| 30.1.2008 | Sebring Test | 6 | #9R6 801 | Maassen / Long | Team Penske | 5th |
| 30.1.2008 | Sebring Test | 7 | #9R6 802 | Bernhard / Dumas | Team Penske | 4th |
| 30.1.2008 | Sebring Test | 16 | #9R6 705 | Dyson / Smith | Dyson Racing | 8th |
| 30.1.2008 | Sebring Test | 20 | #9R6 704 | Franchitti / Leitzinger | Dyson Racing | 9th |
| 3.3.2008 | LMS Test Paul Ricard | 31 | #9R6 709 | Nielsen / Elgaard | Team Essex | 9th |
| 3.3.2008 | LMS Test Paul Ricard | 34 | #9R6 708 | van Merksteijn / Bleekemolen / Verstappen | Van Merksteijn Motorsport | 8th |
| 15.3.2008 | 12 h Sebring | 6 | #9R6 801 | Maassen | Penske Racing | 31st |
| 15.3.2008 | 12 h Sebring | 7 | #9R6 802 | Bernhard / Dumas / Collard | Penske Racing | 1st |
| 15.3.2008 | 12 h Sebring | 16 | #9R6 705 | Dyson / Smith | Dyson Racing Team | 4th |
| 15.3.2008 | 12 h Sebring | 20 | #9R6 704 | Leitzinger / Franchitti / Lally | Dyson Racing Team | 2nd |
| 15.3.2008 | 12 h Sebring | 27 | #9R6 707 | Lammers / Lienhard / Theys | Horag Racing | 7th |
| 5.4.2008 | 1 h 55 min St. Petersburg | 6 | #9R6 801 | Maassen / Long | Penske Racing | 4th |
| 5.4.2008 | 1 h 55 min St. Petersburg | 7 | #9R6 710 | Bernhard / Dumas | Penske Racing | 2nd |
| 5.4.2008 | 1 h 55 min St. Petersburg | 16 | #9R6 705 | Dyson / Smith | Dyson Racing Team | 5th |
| 5.4.2008 | 1 h 55 min St. Petersburg | 20 | #9R6 704 | Franchitti / Leitzinger | Dyson Racing Team | 20th |
| 6.4.2008 | 1000 km Catalunya | 27 | #9R6 707 | Theys / Lienhard / Lammers | Horag Racing | 14th |
| 6.4.2008 | 1000 km Catalunya | 31 | #9R6 709 | Elgaard / Nielsen | Team Essex | 9th |
| 6.4.2008 | 1000 km Catalunya | 34 | #9R6 708 | Verstappen / van Merksteijn | Van Merksteijn MotorsportVAN | 6th |
| 19.4.2008 | 100 min Long Beach | 6 | #9R6 801 | Maassen / Long | Penske Racing | 5th |
| 19.4.2008 | 100 min Long Beach | 7 | #9R6 710 | Bernhard / Dumas | Penske Racing | 4th |
| 19.4.2008 | 100 min Long Beach | 16 | #9R6 705 | Dyson / Smith | Dyson Racing Team | 9th |
| 19.4.2008 | 100 min Long Beach | 20 | #9R6 704 | Franchitti / Leitzinger | Dyson Racing Team | 7th |
| 27.4.2008 | 1000 km Monza | 27 | #9R6 707 | Lienhard / Theys / Lammers | Horag Racing | 10th |
| 27.4.2008 | 1000 km Monza | 31 | #9R6 709 | Elgaard / Nielsen | Team Essex | 8th |
| 27.4.2008 | 1000 km Monza | 34 | #9R6 708 | van Merksteijn / Verstappen | Van Merksteijn Motorsport | 9th |
| 11.5.2008 | 1000 km Spa | 27 | #9R6 707 | Lienhard / Theys / Lammers | Horag Racing | 7th |
| 11.5.2008 | 1000 km Spa | 31 | #9R6 709 | Elgaard / Nielsen | Team Essex | 8th |
| 11.5.2008 | 1000 km Spa | 34 | #9R6 708 | Verstappen / van Merksteijn | Van Merksteijn Motorsport | 6th |
| 18.5.2008 | 2 h 45 min Salt Lake City | 6 | #9R6 801 | Maassen / Long | Penske Racing | 2nd |
| 18.5.2008 | 2 h 45 min Salt Lake City | 7 | #9R6 710 | Bernhard / Dumas | Penske Racing | 1st |
| 18.5.2008 | 2 h 45 min Salt Lake City | 16 | #9R6 705 | Dyson / Smith | Dyson Racing Team | 6th |
| 18.5.2008 | 2 h 45 min Salt Lake City | 20 | #9R6 704 | Leitzinger / Franchitti | Dyson Racing Team | 4th |
| 1.6.2008 | Le Mans Test | 31 | #9R6 709 | Nielsen / Elgaard / Maassen | Team Essex | 15th |
| 1.6.2008 | Le Mans Test | 34 | #9R6 708 | van Merksteijn / Verstappen / Bleekemolen | Van Merksteijn Motorsport | 14th |
| 15.6.2008 | 24 h Le Mans | 31 | #9R6 709 | Nielsen / Elgaard / Maassen | Team Essex | 12th |
| 15.6.2008 | 24 h Le Mans | 34 | #9R6 708 | van Merksteijn / Verstappen / Bleekemolen | Van Merksteijn Motorsport | 10th |
| 12.7.2008 | 2 h 45 min Lime Rock | 6 | #9R6 801 | Maassen / Long | Penske Racing | 3rd |
| 12.7.2008 | 2 h 45 min Lime Rock | 7 | #9R6 710 | Dumas / Bernhard | Penske Racing | 2nd |
| 12.7.2008 | 2 h 45 min Lime Rock | 16 | #9R6 705 | Dyson / Smith | Dyson Racing Team | 23rd |
| 12.7.2008 | 2 h 45 min Lime Rock | 20 | #9R6 704 | Franchitti / Leitzinger | Dyson Racing Team | 7th |
| 19.7.2008 | 2 h 45 min Mid-Ohio | 6 | #9R6 801 | Maassen / Long | Penske Racing | 6th |
| 19.7.2008 | 2 h 45 min Mid-Ohio | 7 | #9R6 710 | Bernhard / Dumas | Penske Racing | 3rd |
| 19.7.2008 | 2 h 45 min Mid-Ohio | 16 | #9R6 705 | Dyson / Smith | Dyson Racing Team | 7th |
| 19.7.2008 | 2 h 45 min Mid-Ohio | 20 | #9R6 704 | Leitzinger / Franchitti | Dyson Racing Team | 8th |
| 9.8.2008 | 4 h Road America | 6 | #9R6 801 | Maassen / Long | Penske Racing | 6th |
| 9.8.2008 | 4 h Road America | 7 | #9R6 710 | Dumas / Bernhard | Penske Racing | 4th |
| 9.8.2008 | 4 h Road America | 16 | #9R6 705 | Smith / Dyson | Dyson Racing Team | 9th |
| 9.8.2008 | 4 h Road America | 20 | #9R6 704 | Franchitti / Leitzinger | Dyson Racing Team | 5th |
| 17.8.2008 | 1000 km Nürburgring | 27 | #9R6 707 | Theys / Lienhard / Lammers | Horag Racing | 23rd |