Used Cadillac CT6 Prices by Year
As of July 2026, a used Cadillac CT6 typically lists for $23,695 in the US. Depending on model year, typical asking prices run from $19,892 for a 2016 to $36,791 for a 2020 — every figure below is a national median of 340 live listings, not a book value, and the CT6 steps down a median 16.7% 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 | $36,791 | $27,666 – $61,065 | 63,522 mi | 17–21 MPG | — | 45 |
| 2019 | $28,433 | $22,096 – $35,596 | 75,442 mi | 17–28 MPG | — | 53 |
| 2018 | $23,695 | $17,877 – $34,593 | 79,654 mi | 21–25 MPG | — | 95 |
| 2017 | $19,998 | $14,995 – $28,068 | 89,435 mi | 21–26 MPG | — | 90 |
| 2016 | $19,892 | $15,458 – $26,689 | 90,454 mi | 21–25 MPG | — | 57 |
“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 $19,892 (most between $15,458 and $26,689) with an average odometer of 90,454 miles. Before chasing the lowest price, weigh mileage against a one-year-newer car — each model year of age saves a median 16.7%, 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 $36,791 (most between $27,666 and $61,065).
Frequently asked questions
How much does a used Cadillac CT6 cost?
As of July 2026, a used Cadillac CT6 typically lists for $23,695 nationally. Depending on model year, typical prices run from $19,892 (2016) to $36,791 (2020), based on 340 live listings.
How much is a 2020 Cadillac CT6?
A used 2020 Cadillac CT6 typically lists for $36,791, with most asking prices between $27,666 and $61,065. Average odometer reading is 63,522 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 $19,892 — but compare its mileage (90,454 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 16.7% per model year of age — e.g. moving one year older typically saves about that share of the price.
How much is a used 2018 Cadillac CT6?
A used 2018 Cadillac CT6 typically lists for $23,695, with most asking prices between $17,877 and $34,593; average odometer is 79,654 miles (95 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.