Retirement Ratio

until 1963 ACF 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	Claude Hill	100.00%	2	2
	Bernd Nacke	100.00%	1	1
	Doug Serrurier	100.00%	1	1
	Frank Kurtis	100.00%	1	1
	Marcel Balsa	100.00%	1	1
	Walter Gerstenberg	100.00%	1	1
7	Frank Costin	84.62%	11	13
8	David Hodkin	71.43%	5	7
9	Arialdo Ruggieri	68.75%	11	16
10	Fred Wilkinson	66.67%	4	6
11	Eric Broadley	65.22%	15	23
12	Ernst Loof	57.83%	48	83
13	Alex von Falkenhausen	55.56%	5	9
14	Alf Francis	52.08%	25	48
14	John Heath	52.08%	25	48
16	Peter Berthon	51.56%	33	64
17	Mauro Forghieri	50.00%	4	8
17	Hans Klenk	50.00%	1	2
19	Amédée Gordini	49.74%	192	386
20	Ted Cutting	46.67%	7	15
21	Alberto Massimino	45.70%	69	151
22	Ernesto Maserati	42.52%	125	294
23	Bill Aston	41.18%	7	17
24	Paul Greifzu	40.00%	2	5
25	Dante Giacosa	39.82%	45	113
26	Vittorio Bellentani	39.77%	247	621
27	Tony Rudd	38.68%	41	106
28	Colin Chapman	36.50%	246	674
29	Reid Railton	36.36%	76	209
30	Antonio Lago	36.24%	108	298
30	Carlo Marchetti	36.24%	108	298
32	H J Adlington	35.71%	5	14
33	Vittorio Jano	35.50%	93	262
34	Geoffrey Taylor	35.00%	21	60
35	Gioacchino Colombo	34.30%	249	726
36	Hans Gassmann	33.33%	14	42
	Hans Scherrenberg	33.33%	14	42
	Ludwig Krause	33.33%	14	42
	Len Terry	33.33%	1	3
	Tony Robinson	33.33%	1	3
41	Mike Oliver	33.21%	87	262
41	Rodney Clarke	33.21%	87	262
43	Owen Maddock	32.74%	331	1011
44	Carlo Chiti	29.88%	49	164
45	Aurelio Lampredi	29.71%	131	441
46	Ferdinand Porsche	29.41%	5	17
47	Bindo Maserati	27.59%	8	29
	Ettore Maserati	27.59%	8	29
	Paul Emery	27.59%	8	29
50	Ron Tauranac	26.67%	4	15
51	Jack Brabham	25.00%	1	4
52	Valerio Colotti	20.00%	1	5
53	Helmut Bott	13.27%	13	98
54	Wilhelm Hild	12.93%	15	116
55	Rudolf Krause	12.50%	1	8
56	Hans Mezger	10.98%	9	82

Finishing position: