Jason Leffler NASCAR Nationwide Series NASCAR Nationwide Series

| Year_ | Starts | Wins | Top_5 | Top_10 | Poles | Avg_Start | Avg_Finish | Winnings | Position_ | Teams |
|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | 4 | 0 | 0 | 0 | 0 | 28.0 | 26.8 | $36,400 | 74th | #18 Joe Gibbs Racing |
| 2000 | 31 | 0 | 2 | 4 | 3 | 24.3 | 23.0 | $513,068 | 20th | #18 Joe Gibbs Racing |
| 2003 | 6 | 0 | 1 | 1 | 0 | 15.0 | 14.3 | $113,345 | 52nd | #00 Haas CNC Racing |
| 2004 | 27 | 1 | 8 | 17 | 1 | 9.4 | 11.0 | $1,168,779 | 12th | #00 Haas CNC Racing |
| 2005 | 15 | 0 | 2 | 7 | 0 | 19.0 | 14.6 | $400,883 | 30th | #32 Braun Racing |
| 2006 | 35 | 0 | 3 | 7 | 2 | 20.2 | 21.2 | $1,182,579 | 13th | #32/#38 Braun Racing |
| 2007 | 35 | 1 | 7 | 11 | 2 | 17.6 | 17.5 | $1,691,099 | 3rd | #38 Braun Racing |