Used Cadillac CT6 Prices by Year
As of September 2026, a used Cadillac CT6 typically lists for $23,232 in the US. Depending on model year, typical asking prices run from $18,798 for a 2016 to $36,995 for a 2020 — every figure below is a national median of 396 live listings, not a book value, and the CT6 steps down a median 19.7% 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 | $36,995 | $24,937 – $64,431 | 67,761 mi | 17–21 MPG | — | 41 |
| 2019 | $29,713 | $19,751 – $45,294 | 80,852 mi | 17–28 MPG | — | 62 |
| 2018 | $23,232 | $17,794 – $31,008 | 87,741 mi | 21–25 MPG | — | 100 |
| 2017 | $18,975 | $13,995 – $23,985 | 96,146 mi | 21–26 MPG | — | 105 |
| 2016 | $18,798 | $13,651 – $25,398 | 100,290 mi | 21–25 MPG | — | 88 |
“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 $18,798 (most between $13,651 and $25,398) with an average odometer of 100,290 miles. Before chasing the lowest price, weigh mileage against a one-year-newer car — each model year of age saves a median 19.7%, 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 $36,995 (most between $24,937 and $64,431).
Frequently asked questions
How much does a used Cadillac CT6 cost?
As of September 2026, a used Cadillac CT6 typically lists for $23,232 nationally. Depending on model year, typical prices run from $18,798 (2016) to $36,995 (2020), based on 396 live listings.
How much is a 2020 Cadillac CT6?
A used 2020 Cadillac CT6 typically lists for $36,995, with most asking prices between $24,937 and $64,431. Average odometer reading is 67,761 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 $18,798 — but compare its mileage (100,290 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 19.7% per model year of age — e.g. moving one year older typically saves about that share of the price.
How much is a used 2017 Cadillac CT6?
A used 2017 Cadillac CT6 typically lists for $18,975, with most asking prices between $13,995 and $23,985; average odometer is 96,146 miles (105 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.