| Event | Qualified | Finished | Points | Rank |
| Daytona 500 | DNQ | DNQ | 31 | 44 |
| Auto Club 500 | DNQ | DNQ | 62 | 44 |
| UAW-Dodge 400 | DNQ | DNQ | 93 | 46 |
| Kobalt Tools 500 | 34 | 27 | 175 | 43 |
| Food City 500 | 43 | 40 | 218 | 43 |
| Goody's Cool Orange 500 | 30 | 31 | 288 | 41 |
| Samsung 500 | 43 | 29 | 364 | 40 |
| Subway Fresh Fit 500 | 25 | 28 | 443 | 40 |
| Aaron's 499 | 4 | 30 | 521 | 40 |
| Dan Lowry 400 | 18 | 39 | 572 | 40 |
| Dodge Challenger 500 | 26 | 27 | 654 | 40 |
| Coca-Cola 600 | 27 | 20 | 757 | 39 |
| Dover 400 | 8 | 37 | 809 | 39 |
| Pocono 500 | 8 | 12 | 936 | 37 |
| Michigan 400 | 39 | 19 | 1047 | 37 |
| Toyota/Save Mart 350 | 36 | 37 | 1099 | 37 |
| Lenox Industrial Tools 301 | 10 | 43 | 1133 | 38 |
| Coke Zero 400 | 13 | 42 | 1170 | 37 |
| Chicago 400 | 39 | 13 | 1294 | 37 |
| Allstate 400 | 26 | 10 | 1433 | 37 |
| Pennsylvania 500 | 31 | 19 | 1539 | 37 |
| 2008 is AJ's sophomore season in Cup | ||||
| Month | Date | Event | Location | Channel |
| FEB | 17 | Daytona 500 | Daytona International Speedway | FOX |
| 25 | Auto Club 500 | California Speedway | FOX |
| MAR | 2 | UAW-Dodge 400 | Las Vegas Motor Speedway | FOX |
| 9 | Kobalt Tools 500 | Atlanta Motor Speedway | FOX | |
| 16 | Food City 500 | Bristol Motor Speedway | FOX | |
| 30 | Goody's Cool Orange 500 | Martinsville Speedway | FOX |
| APR | 6 | Samsung 500 | Texas Motor Speedway | FOX |
| 12 | Subway Fresh Fit 500 | Phoenix International Raceway | FOX | |
| 27 | Aaron's 499 | Talladega Superspeedway | FOX |
| MAY | 3 | Dan Lowry 400 | Richmond International Raceway | FOX |
| next | ||||