2004 Audi A6 Resale Values
| Mileage | Trade-In-Value | Retail Value |
| Clean | Average | Rough | Excellent | Clean | Average | Rough |
| 1 - 25,000 | $15,883 | $13,903 | $9,297 | $19,817 | $18,704 | $16,017 | $12,092 |
| 25,001 - 30,000 | $15,783 | $13,803 | $9,297 | $19,717 | $18,604 | $15,917 | $12,092 |
| 30,001 - 40,000 | $15,683 | $13,703 | $9,297 | $19,542 | $18,504 | $15,817 | $12,092 |
| 40,001 - 50,000 | $15,508 | $13,603 | $9,297 | $19,367 | $18,329 | $15,717 | $12,092 |
| 50,001 - 60,000 | $15,333 | $13,428 | $9,297 | $18,642 | $18,154 | $15,542 | $12,092 |
| 60,001 - 70,000 | $14,558 | $13,253 | $9,297 | $17,892 | $17,379 | $15,367 | $12,092 |
| 70,001 - 85,000 | $13,883 | $12,453 | $9,297 | $17,342 | $16,704 | $14,567 | $12,092 |
| 85,001 - 100,000 | $13,333 | $11,803 | $8,472 | $16,842 | $16,154 | $13,917 | $11,267 |
| 100,001 - 115,000 | $12,833 | $11,253 | $7,872 | $19,367 | $15,654 | $13,367 | $10,667 |
| 115,001 - 130,000 | $15,333 | $10,753 | $7,322 | $19,367 | $18,154 | $12,867 | $10,117 |
| 130,001 - 150,000 | $15,333 | $10,303 | $6,822 | $19,367 | $18,154 | $12,417 | $9,617 |
| 150,001 - 999,999 | $15,333 | $9,803 | $6,397 | $19,367 | $18,154 | $11,917 | $9,192 |
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