2004 Audi S4 Resale Values
| Mileage | Trade-In-Value | Retail Value |
| Clean | Average | Rough | Excellent | Clean | Average | Rough |
| 1 - 25,000 | $21,848 | $19,628 | $13,893 | $26,408 | $25,092 | $22,108 | $17,358 |
| 25,001 - 30,000 | $21,748 | $19,528 | $13,893 | $26,308 | $24,992 | $22,008 | $17,358 |
| 30,001 - 40,000 | $21,648 | $19,428 | $13,893 | $26,058 | $24,892 | $21,908 | $17,358 |
| 40,001 - 50,000 | $21,398 | $19,328 | $13,893 | $25,833 | $24,642 | $21,808 | $17,358 |
| 50,001 - 60,000 | $21,173 | $19,078 | $13,893 | $25,033 | $24,417 | $21,558 | $17,358 |
| 60,001 - 70,000 | $20,298 | $18,853 | $13,893 | $24,133 | $23,542 | $21,333 | $17,358 |
| 70,001 - 85,000 | $19,298 | $17,928 | $13,893 | $23,183 | $22,542 | $20,408 | $17,358 |
| 85,001 - 100,000 | $18,473 | $16,853 | $12,943 | $22,433 | $21,717 | $19,333 | $16,408 |
| 100,001 - 115,000 | $17,773 | $16,178 | $11,918 | $25,833 | $21,017 | $18,658 | $15,383 |
| 115,001 - 130,000 | $21,173 | $15,478 | $11,218 | $25,833 | $24,417 | $17,958 | $14,683 |
| 130,001 - 150,000 | $21,173 | $14,853 | $10,493 | $25,833 | $24,417 | $17,333 | $13,958 |
| 150,001 - 999,999 | $21,173 | $14,353 | $10,043 | $25,833 | $24,417 | $16,833 | $13,508 |
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