Home›Cadillac›CT6›2018

Cadillac · Large car

2018 Cadillac CT6

Plug-in hybridGas

Large Cars
4 EPA-rated configurations
Data refreshed 2026-09-11

Safety Signal

84 / 100 from the NHTSA recall record

RecallsNHTSA campaigns2

Complaintsowner reports to NHTSA12

Crash ratingNHTSA overall—

Fuel economybest combined, EPA25 mpg

2020 2019 2018 2017 2016

The 2018 Cadillac CT6 is sold in the U.S. as a plug-in hybrid and gas large car with 4 EPA-rated configurations. The most efficient version, the CT6 Plug-In, is EPA-rated at 25 mpg combined. NHTSA lists 2 recall campaigns for this model year, which gives it a Safety Signal grade of B. Owners have filed 12 complaints, most often about the power train.

Specs & fuel economy

Source: EPA fueleconomy.gov

Configuration	Powertrain	Drive	Engine / motor	City	Hwy	Comb	Range	kWh/100mi	Charge (240V)	Annual fuel*
CT6 Plug-In	Plug-in hybrid	RWD	2.0L 4-cyl turbo + 59 and 61 kW 3-Phase AC	23	29	25 (39 MPGe blended)	31 mi electric	54	4.5 h	$3,100
CT6	Gas	RWD	2.0L 4-cyl turbo	22	30	25	—	—	—	$3,100
CT6 AWD	Gas	AWD	3.0L 6-cyl turbo	18	26	21	—	—	—	$3,700
CT6 AWD	Gas	AWD	3.6L 6-cyl	18	27	21	—	—	—	$2,950

*EPA estimate at 15,000 miles/year at EPA reference fuel and electricity prices. fueleconomy.gov record ids: 39767, 38976, 38644, 38940.

Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.

Recalls (2)

Source: NHTSA recall database

▲high

Seat Belts

18315

15,800 vehiclesPlug-in hybrid only

ProblemGeneral 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."RiskIf the child seat is not properly secured in the event of a crash, it can increase the risk of injury.FixGM 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.

NHTSA campaign 18V673000reported Sep 26, 2018General Motors LLC

▲high

Seats

18228

22,043 vehiclesPlug-in hybrid only

ProblemGeneral 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."RiskIf the child seat cannot be attached correctly to the anchorage bar, there is an increased the risk of injury.FixGM 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.

NHTSA campaign 18V437000reported Jun 28, 2018General Motors LLC

Owner complaints

Source: NHTSA complaint database

12complaints filed

0 involved a crash · 0 a fire · 0 injuries · 0 deaths reported

Filed per year: 2018: 1 · 2020: 2 · 2021: 2 · 2023: 2 · 2024: 1 · 2025: 1 · 2026: 3

Most-cited components

Power Train4

Engine4

Steering3

Fuel/Propulsion System2

Electrical System1

Electronic Stability Control (Esc)1

What owners describe

“During refueling the gas station pumping nozzle would shut off indicating a full gasoline fuel tank; but, the dash board fuel gage indicated the fuel was not full. Had to dribble in fuel to fill. Dealer Mechanic found: Crash roll over gasoline vent safety valve was stuck in the crashed roll over cut off state. No gas t…”Aug 7, 2026 · Fuel/Propulsion System · NHTSA owner report

“When vehicle was purchased new there was a slight bearing wear noise at the front driver side, which grew louder with years. Noise synchronized with tire rolling rpm. Replacing (my self) front trans axle, the brake pads, shaving rotors, & wheel hub bearing did not fix noise. Next; Dealer shop reported that the AWD fron…”Aug 7, 2026 · Power Train · NHTSA owner report

“Stuck Thermostat. Vehicle not achieving operating temperature in the correct time. ALL 3 of the people I know with CT-6's had the exact same issue this year.”Jun 23, 2026 · Engine · NHTSA owner report

Complaint counts are raw owner reports to NHTSA, not verified defects, and scale with how many were sold. Use them to spot patterns, not to rank.

Crash ratings

Source: NHTSA NCAP

NHTSA has not published 5-Star crash ratings for this model year.

Other CT6 model years

2020 Cadillac CT6

2 recalls · 11 complaints

2019 Cadillac CT6

4 recalls · 16 complaints

2017 Cadillac CT6

2 recalls · 26 complaints

2016 Cadillac CT6

3 recalls · 11 complaints

Sources & method

Safety Signal starts every model-year at 100 and subtracts points per open NHTSA recall campaign by severity: critical 15 (fire risk, park-outside or do-not-drive advisories), high 8 (brakes, steering, airbags, loss of drive power, structure, battery), moderate 6, minor 3 (software, labels, lighting fixed by an update). Floor 35. A ≥ 90, B ≥ 80, C ≥ 70, D ≥ 60, otherwise F. Complaint counts and NHTSA crash ratings are shown separately and are not blended into the grade.

EPA figures come from fueleconomy.gov vehicle records. Recalls, complaints, investigations and crash ratings come from NHTSA's public flat files, refreshed weekly.

JSON for this page · API