Retirement Ratio

until 1955 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
	Marcel Balsa	100.00%	1	1
	Walter Gerstenberg	100.00%	1	1
4	David Hodkin	71.43%	5	7
5	Arialdo Ruggieri	68.75%	11	16
6	Ernst Loof	57.83%	48	83
7	Alex von Falkenhausen	55.56%	5	9
8	Alf Francis	52.08%	25	48
8	John Heath	52.08%	25	48
10	Peter Berthon	50.00%	2	4
10	Hans Klenk	50.00%	1	2
12	Amédée Gordini	49.42%	171	346
13	Alberto Massimino	48.80%	61	125
14	Vittorio Jano	44.44%	8	18
15	Ernesto Maserati	42.96%	125	291
16	Vittorio Bellentani	42.04%	95	226
17	Bill Aston	41.18%	7	17
18	Paul Greifzu	40.00%	2	5
19	Dante Giacosa	39.82%	45	113
20	Antonio Lago	36.49%	108	296
20	Carlo Marchetti	36.49%	108	296
22	Reid Railton	36.36%	76	209
23	H J Adlington	35.71%	5	14
24	Hans Gassmann	35.48%	11	31
	Hans Scherrenberg	35.48%	11	31
	Ludwig Krause	35.48%	11	31
27	Geoffrey Taylor	35.00%	21	60
28	Mike Oliver	32.08%	51	159
28	Rodney Clarke	32.08%	51	159
30	Owen Maddock	30.70%	66	215
31	Bindo Maserati	29.63%	8	27
31	Ettore Maserati	29.63%	8	27
33	Ferdinand Porsche	29.41%	5	17
34	Gioacchino Colombo	29.17%	98	336
35	Aurelio Lampredi	28.78%	118	410
36	Rudolf Krause	12.50%	1	8

Finishing position: