13th Place Finish Ratio

until 1988 Japanese 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	Porsche	3.47%	6	173
6	Borgward	3.12%	1	32
7	Aston Martin	2.78%	1	36
8	Talbot	2.44%	2	82
9	Judd	2.22%	2	90
10	Chevrolet	2.21%	10	453
11	ERA	2.20%	5	227
12	Megatron	2.17%	2	92
13	MG	2.04%	1	49
14	Zakspeed	1.96%	2	102
15	Ford	1.88%	99	5261
16	Riley	1.85%	1	54
17	Bugatti	1.82%	1	55
18	Hart	1.79%	4	223
19	Cosworth	1.42%	13	915
20	BRM	1.40%	16	1139
21	Delage	1.39%	1	72
22	Climax	1.38%	29	2100
23	Bristol	1.32%	4	303
24	Alfa Romeo	1.27%	10	786
25	BMW	1.16%	6	518
26	Veritas	1.15%	1	87
27	Honda	1.08%	3	277
28	Talbot-Lago	0.88%	3	339
29	Lea-Francis	0.83%	1	120
30	Alta	0.78%	3	387
31	Connaught	0.72%	1	138
32	Ferrari	0.67%	11	1635
33	Renault	0.61%	3	491
34	Matra	0.54%	1	185
35	Gordini	0.43%	1	232
36	Maserati	0.42%	7	1658

Finishing position: