| series | Champcar complete |
| team | Vanguard Racing |
| year | race | car | entry | driver | start | finish | chassis | engine | laps led | * | |
| 1972 | Phoenix | 31 | Harbor Fuel Oil | John Mahler | | DNS | Eagle 68 [401] | Offy 159 tc | |||
| 1972 | Trenton | 31 | Harbor Fuel Oil | John Mahler | | 17 | 8 | Eagle 68 [401] | Offy 159 tc | ||
| 1972 | Indy 500 | 31 | Harbor Fuel Oil | John Mahler | | 29 | 22 | McLaren M15A [A-1] | Offy 159 tc | ||
| 1972 | Indy 500 | 78 | Harbor Fuel Oil | John Mahler | | DNS | Eagle 68 [401] | Offy 159 tc | |||
| 1972 | Milwaukee | 31 | Harbor Fuel Oil | John Mahler | | 24 | 11 | McLaren M15A [A-1] | Offy 159 tc | ||
| 1972 | Pocono | 31 | Harbor Fuel Oil | John Mahler | | 10 | 27 | McLaren M15A [A-1] | Offy 159 tc | ||
| 1972 | Milwaukee II | 31 | Harbor Fuel Oil | John Mahler | | 22 | 25 | McLaren M15A [A-1] | Offy 159 tc | ||
| 1972 | Phoenix II | 31 | Harbor Fuel Oil | John Mahler | | DNS | McLaren M15A [A-1] | Offy 159 tc |
