The average asking price for a used 2003 Porsche Boxster is $18,589, with 68,749 miles on average, across 41 cars for sale at U.S. dealers as of Nov 10, 2026.
| State | Average asking | Average miles | For sale | Days listed |
|---|---|---|---|---|
| California | $29,281 | 46,600 | 6 | 87 |
| Texas | $16,185 | 79,429 | 5 | 210 |
Used and certified cars for sale at US dealers, each car counted once. Days listed are the dealer’s own days on market where they publish it. Price moves compare the same cars at both ends of the window.
| $17,558 |
| 71,066 |
| 32 |
| 2003 | $18,589 | 68,749 | 41 |
| 2002 | $16,700 | 67,425 | 46 |
| 2001 | $15,857 | 64,668 | 57 |
| 2000 | $16,247 | 63,503 | 56 |
| 1999 | $13,666 | 80,645 | 39 |
| 1998 | $13,886 | 70,717 | 24 |
| 1997 | $15,769 | 63,451 | 16 |
| 1976 | $25,995 | 65,000 | 2 |