3.47%	6	173
7	Renault	3.33%	1	30
8	Borgward	3.12%	1	32
9	Offenhauser	2.84%	10	352
10	Aston Martin	2.78%	1	36
11	Talbot	2.44%	2	82
12	Chevrolet	2.25%	10	444
13	ERA	2.20%	5	227
14	MG	2.04%	1	49
15	Riley	1.85%	1	54
16	Bugatti	1.82%	1	55
17	Ford	1.76%	62	3527
18	Cosworth	1.57%	13	830
19	BRM	1.40%	16	1139
20	Delage	1.39%	1	72
21	Climax	1.38%	29	2100
22	Bristol	1.32%	4	303
23	Alfa Romeo	1.29%	6	466
24	Veritas	1.15%	1	87
25	Talbot-Lago	0.88%	3	339
26	Lea-Francis	0.83%	1	120
27	Matra	0.82%	1	122
28	Alta	0.78%	3	387
29	Connaught	0.72%	1	138
30	Ferrari	0.60%	8	1338
31	BMW	0.54%	1	184
32	Gordini	0.43%	1	232
33	Maserati	0.42%	7	1658

Finishing position: