Retirements in a Season

until 1951 Spanish 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	Year	Retirements
1	Ernesto Maserati	1947	66
2	Dante Giacosa	1947	40
3	Antonio Lago	1951	38
3	Carlo Marchetti	1951	38
5	Antonio Lago	1950	36
5	Carlo Marchetti	1950	36
7	Ernesto Maserati	1946	29
8	Reid Railton	1947	27
9	Amédée Gordini	1951	24
10	Antonio Lago	1949	20
10	Carlo Marchetti	1949	20
12	Gioacchino Colombo	1950	17
12	Aurelio Lampredi	1951	17
14	Reid Railton	1948	15
15	Alberto Massimino	1950	13
15	Gioacchino Colombo	1951	13
17	Amédée Gordini	1947	12
18	Ernesto Maserati	1948	11
19	Reid Railton	1950	10
20	Reid Railton	1949	8
	Amédée Gordini	1950	8
	Reid Railton	1951	8
23	Alberto Massimino	1951	7
24	Amédée Gordini	1948	6
24	Arialdo Ruggieri	1950	6
26	Gioacchino Colombo	1946	5
	Reid Railton	1946	5
	Ernesto Maserati	1950	5
	Geoffrey Taylor	1950	5
30	Antonio Lago	1948	4
	Carlo Marchetti	1948	4
	Ernesto Maserati	1949	4
	Geoffrey Taylor	1951	4
34	Ferdinand Porsche	1948	3
	Amédée Gordini	1949	3
	Gioacchino Colombo	1949	3
	Aurelio Lampredi	1950	3
38	Amédée Gordini	1946	2
	Dante Giacosa	1948	2
	Dante Giacosa	1949	2
	Geoffrey Taylor	1949	2
	Owen Maddock	1950	2
	Arialdo Ruggieri	1951	2
	Ernesto Maserati	1951	2
	Peter Berthon	1951	2
46	Ferdinand Porsche	1946	1
	Ferdinand Porsche	1947	1
	Gioacchino Colombo	1947	1
	Aurelio Lampredi	1948	1
	Geoffrey Taylor	1948	1
	Alf Francis	1951	1
	Ernst Loof	1951	1
	John Heath	1951	1

Finishing position: