NHTSA lists 4 safety recalls and 18 owner complaints for the 2019 Cadillac CT6. Most complaints involve power train (14) and service brakes (2). The EPA rates it 17–28 mpg combined.
General Motors LLC (GM) is recalling certain 2019-2020 Cadillac CT6, 2020-2021 CT4, CT5, and 2020-2022 Chevrolet Camaro vehicles equipped with a 10-speed transmission. The transmission may become damaged internally and cause the wheels to lock-up.
General Motors LLC (GM) is recalling certain 2019 Chevrolet Silverado 1500, Cadillac CT6, and GMC Sierra 1500 vehicles. Due to an Electronic Brake Control Module (EBCM) software error, the vehicle's Electronic Stability Control (ESC) and Antilock Brake System (ABS) may become disabled. Furthermore, if this specific error occurs, the vehicle's diagnostics will not illuminate the instrument cluster ESC and ABS malfunction warning lights. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 126, "Electronic Stability Control" and 135, "Light Vehicle Brake Systems."
General Motors LLC (GM) is recalling certain 2019 Cadillac CT6 vehicles. Rotation of the steering wheel will not automatically cancel the turn-signals from flashing. As such, these vehicles fail to comply with Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices and Associated Equipment."
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
“The contact owns a 2019 Cadillac CT6. The contact stated that while driving at an undisclosed speed, the transmission unexpectedly shifted hard, and the service warning light was illuminated. The contact stated that while accelerating and decelerating, the vehicle shuddered and hesitated. There was smoke coming from the vehicle. The vehicle was taken to the dealer on several occasions. The dealer diagnosed the vehicle with transmission failure. The contact was informed that the transmission needed to be replaced. The contact stated that the failure was associated with a previous transmission software update. The failure mileage was approximately 47,000.”
“ABS system error StabiliTrak error Cruise Control error Vehicle with <14,000 miles is exhibiting symptoms of earlier ABS recall.”
“I am submitting this safety defect complaint to the National Highway Traffic Safety Administration (NHTSA) regarding the unexpected failure of the front passenger head restraint in my Cadillac CT6-V. My vehicle recently underwent infotainment system repairs at Crest Cadillac, an authorized GM dealership. The passenger seat had not been occupied for several months. When a passenger recently sat in the seat, the head restraint unexpectedly fell over and became nonfunctional. There was no collision, impact, misuse, or known event explaining this failure. The vehicle is currently at an authorized GM dealership for evaluation. I am concerned that this failure may be associated with the recent dealership repairs or an underlying component defect. More concerning, two individuals in an online Cadillac CT6 owners’ group stated that this particular component fails more frequently than one would expect. These reports suggest a potentially recurring safety defect rather than an isolated incident. Federal Motor Vehicle Safety Standard No. 202a (49 CFR § 571.202a) establishes mandatory head restraint safety requirements intended to reduce neck injuries during collisions. A…”
Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.
| Version | City | Hwy | Comb. | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|
| CT6 Auto (S10), 4 cyl, 2.0 L, Turbo · Rear-Wheel Drive | 24 | 34 | 28 | $2,750 | 317 |
| CT6 AWD Auto (S10), 6 cyl, 3.6 L · All-Wheel Drive | 18 | 27 | 21 | $2,950 | 420 |
| CT6 AWD Auto (S10), 6 cyl, 3.0 L, Turbo · All-Wheel Drive | 18 | 26 | 21 | $3,700 | 429 |
| CT6 AWD Auto (S10), 8 cyl, 4.2 L, Turbo · All-Wheel Drive | 14 | 25 | 17 | $4,550 | 521 |
| Item | Miles | Time | Note |
|---|---|---|---|
| Engine oil & filter | 5,000–10,000 mi | 6–12 months | Follow the oil-life monitor if fitted |
| Tire rotation | 5,000–7,500 mi | Every oil change | Check pressure monthly |
| Engine air filter | 15,000–30,000 mi | 1–2 years | Sooner in dusty areas |
| Cabin air filter | 15,000–25,000 mi | 1–2 years | |
| Brake fluid | — | 2–3 years | Absorbs moisture over time |
| Coolant | 60,000–100,000 mi | 5–10 years | Long-life coolants last longer |
| Spark plugs | 60,000–100,000 mi | — | Iridium/platinum plugs at the long end |
| 12V battery | — | 3–5 years | Heat shortens battery life |
4 safety recalls as of Nov 9, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.
Owners filed 18 complaints with NHTSA. The most-cited components are power train (14), service brakes (2), seats (1). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
The EPA rates the 2019 Cadillac CT6 at 17–28 mpg combined, depending on engine and drivetrain (4 versions rated).