Roberto Guerrero CART/Champ Car results at Long Beach
| Year | Race # | Start | Finish | Car # | Sponsor | Chassis | Engine | Tire | Owner | Qualifying Speed | Laps | X Led | Laps Led | Status | Points |
| 1984 | 1 | 5 | 26 | 9 | Master Mechanic | March | Cosworth | Goodyear | Bignotti | | 10 | 0 | 0 | engine | 0 |
| 1985 | 1 | 8 | 26 | 9 | Master Mechanic/Emerson | March | Cosworth | Goodyear | Bignotti | 90.766 | 3 | 0 | 0 | suspension | 0 |
| 1986 | 2 | 13 | 24 | 2 | True Value-Emerson | March | Cosworth | Goodyear | Cotter | 88.200 | 0 | 0 | 0 | DNS (engine) | 0 |
| 1987 | 1 | 2 | 12 | 4 | True Value/STP | March | Cosworth | Goodyear | Vince Granatelli | 89.995 | 88 | 0 | 0 | fire | 1 |
| 1988 | 2 | 10 | 19 | 2 | STP/Dianetics | Lola | Cosworth | Goodyear | Vince Granatelli | 87.705 | 41 | 0 | 0 | engine | 0 |
| 1990 | 2 | 19 | 14 | 20 | Miller Genuine Draft | March | Alfa Romeo | Goodyear | Patrick | 86.064 | 91 | 0 | 0 | flagged | 0 |
| 1992 | 3 | 14 | 13 | 26 | Quaker State | Lola | Buick | Goodyear | Bernstein | 102.861 | 69 | 0 | 0 | electrical | 0 |
| 1993 | 3 | 18 | 5 | 40 | Budweiser King | Lola | Chevrolet | Goodyear | Bernstein | 105.040 | 104 | 0 | 0 | flagged | 10 |
