Cadillac STS depreciation
A 2008 Cadillac STS averages $6,485 — a 2005 averages $7,000 (8% higher).
Updated July 25, 2026 · Live dealer listing data
Average price by model year
| Year | Average price | Avg. mileage | vs. previous year | Listings |
|---|---|---|---|---|
| 2008 | $6,485 | 113,897 | −$1,706 | 12 |
| 2006 | $8,191 | 115,178 | +$1,191 | 13 |
| 2005 | $7,000 | 90,412 | — | 10 |
Frequently asked questions
Which Cadillac STS model year is cheapest?
The 2008 Cadillac STS is the most affordable model year we track, averaging $6,485. Compare every year in the table above.
How many Cadillac STS model years can I compare here?
This depreciation curve covers 3 model years, from 2005 to 2008, each averaged from live dealer listings and refreshed daily.
Shopping for this car?
Check individual VINs before you buy — decode the exact trim and mileage, see every active listing, and how each price compares to the local market.