| #1 | #2 | #3 | Austin-Healey | |
|---|---|---|---|---|
| 1973 | Chevrolet (2,579,509) | Ford (2,349,815) | Fiat (1,390,251) | |
| 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) | |
| 1967 | Chevrolet (2,206,639) | Ford (1,730,224) | Toyota (1,068,321) | |
| 1966 | Ford (2,212,415) | Chevrolet (2,206,639) | Volkswagen (1,168,146) | |
| 1965 | Chevrolet (2,375,118) | Ford (2,170,795) | Volkswagen (1,174,687) | |
| 1964 | Chevrolet (2,318,619) | Ford (1,594,053) | Toyota (1,068,321) | |
| 1963 | Chevrolet (2,237,201) | Ford (1,525,404) | Fiat (957,941) | 8,348 |
