13th Place Finish Ratio

until 1973 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	Francis	5.88%	2	34
5	Honda	4.17%	2	48
6	Porsche	3.47%	6	173
7	Borgward	3.12%	1	32
8	Chevrolet	3.07%	8	261
9	Offenhauser	2.84%	10	352
10	Aston Martin	2.78%	1	36
11	Talbot	2.44%	2	82
12	ERA	2.20%	5	227
13	MG	2.04%	1	49
14	Riley	1.85%	1	54
15	Bugatti	1.82%	1	55
16	Alfa Romeo	1.41%	5	354
17	Delage	1.39%	1	72
17	Matra	1.39%	1	72
19	Climax	1.38%	29	2100
20	Bristol	1.32%	4	303
21	BRM	1.27%	13	1024
22	Cosworth	1.19%	4	337
23	Veritas	1.15%	1	87
24	Ford	1.09%	14	1287
25	Talbot-Lago	0.88%	3	339
26	Lea-Francis	0.83%	1	120
27	Alta	0.78%	3	387
28	Connaught	0.72%	1	138
29	Ferrari	0.61%	7	1153
30	BMW	0.57%	1	176
31	Gordini	0.43%	1	232
32	Maserati	0.42%	7	1658

Finishing position: