Used Cadillac CT6 Prices by Year
As of October 2026, a used Cadillac CT6 typically lists for $22,298 in the US. Depending on model year, typical asking prices run from $16,781 for a 2016 to $32,683 for a 2020 — every figure below is a national median of 471 live listings, not a book value, and the CT6 steps down a median 14.8% per model year of age.
Cadillac CT6 price by model year
| Year | Typical price | Most listings fall between | Avg mileage | EPA combined | NCAP | For sale |
|---|---|---|---|---|---|---|
| 2020 | $32,683 | $24,098 – $47,173 | 70,899 mi | 17–21 MPG | — | 47 |
| 2019 | $29,000 | $18,982 – $48,428 | 74,085 mi | 17–28 MPG | — | 83 |
| 2018 | $22,298 | $16,990 – $30,500 | 85,599 mi | 21–25 MPG | — | 111 |
| 2017 | $18,995 | $14,553 – $25,866 | 92,485 mi | 21–26 MPG | — | 144 |
| 2016 | $16,781 | $12,886 – $23,835 | 102,273 mi | 21–25 MPG | — | 86 |
“Typical price” is the national median asking price; the range covers the middle 80% of listings (10th–90th percentile), so it excludes teaser and outlier prices on both ends.
Cheapest Cadillac CT6
The cheapest quotable model year is the 2016, typically listing for $16,781 (most between $12,886 and $23,835) with an average odometer of 102,273 miles. Before chasing the lowest price, weigh mileage against a one-year-newer car — each model year of age saves a median 14.8%, and the per-year table above shows where the price-per-mile balance is best. See the cheapest Cadillac CT6 listings for sale →
Most expensive Cadillac CT6
The priciest used model year is the 2020 at a typical $32,683 (most between $24,098 and $47,173).
Frequently asked questions
How much does a used Cadillac CT6 cost?
As of October 2026, a used Cadillac CT6 typically lists for $22,298 nationally. Depending on model year, typical prices run from $16,781 (2016) to $32,683 (2020), based on 471 live listings.
How much is a 2020 Cadillac CT6?
A used 2020 Cadillac CT6 typically lists for $32,683, with most asking prices between $24,098 and $47,173. Average odometer reading is 70,899 miles.
What's the cheapest year of the Cadillac CT6 worth looking at?
The 2016 model year is the least expensive quotable year at a typical $16,781 — but compare its mileage (102,273 miles on average) and per-year table above before deciding; a newer year at a small premium often carries far fewer miles.
How fast does the Cadillac CT6 depreciate?
Across adjacent model years currently on the market, the CT6 steps down a median 14.8% per model year of age — e.g. moving one year older typically saves about that share of the price.
How much is a used 2017 Cadillac CT6?
A used 2017 Cadillac CT6 typically lists for $18,995, with most asking prices between $14,553 and $25,866; average odometer is 92,485 miles (144 for sale).
https://vehisales.com/research/prices/cadillac/ct6.
See also: Cadillac CT6 hub — live listings & specs · Cadillac CT6 MPG by year · All model price pages · Best used cars by budget.