Indy 500 Career Stats - John Mahler
| Starts | Total Laps | Best Start | Best Finish | Top 5 | Top 10 | Races Led | Laps Led | Winnings |
| 4 | 380 | 17 | 14 | - | - | - | - | $ 71,905 |
| Year | Finish | Start | Car # | Car Name/Entrant* | C/E/T | Qual Speed | Run/Out | Laps | Led | Winnings |
| 1979 | 25 | 32 | 92 | Intercomp/Sports Magazine | Eagle / Offy / Goodyear | 184.320 | Fuel pump | 66 | 0 | $18,894 |
| 1978 | 26 | 17 | 39 | Tibon | Eagle / Offy / Goodyear | 189.770 | Timing gear | 58 | 0 | $16,330 |
| 1977 | 14 | 31 | 42 | Mergard 20th Century | Eagle / Offy / Goodyear | 185.240 | Running | 157 | 0 | $20,668 |
| 1972 | 22 | 29 | 31 | Harbor Fuel Oil | McLaren / Offy / Goodyear | 179.490 | Piston | 99 | 0 | $16,013 |










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