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Used car guide
Used Cadillac CT6: the years to buy and the years to skip
Every Cadillac CT6 from 2016 to 2020: what each year typically sells for (about $19,500 to $30,500), its crash rating, and whether it's a year to target or skip. The best bets are 2016–2020.
2016–2020 Cadillac CT6
A large, light flagship sedan with a smooth ride and early hands-free driver assistance.
Years to target: 2016–2020. It has an average reliability record.
| Year | Typical price | Verdict | Crash rating | Typical miles |
|---|---|---|---|---|
| 2016 | $19,500 | Target | Not rated | ~105,000 |
| 2017 | $21,500 | Target | Not rated | ~95,000 |
| 2018 | $24,000 | Target | Not rated | ~85,000 |
| 2019 | $27,000 | Target | Not rated | ~75,000 |
| 2020 | $30,500 | Target | Not rated | ~65,000 |
Worth knowing
- Depreciation is steep, making it a bargain, but parts for rarer versions like the plug-in hybrid can be hard to find.
The trim we'd park in our garage
Look for the Premium Luxury with the 3.0 liter twin-turbo V6: it adds rear-seat comforts and more driver aids over the Luxury, and the V6 offers the best power for the money.
On the test drive
Pay for an inspection at an independent shop that specializes in the brand. Get a pre-purchase inspection and a vehicle history report before you buy.
Safety tech
- Automatic emergency braking: standard from 2019, optional from 2016.
- Adaptive cruise control: optional from 2016, never standard in this generation.
- Blind-spot monitoring: standard from 2019.
Also worth comparing at this price
- Acura ILX 2018–2019 · $22,000–$24,500
- Lexus ES 2017–2018 · $23,000–$25,000
- Lexus IS 2017–2018 · $22,500–$25,000
Find one near you
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Prices are typical dealer and private asking prices from used listings, collected in September and October 2026, for an average-mileage car. Years with too few listings are estimated from nearby years. Crash ratings, recalls and owner complaint counts come from NHTSA public records. Always get a pre-purchase inspection and a vehicle history report before you buy. Spot something off? Let us know.