Retirement Ratio

until 1953 Indianapolis 500

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
	Paul Greifzu	100.00%	1	1
4	David Hodkin	71.43%	5	7
5	Arialdo Ruggieri	68.75%	11	16
6	Ernst Loof	61.54%	32	52
7	Peter Berthon	50.00%	2	4
8	Alberto Massimino	49.33%	37	75
9	Amédée Gordini	49.32%	109	221
10	Bill Aston	43.75%	7	16
11	Ernesto Maserati	43.32%	120	277
12	Alf Francis	42.86%	12	28
12	John Heath	42.86%	12	28
14	Dante Giacosa	40.18%	45	112
15	Vittorio Bellentani	40.00%	16	40
15	Alex von Falkenhausen	40.00%	2	5
17	H J Adlington	38.46%	5	13
18	Geoffrey Taylor	36.84%	21	57
19	Antonio Lago	36.55%	106	290
19	Carlo Marchetti	36.55%	106	290
21	Reid Railton	36.36%	76	209
22	Ferdinand Porsche	29.41%	5	17
23	Owen Maddock	28.68%	37	129
24	Aurelio Lampredi	27.16%	63	232
25	Bindo Maserati	23.08%	3	13
25	Ettore Maserati	23.08%	3	13
27	Gioacchino Colombo	21.11%	42	199
28	Mike Oliver	16.67%	10	60
	Rodney Clarke	16.67%	10	60
	Rudolf Krause	16.67%	1	6

Finishing position: