CT6 (1st)
Engine Reliability Ratings
LGX
3.6L 6-cylView details
Complaint Breakdown
Known Issues
3.0TT
3.0L 6-cyl TurboView details
Complaint Breakdown
Known Issues
2 additional engine variants with fewer than 10 complaints not shown.
Vehicle-Level Issues
These issues affect the Cadillac CT6 regardless of engine variant.
Recalls (8)
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 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 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."
General Motors LLC (GM) is recalling certain 2020 Cadillac CT6 vehicles equipped with dealer-installed accessory 20" x 8.50" wheels (RPO 5JO or SHH). The tire pressure monitoring system (TPMS) sensors use the incorrect wireless radio frequency and cannot illuminate the low pressure warning light when the tire pressure drops below the recommended level. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 138, "Tire Pressure Monitoring Systems."
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 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 2018-2019 Cadillac CT6, Escalade ESV, Chevrolet Suburban, Volt, and GMC Yukon XL vehicles. Certain second-row or third-row rear seatbelts retractor assemblies may not automatically lock when the seatbelt is fully pulled out of the retractor, possibly preventing a child seat from being properly secured. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection."
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.
Alternatives in Full-Size Sedan
Frequently Asked Questions
What are the most common 2016-2020 Cadillac CT6 problems?
The 2016-2020 Cadillac CT6 has accumulated 111 NHTSA complaints. The most frequently reported problem areas are Transmission, Safety Systems, Electrical System. As with any used vehicle, a pre-purchase inspection and vehicle history report are recommended.
Which Cadillac CT6 engine is most reliable?
The 2016-2020 Cadillac CT6 was offered with 4 engine options. Based on NHTSA complaint data, the 3.6L 6-cyl has the lowest complaint density and is considered the most reliable choice for buyers.
Is the 2016-2020 Cadillac CT6 a good used car?
The 2016-2020 Cadillac CT6 can be a solid used car purchase depending on trim, mileage, and maintenance history. With 111 total NHTSA complaints on record, prospective buyers should review the known problem areas and check for open recalls before buying.
How many NHTSA complaints does the 2016-2020 Cadillac CT6 have?
The 2016-2020 Cadillac CT6 has 111 complaints filed with NHTSA as of our latest data pull. Complaint counts reflect owner-reported issues and do not necessarily indicate defects or safety risks on their own.
What recalls affect the 2016-2020 Cadillac CT6?
There are 8 NHTSA recalls affecting some 2016-2020 Cadillac CT6 vehicles. Recall status varies by VIN — check the NHTSA recall database at recalls.nhtsa.dot.gov with your specific VIN to confirm which campaigns apply.
What should I check before buying a used Cadillac CT6?
Before buying a used Cadillac CT6, verify all open recalls are completed via the NHTSA VIN lookup tool. Pay particular attention to Transmission, Safety Systems, Electrical System, which are the most commonly reported problem areas. Request maintenance records, have an independent mechanic inspect the vehicle, and run a vehicle history report to check for prior accidents or title issues.
Does the CT6 have NHTSA crash test ratings?
NHTSA has not published crash test ratings for the 2016-2020 Cadillac CT6. Not all vehicles are tested each year. For the latest NHTSA safety information, visit nhtsa.gov/ratings.
Data from NHTSA federal complaints database. 111 complaints analyzed. Data confidence: high. Last updated: 2026-04-07.