Retirements in a Season

until 1950 British GP

Include 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	Ernesto Maserati	1946	29
4	Reid Railton	1947	27
5	Antonio Lago	1949	20
5	Carlo Marchetti	1949	20
7	Reid Railton	1948	15
8	Amédée Gordini	1947	12
9	Ernesto Maserati	1948	11
10	Reid Railton	1949	8
11	Antonio Lago	1950	7
11	Carlo Marchetti	1950	7
13	Amédée Gordini	1948	6
13	Gioacchino Colombo	1950	6
15	Gioacchino Colombo	1946	5
15	Reid Railton	1946	5
17	Antonio Lago	1948	4
	Carlo Marchetti	1948	4
	Ernesto Maserati	1949	4
20	Ferdinand Porsche	1948	3
	Amédée Gordini	1949	3
	Gioacchino Colombo	1949	3
	Reid Railton	1950	3
24	Amédée Gordini	1946	2
	Dante Giacosa	1948	2
	Dante Giacosa	1949	2
	Geoffrey Taylor	1949	2
	Alberto Massimino	1950	2
	Arialdo Ruggieri	1950	2
	Geoffrey Taylor	1950	2
31	Ferdinand Porsche	1946	1
	Ferdinand Porsche	1947	1
	Gioacchino Colombo	1947	1
	Aurelio Lampredi	1948	1
	Geoffrey Taylor	1948	1
	Amédée Gordini	1950	1
	Ernesto Maserati	1950	1

Finishing position: