Retirement Ratio

until 1953 Belgian 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	Designer	Retirement Ratio	Retirements	Entries
1	Bernd Nacke	100.00%	1	1
1	Marcel Balsa	100.00%	1	1
3	David Hodkin	71.43%	5	7
4	Arialdo Ruggieri	68.75%	11	16
5	Ernst Loof	61.67%	37	60
6	Alberto Massimino	50.00%	39	78
	Peter Berthon	50.00%	2	4
	Paul Greifzu	50.00%	1	2
9	Amédée Gordini	48.29%	113	234
10	Alf Francis	45.45%	15	33
10	John Heath	45.45%	15	33
12	Bill Aston	43.75%	7	16
13	Ernesto Maserati	43.53%	121	278
14	Vittorio Bellentani	41.86%	18	43
15	Alex von Falkenhausen	40.00%	2	5
16	Dante Giacosa	39.82%	45	113
17	H J Adlington	38.46%	5	13
18	Geoffrey Taylor	36.84%	21	57
19	Antonio Lago	36.64%	107	292
19	Carlo Marchetti	36.64%	107	292
21	Reid Railton	36.36%	76	209
22	Ferdinand Porsche	29.41%	5	17
23	Owen Maddock	29.32%	39	133
24	Bindo Maserati	28.57%	4	14
24	Ettore Maserati	28.57%	4	14
26	Aurelio Lampredi	26.40%	66	250
27	Gioacchino Colombo	21.11%	42	199
28	Mike Oliver	19.40%	13	67
28	Rodney Clarke	19.40%	13	67
30	Rudolf Krause	14.29%	1	7

Finishing position: