Roberto Guerrero CART/Champ Car results at Toronto
| Year | Race # | Start | Finish | Car # | Sponsor | Chassis | Engine | Tire | Owner | Qualifying Speed | Laps | X Led | Laps Led | Status | Points |
| 1986 | 8 | 6 | 20 | 2 | True Value-Emerson | March | Cosworth | Goodyear | Cotter | 105.232 | 61 | 0 | 0 | brake rotor | 0 |
| 1987 | 8 | 2 | 4 | 4 | True Value/STP | March | Cosworth | Goodyear | Vince Granatelli | 104.591 | 101 | 1 | 1 | flagged | 12 |
| 1989 | 9 | 19 | 28 | 21 | Alfa Romeo | March | Alfa Romeo | Goodyear | Morales | 102.489 | 4 | 0 | 0 | oil leak | 0 |
| 1991 | 10 | 18 | 18 | 50 | Fendi/Hawaiian Tropic | Lola | Cosworth | Goodyear | Euromotorsport | 102.147 | 37 | 0 | 0 | fire | 0 |
| 1993 | 9 | 14 | 10 | 40 | Budweiser King | Lola | Chevrolet | Goodyear | Bernstein | 108.006 | 102 | 0 | 0 | flagged | 3 |
