Non-championship race in the 1971 Formula One season
Race details
Date
March 28, 1971 (1971-03-28)
Official name
Questor Grand Prix
Location
Ontario Motor Speedway, California, United States
Course
Permanent racing facility
Course length
5.141 km (3.194 miles)
Distance
64 laps, 329.02 km (204.42 miles)
Pole position
Driver
Jackie Stewart
Tyrrell-Cosworth
Time
1:41.257
Fastest lap
Driver
Pedro Rodriguez
BRM
Time
1:42.777
Podium
First
Mario Andretti
Ferrari
Second
Jackie Stewart
Tyrrell-Cosworth
Third
Denny Hulme
McLaren-Cosworth
Motor car race
The Questor Grand Prix was a non-championship race for Formula One and Formula 5000 cars held on 28 March 1971 to inaugurate a new racing facility in California, the Ontario Motor Speedway, built by the Questor conglomerate.
Because of the smaller fuel tanks of the F5000 cars, the race was run in two heats of 32 laps, and the final result decided by a points system. Jackie Stewart qualified on pole for Heat 1 and finished runner-up behind Mario Andretti. Chris Amon set fastest lap. Andretti and Stewart again finished first and second in Heat 2 and Pedro Rodriguez set fastest lap, quicker than Amon's time in Heat 1. Mario Andretti was declared the winner; with Stewart in second place and Denny Hulme third. Mark Donohue was the best-placed F5000 finisher in Heat 1, and Ron Grable best in Heat 2. Grable was also the best-placed F5000 driver on aggregate.
Hopes for a regular fixture rapidly faded due to financial problems; the Questor Grand Prix remained a one-off event and the Ontario Motor Speedway was never again host to Formula One cars.
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Global Information
Pedro Rodriguez
