Disqualification Ratio

until 1983 South African 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	Disqualification Ratio	Disqualifications	Entries
1	Giocomo Caliri	10.00%	1	10
2	Bindo Maserati	6.90%	2	29
2	Ettore Maserati	6.90%	2	29
4	Morris Nunn	6.06%	2	33
5	John Barnard	3.57%	3	84
6	Antonio Tomaini	3.33%	1	30
7	Gustav Brunner	2.94%	1	34
8	Herve Guilpin	2.27%	1	44
9	Geoff Ferris	1.80%	4	222
10	Dave Baldwin	1.65%	2	121
11	Tim Wadrop	1.59%	1	63
12	Peter Berthon	1.56%	1	64
13	Brian Lisles	1.37%	1	73
14	Eddie Strait	1.25%	1	80
15	Neil Oatley	1.08%	2	185
15	Patrick Head	1.08%	2	185
17	Frank Costin	1.04%	1	96
18	Frank Dernie	1.03%	2	195
19	Len Terry	1.01%	2	198
20	Maurice Philippe	1.01%	6	596
21	Aurelio Lampredi	0.91%	4	441
22	Ron Tauranac	0.89%	6	672
23	Dante Giacosa	0.88%	1	113
23	Peter Connew	0.88%	1	113
25	John Surtees	0.86%	3	347
26	Shahab Ahmed	0.83%	1	121
27	John Baldwin	0.79%	1	126
28	John Gentry	0.74%	1	135
29	Ken Sears	0.72%	1	139
30	Martin Ogilvie	0.69%	2	288
31	Mauro Forghieri	0.69%	4	578
32	Ernesto Maserati	0.68%	2	294
33	Alberto Massimino	0.65%	1	153
33	David North	0.65%	1	153
35	Colin Chapman	0.65%	12	1848
36	Gordon Coppuck	0.61%	3	493
37	Dave Wass	0.53%	2	376
38	Am�d�e Gordini	0.52%	2	386
39	Gordon Murray	0.50%	2	400
40	Tony Southgate	0.45%	3	671
41	Robin Herd	0.42%	3	715
42	Harvey Postlethwaite	0.35%	1	285
43	Peter Wright	0.34%	1	296
44	Vittorio Bellentani	0.32%	2	621
45	Ralph Bellamy	0.27%	1	369
46	Owen Maddock	0.18%	2	1106
47	Gioacchino Colombo	0.14%	1	726

Finishing position: