John Robert Mantz
Birthplace: Hebron, Indiana
Born: September 18, 1918
Died: October 25, 1972
Johnny Mantz
John Robert Mantz
Birthplace: Hebron, Indiana
Born: September 18, 1918
Died: October 25, 1972
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| Track | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Arlington | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | |
| Del Mar | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 0 |
| Detroit-DO | 0 | 1 | 0 | 0 | 0 | 0 | 0 | NS | 0 |
| DuQuoin | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 16 | 0 |
| Indianapolis | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 7 | 0 |
| Langhorne | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 0 |
| Milwaukee | 5 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | |
| Pikes Peak | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 0 |
| Sacramento | 0 | 1 | 0 | 0 | 0 | 0 | 0 | NS | 0 |
| Springfield | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 0 |
| Syracuse | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 0 |
| Trenton | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 0 |
| Williams Grove | Non | points | race | only |
| Chassis | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Kurtis | 16 | 3 | 1 | 0 | 1 | 0 | 1 | 1 | |
| Unknown | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 0 |
| Engine | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Offy | 17 | 3 | 1 | 0 | 1 | 0 | 1 | 1 | |
| Unknown | Non | points | race | only |