2017 Cadillac CT6
The Verdict
Worst problem area
Transmission & Drivetrain
Transmission & Drivetrain leads by volume: 10 of 17 complaints (59%) mention it.
Complaints filed rose from 11 in 2016 to 17 in 2017.
Data last changed . Sources: NHTSA complaints and recalls, EPA fuel economy data. Methodology
Cost, Fuel Economy & Complaint History
| Category | 2016 | 2017 | 2018 | 2019 | vs. 2017 Large Cars |
|---|---|---|---|---|---|
| Annual fuel cost ($) | 2,500–3,700 | 2,950–3,700 | 2,950–3,700 | 2,750–4,550 | |
| Combined MPG | 21–25 | 21–26 | 21–25 | 17–28 | |
| City / Highway MPG | 18–22 / 26–30 | 18–23 / 26–30 | 18–23 / 26–30 | 14–24 / 25–34 | |
| CO₂ tailpipe (g/mi) | 357–424 | 359–424 | 360–424 | 317–521 | |
| Complaints filed | 11 | 17 | 9 | 16 | |
| Recalls issued | 3 | 1 | 0 | 4 | |
| Crash-involved complaints | 3 | 0 | 0 | 0 | |
| Fire-involved complaints | 0 | 0 | 0 | 0 | |
| Injuries reported | 2 | 0 | 0 | 0 | |
| Deaths reported | 1 | 0 | 0 | 0 | |
| Configurations compared | 3 | 3 | 3 | 4 |
Not compared: this database has no vehicle sales or registration figures, so a raw count mostly reflects how many were sold, not how safe the vehicle is.
Common questions
How many recalls does the 2017 Cadillac CT6 have?
1 NHTSA recall campaign as of Sep 16, 2026. Check your VIN with NHTSA to see whether one applies to your car.
What is the most common complaint about the 2017 Cadillac CT6?
Transmission & Drivetrain: 10 of 17 NHTSA complaints (59%) mention it.
What gas mileage does the 2017 Cadillac CT6 get?
EPA rates it 21–26 MPG combined.
How much does it cost to fuel a 2017 Cadillac CT6?
EPA estimates $2,950–$3,700 a year in fuel costs, using EPA's assumptions.
Similar Vehicles
EPA-Rated Configurations (4)
| Configuration | Transmission | Cylinders | Displacement | Drivetrain | Fuel Type | Vehicle Class | City | Highway | Combined | Annual Fuel Cost | CO₂ |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Configuration 1 | Automatic (S8) | 6 | 3.6L | All-Wheel Drive | Regular | Large Cars | 18 mpg (low) | 27 mpg | 21 mpg (low) | $2,950 (low) | 417 g/mi |
| Configuration 2 | Automatic (S8) | 6 | 3.0L | All-Wheel Drive | Premium | Large Cars | 18 mpg (low) | 26 mpg (low) | 21 mpg (low) | $3,700 (high) | 424 g/mi (high) |
| Configuration 3 | Automatic (S8) | 4 | 2.0L | Rear-Wheel Drive | Premium | Large Cars | 22 mpg | 30 mpg (high) | 25 mpg | $3,100 | 359 g/mi (low) |
| Configuration 4 | Automatic (variable gear ratios) | 4 | 2.0L | Rear-Wheel Drive | Premium and Electricity | Midsize Cars | 23 mpg (high) | 29 mpg | 26 mpg (high) | $3,000 | 144 g/mi |
Complaints by Category
| Category | Complaints | Crash-Involved | Fire-Involved | Injuries | Deaths |
|---|---|---|---|---|---|
| Engine | 1 | 0 | 0 | 0 | 0 |
| Transmission & Drivetrain | 10 | 0 | 0 | 0 | 0 |
| Fuel System | 1 | 0 | 0 | 0 | 0 |
| Electrical | 4 | 0 | 0 | 0 | 0 |
| Brakes | 2 | 0 | 0 | 0 | 0 |
| Steering | 1 | 0 | 0 | 0 | 0 |
| Suspension, Wheels & Tires | 2 | 0 | 0 | 0 | 0 |
| Airbags & Restraints | 0 | 0 | 0 | 0 | 0 |
| Driver Assistance & Speed Control | 3 | 0 | 0 | 0 | 0 |
| Body, Seats & Latches | 1 | 0 | 0 | 0 | 0 |
| Visibility & Lighting | 1 | 0 | 0 | 0 | 0 |
| Other | 1 | 0 | 0 | 0 | 0 |
A complaint that names more than one category is counted in each, so the rows can add up to more than the total number of complaints.
Recalls (1)
EXTERIOR LIGHTING; EXTERIOR LIGHTING:HEADLIGHTS · Campaign 21V759000 · Sep 30, 2021
Defect: General Motors, LLC (GM) is recalling certain 2016-2017 Cadillac CT6 vehicles. The Park/Position lights may be excessively bright. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."
Consequence: The excessive brightness may affect the vision of other drivers, increasing the risk of a crash.
Remedy: Dealers will install right and left side in-line headlight jumper harnesses, free of charge. Owner notification letters were mailed November 3, 2021. Owners may contact Cadillac customer service at 1-800-458-8006. GM's number for this recall is N162016079.