2018 Cadillac CT6: recalls, fuel economy and safety ratings
EPA rates the 2018 Cadillac CT6 at 21–25 mpg combined across 4 versions. NHTSA lists 2 safety recalls and 12 owner complaints for this model year.
Safety recalls
2
EPA combined mpg
21–25
NHTSA overall rating
—
Recall file dated Oct 28, 2026 · EPA file dated Sep 29, 2026 · updated Oct 28, 2026, 7:36 AM EDT
NHTSA lists this vehicle as CT6 PLUG-IN HYBRID.
Check your own car: enter your 17-character VIN at nhtsa.gov/recalls to see open recalls for that exact vehicle, and contact a Cadillac dealer to schedule the repair — safety recall repairs are free. The list below covers the whole model year, so not every recall applies to every car.
2018 Cadillac CT6 recalls
NHTSA's recall file lists 2 safety recalls for the 2018 Cadillac CT6, newest first.
Seat belts: Rear/other
NHTSA 18V673000Reported Sep 26, 2018
Filed by
General Motors, LLC (manufacturer recall no. 18315)
Units affected
15,800 (estimate)
Problem
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."
Risk
If the child seat is not properly secured in the event of a crash, it can increase the risk of injury.
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.
General Motors, LLC (manufacturer recall no. 18228)
Components
Child seat: Latch strap; Seats: Mid/rear assembly
Units affected
22,043 (estimate)
Problem
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."
Risk
If the child seat cannot be attached correctly to the anchorage bar, there is an increased the risk of injury.
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.
Recall summaries are written by NHTSA from manufacturers' defect reports. Dates are when NHTSA received the report.
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2018 Cadillac CT6 fuel economy by version
EPA city/highway/combined estimates for each engine, transmission and drive combination; electric figures are in MPGe (miles per gallon equivalent). Annual fuel cost is EPA's estimate for 15,000 miles a year (55% city, 45% highway) at EPA's current fuel-price assumptions; your cost will vary.
Source: FuelEconomy.gov (U.S. DOE and EPA), file dated Sep 29, 2026. Each version links to its FuelEconomy.gov record.
EPA estimates come from standardized lab tests so cars can be compared fairly; real-world mileage depends on speed, weather, load, tires and driving style.
2018 Cadillac CT6 crash-test ratings
NHTSA 5-Star Safety Ratings for the tested versions. More stars mean a lower chance of serious injury in that type of crash. Rollover risk is NHTSA's estimated chance of rolling over in a single-vehicle crash.
2018 Cadillac CT6 NHTSA 5-Star Safety Ratings
Tested vehicle
Overall
Frontal
Side
Rollover
Rollover risk
Forward collision warning
2018 Cadillac CT6 4DR AWD
Not rated
Not rated
Not rated
Not rated
—
Optional
2018 Cadillac CT6 4DR RWD
Not rated
Not rated
Not rated
Not rated
—
Optional
2018 Cadillac CT6 PHEV 4DR AWD
Not rated
Not rated
Not rated
Not rated
—
Standard
Source: NHTSA 5-Star Safety Ratings (New Car Assessment Program), checked Oct 26, 2026.
Star ratings compare vehicles of similar size and weight; a frontal rating for a large pickup is not directly comparable with one for a small car.
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2018 Cadillac CT6 owner complaints
Owners have filed 12 complaints with NHTSA about the 2018 Cadillac CT6, most recently on Aug 7, 2026. 0 mention a crash, 0 a fire, 0 injured people and 0 deaths. These are unverified reports; a complaint is not proof of a defect.
Most-cited components in 2018 Cadillac CT6 complaints
Component named in complaints
Mentions
Engine
4
Power train
4
Steering
3
Fuel/propulsion system
2
Electrical system
1
Electronic stability control (ESC)
1
Exterior lighting
1
Forward collision avoidance: Adaptive cruise control
1
Lane departure: Assist
1
Service brakes
1
Source: NHTSA consumer complaint files (complaints received since January 1, 2015). One complaint can name several components.
