Most common 2016 Cadillac CT6 problems
Share of the 11 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Cadillac CT6 complaints by model year
Best CT6 years: 2018. Years to avoid: 2019. Compare all years →
2016 Cadillac CT6 recalls (3)
Exterior lighting › Headlights
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."
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.
Child seat › Latch strap
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.
Remedy: GM will notify owners, and dealers will inspect, remove any excess adhesive, and apply anti-corrosion primer to the inboard child seat anchorage bars, free of charge. The recall began August 3, 2018.
Seat belts › Front › Webbing
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.
Remedy: GM will notify owners, and dealers will replace the existing front passenger seat belt webbing anchor bolt, or install a bolt if it is missing, free of charge. The recall began on September 24, 2016.
What 2016 Cadillac CT6 owners say
Transmission & drivetrain
The contact owns a 2016 Cadillac CT6. The contact stated that while in reverse, the vehicle accelerated inadvertently. The brake pedal was depressed to stop the vehicle. Additionally, the contact stated while driving between 30-45 MPH on several occasions, the gears shifted, and the vehicle jolted forward. Additionally, that contact stated that the vehicle was constantly shaking. The vehicle was taken to a dealer where the failure was first not able to be duplicated. The vehicle was taken to another dealer for the third time where it was diagnosed that an unknown harness needed to be replaced. The vehicle was repaired, but the failure recurred a month later. The manufacturer was notified of the failure and a complaint was filed. The failure mileage was approximately 19,000.
Approximately in November 2022, I was driving my 2016 Cadillac CT6. While operating at a normal speed of 40 mph, while in traffic the vehicle began to hesitate and a loss of power. The vehicle was towed to Waldorf Cadillac & Chevrolet. The vehicle was diagnosed with a transfer case issue. The vehicle in the repair shop for approximately 4 months. I retrieve my vehicle in February 2023, with a brand-new Transfer Case with a price tag of $2,200.00. On Thursday, August 3, 2023, I managed to drive the vehicle back to Waldorf Cadillac & Chevrolet to have to vehicle repaired. The vehicle is doing the same thing it was doing , when the vehicle was previously in the Repair Shop. The Technician informed me that Cadillac recommend the fluid in the transmission be changed to a high-performance fluid. This recommendation was issued to the dealers several months ago. …
2016 Cadillac CT6 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 2.0L 4-cyl turbo | 8-speed automatic | RWD | 22 / 30 / 25 |
| 3.0L 6-cyl turbo | 8-speed automatic | AWD | 18 / 26 / 21 |
| 3.6L 6-cyl | 8-speed automatic | AWD | 18 / 27 / 21 |
EPA ratings. Class: Large car.
Frequently asked questions
Is the 2016 Cadillac CT6 a good car?
There isn't enough complaint history for the CT6 to compare model years reliably. So far owners have filed 11 complaints with NHTSA.
What is the most common problem with the 2016 Cadillac CT6?
The transmission & drivetrain — 6 complaints, 55% of all complaints for this model year. Next are the engine & cooling (2) and air bags (2).
How many recalls does the 2016 Cadillac CT6 have?
There are 3 recalls for the 2016 Cadillac CT6, the most recent from September 29, 2021 (headlights). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Cadillac CT6?
The best years by complaints, compared at the same age, are 2018. Years to avoid or approach with caution: 2019. See the full Cadillac CT6 years comparison.
At what mileage do 2016 Cadillac CT6 problems happen?
The median mileage reported in complaints is about 17,000 miles; 80% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.