Mario Andretti CART/Champ Car results at Portland
| Year | Race # | Start | Finish | Car # | Sponsor | Chassis | Engine | Tire | Owner | Qualifying Speed | Laps | X Led | Laps Led | Status | Points |
| 1984 | 5 | 1 | 26 | 3 | Budweiser-Newman-Haas | Lola | Cosworth | Goodyear | Newman-Haas | 115.988 | 13 | 1 | 4 | overheating | 1 |
| 1985 | 4 | 4 | 1 | 1 | Beatrice | Lola | Cosworth | Goodyear | Newman-Haas | 114.596 | 104 | 3 | 29 | flagged | 20 |
| 1986 | 5 | 7 | 1 | 5 | Hanna Car Wash | Lola | Cosworth | Goodyear | Newman-Haas | 91.437 | 104 | 1 | 1 | flagged | 20 |
| 1987 | 5 | 5 | 10 | 5 | Hanna Car Wash | Lola | Chevrolet | Goodyear | Newman-Haas | 115.371 | 65 | 0 | 0 | fuel pickup | 3 |
| 1988 | 5 | 5 | 5 | 6 | Amoco/Kmart | Lola | Chevrolet | Goodyear | Newman-Haas | 116.147 | 103 | 0 | 0 | flagged | 10 |
| 1989 | 6 | 3 | 25 | 5 | Kmart/Havoline | Lola | Chevrolet | Goodyear | Newman-Haas | 119.334 | 19 | 0 | 0 | electrical | 0 |
| 1990 | 6 | 4 | 2 | 6 | Kmart/Havoline | Lola | Chevrolet | Goodyear | Newman-Haas | 120.885 | 104 | 2 | 3 | flagged | 16 |
| 1991 | 7 | 7 | 5 | 6 | Kmart/Havoline | Lola | Chevrolet | Goodyear | Newman-Haas | 120.362 | 104 | 0 | 0 | flagged | 10 |
| 1992 | 6 | 8 | 6 | 2 | Kmart/Texaco Havoline | Lola | Ford | Goodyear | Newman-Haas | 112.101 | 101 | 0 | 0 | flagged | 8 |
| 1993 | 7 | 5 | 6 | 6 | Kmart/Texaco-Havoline | Lola | Ford | Goodyear | Newman-Haas | 113.379 | 101 | 1 | 1 | flagged | 8 |
| 1994 | 7 | 16 | 9 | 6 | Kmart/Texaco-Havoline | Lola | Ford | Goodyear | Newman-Haas | 113.774 | 100 | 0 | 0 | flagged | 4 |
