NHTSA lists 3 safety recalls and 11 owner complaints for the 2016 Cadillac CT6. Most complaints involve power train (6) and air bags (2). The EPA rates it 21–25 mpg combined.
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."
General Motors LLC (GM) is recalling certain 2016-2018 Cadillac CT6 vehicles. The inboard child seat anchorage bars may have had excess structural adhesive applied during assembly, which can interfere with the installation of a child seat. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 225, "Child Restraint Anchorage Systems."
General Motors LLC (GM) is recalling certain model year 2016 Cadillac CT6 vehicles manufactured July 21, 2016, to July 22, 2016. The bolt that connects the front passenger seat belt webbing to the seat's anchor plate may be missing. Without the bolt, the seat belt webbing may detach from the seat anchor.
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
“I am experiencing recurring transmission and drivability issues with my 2016 Cadillac CT6. 1.Rough Shifting: When shifting from park to reverse, the transmission shifts roughly, causing a noticeable jolt throughout the vehicle. 2.Fluid Leakage: I have observed fluid leaking from underneath the car when parked in my driveway. However, the leak is inconsistent—it disappears for a few days after rain or washing my driveway but then reappears under similar conditions. 3.Delayed Shifting: When accelerating from a stoplight, there is a delay before the transmission engages, causing hesitation before the car moves forward. 4.Automatic Start-Stop Issue: The vehicle has an automatic engine shut-off feature that activates when stopping at a light. When I take my foot off the brake, the engine restarts abruptly, causing a harsh jerk that shakes the entire car. This makes it feel like the transmission or another component is not engaging smoothly. 5.Check Engine Light Issue: The check engine light came on for a day, but before I could take it to a repair facility, it turned off on its own. Because of this, I was unable to retrieve any diagnostic codes. I am concerned these…”
“The contact's husband owned a 2016 Cadillac CT6. The contact stated that while her husband was making a left turn, the vehicle was struck on the front passenger side by another vehicle. The contact stated that her husbands air bag did not deploy. Medical attention was needed, and the contact's husband was transported to the hospital, where he succumbed to his injuries. A police report was taken. The vehicle was towed to the tow lot, where it was deemed a total loss. The contact stated that there were no additional injuries. The manufacturer was not yet notified of the incident. The failure mileage was unknown.”
“The turbo boost failed cylinder 2 ( after being repaired ) continues to show issues”
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 (S8), 4 cyl, 2.0 L, Turbo · Rear-Wheel Drive | 22 | 30 | 25 | $2,500 | 357 |
| CT6 AWD Auto (S8), 6 cyl, 3.0 L, Turbo · All-Wheel Drive | 18 | 26 | 21 | $3,700 | 424 |
| CT6 AWD Auto (S8), 6 cyl, 3.6 L · All-Wheel Drive | 18 | 27 | 21 | $2,950 | 414 |
| 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 |
3 safety recalls as of Nov 10, 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 11 complaints with NHTSA. The most-cited components are power train (6), air bags (2), engine (2). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
The EPA rates the 2016 Cadillac CT6 at 21–25 mpg combined, depending on engine and drivetrain (3 versions rated).