| #1 | #2 | #3 | Porsche | ||
|---|---|---|---|---|---|
| 1985 | Chevrolet (1,418,098) | Renault (1,322,887) | Oldsmobile (1,192,549) | 52,939 | |
| 1984 | Chevrolet (1,655,151) | Renault (1,429,138) | Ford (1,180,708) | 48,288 | |
| 1983 | Renault (1,491,853) | Chevrolet (1,175,200) | Toyota (1,068,321) | 48,288 | |
| 1982 | Renault (1,491,853) | Chevrolet (1,297,357) | Toyota (1,068,321) | 48,288 | |
| 1981 | Chevrolet (1,673,093) | Renault (1,295,713) | Toyota (1,068,321) | 48,288 | |
| 1980 | Chevrolet (2,288,745) | Renault (1,492,339) | Ford (1,162,275) | 28,622 | |
| 1979 | Chevrolet (2,284,749) | Ford (1,835,937) | Renault (1,405,330) | 36,879 | |
| 1978 | Chevrolet (2,375,436) | Ford (1,923,655) | Renault (1,240,941) | 36,879 | |
| 1977 | Chevrolet (2,543,153) | Toyota (1,884,260) | Ford (1,840,427) | 36,879 | |
| 1976 | Chevrolet (2,103,862) | Toyota (1,884,260) | Ford (1,861,537) | 36,879 | |
| 1975 | Chevrolet (1,755,773) | Toyota (1,714,836) | Ford (1,569,608) | 16,224 |
