Cadillac CT6 years to avoid and best years
Newer Cadillac CT6 years have fewer owner complaints per year than the older ones. 2017 has the most complaints per year, at 3 (26 complaints). Among years old enough to compare, the fewest complaints per year are 2016 at 1 (from 11 complaints), 2019 at 1 (from 17 complaints), and 2018 at 1 (from 12 complaints). On the 2017 Cadillac CT6, 10 of 26 complaints name Powertrain.
Data as of .
Cadillac CT6 reliability by year
Each year is complaints filed in that year’s first 3 years on the road, divided by however many of those years have passed. A model year younger than 3 years is too early to compare, so it is left out of the years named as having the fewest or the most complaints. Recalls are a separate count. The numbers are for the US-market Cadillac CT6. How we count.
By model year
| Year | Per year on the road | Complaints | Recalls | Most-filed complaint | Avg. combined MPG |
|---|---|---|---|---|---|
| 2020 → | 1 | 11 | 2 | Powertrain | 19 |
| 2019 → Fewest | 1 | 17 | 4 | Powertrain | 21.8 |
| 2018 → Fewest | 1 | 12 | 2 | Powertrain | 23 |
| 2017 → Most | 3 | 26 | 2 | Powertrain | 23.3 |
| 2016 → Fewest | 1 | 11 | 3 | Powertrain | 22.3 |
Years with a → link have a full model-year page.
What owners file about
Generations
- Body styles
- Sedan
- Oil
- 5W-30 (all temps); 0W-30 below -29°C (2.0L turbo example) · 5 qt capacity
- Tire size
- 235/50R18, 245/45R19, 245/40R20 (trim-dependent) front / 235/50R18, 245/45R19, 245/40R20, 265/45R18 (trim-dependent) rear
Known issues for this generation
Recall 18V-437 covers certain 2016-2018 Cadillac CT6 vehicles: excess structural adhesive on the inboard child-seat anchorage bars may prevent a child restraint from attaching properly, which can increase injury risk in a crash. Dealers remove excess adhesive and inspect the anchorage bars. Recall 21V-759 covers certain 2016-2017 CT6 vehicles: the park/position lights may be excessively bright, so the vehicles fail to comply with federal lighting standards; dealers replace the affected lamp assemblies or reprogram as specified in the campaign.
Frequently asked questions
Which Cadillac CT6 years have fewer owner complaints?
Among years old enough to compare, the fewest complaints per year are 2016 at 1 (from 11 complaints), 2019 at 1 (from 17 complaints), and 2018 at 1 (from 12 complaints).
Which Cadillac CT6 year has the most owner complaints?
2017 has the most complaints per year, at 3 (26 complaints). On the 2017 Cadillac CT6, 10 of 26 complaints name Powertrain.
How do Cadillac CT6 owner complaints compare by year?
Newer Cadillac CT6 years have fewer owner complaints per year than the older ones.
What oil does a Cadillac CT6 use?
Common specs cite 5W-30 (0W-30 below −29 °C on some turbo engines) with about 5 qt including filter; confirm for your engine code.
What tire sizes fit the Cadillac CT6?
OE sizes include 235/50R18, 245/45R19, and 245/40R20 with some trims using a wider rear; check the door placard.
What recalls affect the Cadillac CT6?
Recall 18V-437 covers certain 2016-2018 CT6 models for excess adhesive on inboard child-seat anchor bars; 21V-759 covers certain 2016-2017 CT6 vehicles for overly bright park/position lamps.