2003 Buick Century Resale Values
| Mileage | Trade-In-Value | Retail Value |
| Clean | Average | Rough | Excellent | Clean | Average | Rough |
| 1 - 20,000 | $6,995 | $5,725 | $3,120 | $9,900 | $9,175 | $7,325 | $4,750 |
| 20,001 - 30,000 | $6,895 | $5,625 | $3,120 | $9,800 | $9,075 | $7,225 | $4,750 |
| 30,001 - 40,000 | $6,795 | $5,525 | $3,120 | $9,700 | $8,975 | $7,125 | $4,750 |
| 40,001 - 50,000 | $6,695 | $5,425 | $3,120 | $9,600 | $8,875 | $7,025 | $4,750 |
| 50,001 - 60,000 | $6,595 | $5,325 | $3,120 | $9,350 | $8,775 | $6,925 | $4,750 |
| 60,001 - 70,000 | $6,345 | $5,225 | $3,120 | $8,825 | $8,525 | $6,825 | $4,750 |
| 70,001 - 85,000 | $5,720 | $4,975 | $3,120 | $8,225 | $7,900 | $6,575 | $4,750 |
| 85,001 - 100,000 | $5,220 | $4,350 | $3,120 | $7,725 | $7,400 | $5,950 | $4,750 |
| 100,001 - 115,000 | $4,720 | $3,925 | $2,470 | $7,200 | $6,900 | $5,525 | $4,100 |
| 115,001 - 130,000 | $4,170 | $3,350 | $2,020 | $9,350 | $6,350 | $4,950 | $3,650 |
| 130,001 - 150,000 | $6,345 | $2,750 | $1,495 | $9,350 | $8,525 | $4,350 | $3,125 |
| 150,001 - 999,999 | $6,345 | $2,325 | $970 | $9,350 | $8,525 | $3,925 | $2,600 |
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