| #1 | #2 | #3 | Maserati | ||
|---|---|---|---|---|---|
| 1978 | Chevrolet (2,375,436) | Ford (1,923,655) | Renault (1,240,941) | 292 | |
| 1977 | Chevrolet (2,543,153) | Toyota (1,884,260) | Ford (1,840,427) | 292 | |
| 1976 | Chevrolet (2,103,862) | Toyota (1,884,260) | Ford (1,861,537) | ||
| 1975 | Chevrolet (1,755,773) | Toyota (1,714,836) | Ford (1,569,608) | ||
| 1974 | Chevrolet (2,333,839) | Ford (2,179,791) | Renault (1,355,799) | ||
| 1973 | Chevrolet (2,579,509) | Ford (2,349,815) | Fiat (1,390,251) | 738 | |
| 1972 | Chevrolet (2,420,564) | Ford (2,246,563) | Fiat (1,368,216) | ||
| 1971 | Ford (2,054,351) | Chevrolet (1,830,319) | Volkswagen (1,128,784) | ||
| 1970 | Ford (2,096,184) | Chevrolet (1,451,305) | Volkswagen (1,193,853) | ||
| 1969 | Chevrolet (2,092,947) | Ford (1,826,777) | Volkswagen (1,241,580) | ||
| 1968 | Chevrolet (2,139,290) | Ford (1,753,334) | Volkswagen (1,191,854) |
