13th Place Finish Ratio

until 1974 Brazilian GP

Include 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	3.12%	10	321
9	Aston Martin	2.78%	1	36
10	Talbot	2.44%	2	82
11	ERA	2.20%	5	227
12	MG	2.04%	1	49
13	Riley	1.85%	1	54
14	Bugatti	1.82%	1	55
15	Alfa Romeo	1.41%	5	354
16	BRM	1.40%	15	1075
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	Ford	1.28%	21	1639
22	Veritas	1.15%	1	87
23	Cosworth	1.02%	4	391
24	Talbot-Lago	0.88%	3	339
25	Lea-Francis	0.83%	1	120
26	Alta	0.78%	3	387
27	Connaught	0.72%	1	138
28	Ferrari	0.60%	7	1171
29	BMW	0.57%	1	176
30	Gordini	0.43%	1	232
31	Maserati	0.42%	7	1658

Finishing position: