The 2018 Cadillac CT6 is associated with 12 official NHTSA owner defect complaints and 2 safety recall campaigns in the federal safety database. The most frequently reported component area is Powertrain, accounting for 3 reports (25% of total complaints). EPA testing covers 4 certified vehicle configurations spanning 2l 4-cyl, 3l 6-cyl, 3.6l 6-cyl, and 2L 4-Cyl plug-in hybrid configurations. Gasoline and hybrid variants deliver 21 to 25 MPG combined. Plug-in hybrid variants are rated up to 62 MPGe (25 MPG on gasoline) with up to 31 miles of electric driving range. Detailed NHTSA crash-test ratings are not available in the current AutoUtility dataset for this model year.
Key Data Findings
- • NHTSA Owner Complaints: 12 reports
- • Safety Recall Campaigns: 2 campaigns
- • Top Reported Defect Area: Powertrain (3 / 25%)
- • NHTSA Overall Safety Rating: Not rated by NHTSA
- • EPA Efficiency: 21–25 MPG (4 variants • PHEV up to 62 MPGe)
Data Note: Compiled directly from official NHTSA Office of Defects Investigation (ODI), NHTSA 5-Star Safety Ratings, and EPA FuelEconomy.gov databases.
| Variant | Engine | Drivetrain | Transmission | City | Highway | Combined | EV Range | Est. Annual Fuel Cost |
| CT6 | 2L 4-Cyl | Rear-Wheel Drive | Automatic (S8) | 22 MPG | 30 MPG | 25 MPG | — | $3,050 / yr |
| CT6 AWD | 3L 6-Cyl | All-Wheel Drive | Automatic (S8) | 18 MPG | 26 MPG | 21 MPG | — | $3,600 / yr |
| CT6 AWD | 3.6L 6-Cyl | All-Wheel Drive | Automatic (S8) | 18 MPG | 27 MPG | 21 MPG | — | $2,950 / yr |
| CT6 Plug-In Plug-in Hybrid | 2L 4-Cyl | Rear-Wheel Drive | Automatic (variable gear ratios) | 56 MPGe (23 MPG) | 71 MPGe (29 MPG) | 62 MPGe (25 MPG) | 31 mi EV (430 mi total) | $3,050 / yr |
Data Boundary Note: EPA specifications are shown by certified vehicle configuration. NHTSA complaints and recall totals are recorded at the model-year level across all configurations.
| Tested Drivetrain / Cab Variant | Overall Rating | Frontal Crash | Side Crash | Rollover Rating | Rollover Risk |
| 4DR AWD | Not Rated | Not Rated | Not Rated | Not Rated | — |
| PHEV 4DR AWD | Not Rated | Not Rated | Not Rated | Not Rated | — |
| 4DR RWD | Not Rated | Not Rated | Not Rated | Not Rated | — |
Active Driver Assistance Systems (NHTSA Recorded): Forward Collision Warning (FCW) is documented as Optional and Lane Departure Warning (LDW) is documented as Optional in official NHTSA records for tested 2018 Cadillac CT6 models.
View complete 2018 Cadillac CT6 crash test & safety breakdown →
Top Reported Problem Categories
Ranked by total consumer complaint submissions recorded by NHTSA
Data Attribution & Context: Complaints are self-reported by vehicle owners to NHTSA and represent unverified consumer submissions. Complaint volume does not equal a statistically controlled failure rate and is not adjusted for total vehicles sold or cumulative mileage driven.
View all 2018 Cadillac CT6 problems & component breakdown (10 categories) →
Affected Component: SEAT BELTS:REAR/OTHER
Defect Summary: 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."
Free Manufacturer Remedy: GM will notify owners, and dealers will inspect the rear seatbelt retractors and replace them if necessary, free of charge. The recall began November 7, 2018. Owners may contact Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GM's number for this recall is 18315.
Affected Component: SEATS:MID/REAR ASSEMBLY
Defect Summary: 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."
Free Manufacturer 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. Owners may contact Cadillac customer service at 1-800-458-8006. GM's number for this recall is 18228.
View all 2018 Cadillac CT6 recalls & campaign history (2 campaigns) →