2019 Cadillac CT6 reliability

Is it reliable?

NHTSA's file on the 2019 Cadillac CT6 holds 17 complaints after 8 years, a rate of 1 per year. That is fewer complaints per year than most CT6 years here — under the median of the other years, which is 1. NHTSA has 4 recalls on file, including Automatic transmission, ABS warning light, and Switch.

2016 Cadillac CT6 — Photo by Greg Gjerdingen from Willmar, USA, resized from the original. Wikimedia Commons CC BY 2.0

Complaints

Per year

Recalls

Years on the road

What owners report

The complaints owners file most often name Powertrain (14 of 17), then Service brakes (2) and Electrical system (1). The most filings arrived in 2025 (13 of 17).

Next to 2018 and 2020

The 2018 CT6 has 12 complaints, 1 per year, and the 2020 has 11 complaints, 1 per year. The 2019 has fewer complaints per year than the 2018. The 2019 has fewer complaints per year than the 2020.

The complaint rate is complaints filed in this year’s first 3 years on the road, divided by however many of those years have passed. Recalls are a separate count. The numbers are for the US-market 2019 Cadillac CT6. How we count. Data as of 2026-10-16.

Recalls (4)

Recall powertrain, automatic transmission 2025-03-06 · NHTSA campaign 25V148000

Summary 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.

Remedy Dealers will install transmission control module monitoring software, free of charge. Owner notification letters were mailed April 7, 2025. Owners may contact Cadillac customer service at 1-800-333-4223 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N242480630.

Recall hydraulic brakes, antilock and traction control, ABS warning light 2019-12-12 · NHTSA campaign 19V889000

Summary 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."

Remedy GM will notify owners, and dealers will reprogram the EBCM, free of charge. The recall began February 4, 2020. Owners may contact Chevrolet customer service at 1-800-222-1020, Cadillac customer service at 1-800-333-4223, or GMC customer service at 1-888-988-7267. GM's number for this recall is N192268090.

Recall exterior lighting, turn signal, switch 2019-02-21 · NHTSA campaign 19V117000

Summary 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."

Remedy GM has notified owners, and dealers will replace the turn-signal switch. The recall began March 11, 2019. Owners may contact Cadillac customer service at 1-800-458-8006. The Cadillac number for this recall is N182207090.

Recall seat belts, rear or other 2018-09-26 · NHTSA campaign 18V673000

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."

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.

Complaints by component (17 total)

Powertrain

Service brakes

Electrical system

Forward collision avoidance

Visibility and wipers

Crash-flagged

Fire-flagged

Injury reports

Death reports

Complaints filed per year

Excerpts from recent NHTSA complaint filings

"The contact owns a 2019 Cadillac CT6. The contact stated that while driving at an undisclosed speed, the transmission unexpectedly shifted hard, and the service warning light was illuminated. The contact stated that…"
Powertrain · filed 2026-09-15
"On July 22, 2025, at 20,245 miles, I brought my 2019 Cadillac CT6-V to an authorized dealer while still under factory warranty, reporting hard shifting during both acceleration and deceleration — the exact symptom…"
Powertrain · filed 2026-07-27
"The contact owns a 2019 Cadillac CT6. The contact stated that while driving approximately 75 MPH, the wheels locked up and the vehicle started swaying from side to side, and the vehicle decelerated. The contact was able…"
Powertrain · filed 2025-10-08
"The contact owns a 2019 Cadillac CT6. The contact received notification of NHTSA Campaign Number: 25V148000 (Power Train); however, the part to do the recall repair was not yet available. The contact stated while…"
Powertrain · filed 2025-07-03
"The contact owns a 2019 Cadillac CT6. The contact received notification of NHTSA Campaign Number: 25V148000 (Power Train); however, the part to do the recall repair was not yet available. The contact stated that the…"
Powertrain · filed 2025-06-24

NHTSA crash ratings

Version	Overall	Front	Side	Rollover
2019 Cadillac CT6 4DR AWD	Not rated	Not rated	Not rated	Not rated
2019 Cadillac CT6 4DR RWD	Not rated	Not rated	Not rated	Not rated

Stars are how this vehicle did in NHTSA crash tests. They are a safety result, separate from the complaint record. Not rated means that test was not run for this version.

Fuel economy

Trim	Engine	Transmission	Drive	City	Hwy	Combined	Annual fuel cost
CT6	2L, 4-cyl	Automatic (10-speed)	Rear-wheel drive	24	34	28 MPG	$2850
CT6 all-wheel drive	4.2L, 8-cyl	Automatic (10-speed)	All-wheel drive	14	25	17 MPG	$4700
CT6 all-wheel drive	3.6L, 6-cyl	Automatic (10-speed)	All-wheel drive	18	27	21 MPG	$3100
CT6 all-wheel drive	3L, 6-cyl	Automatic (10-speed)	All-wheel drive	18	26	21 MPG	$3800

Specs and fitment

First generation, 2016–2020

Body styles Sedan

Oil 5W-30 (all temps); 0W-30 below -29°C (2.0L turbo example) , 5 qt capacity

Tire size 235/50R18, 245/45R19, 245/40R20 (trim-dependent) front / 235/50R18, 245/45R19, 245/40R20, 265/45R18 (trim-dependent) rear

Known issues for this generation

Recall 18V-437 covers certain 2016-2018 Cadillac CT6 vehicles: excess structural adhesive on the inboard child-seat anchorage bars may prevent a child restraint from attaching properly, which can increase injury risk in a crash. Dealers remove excess adhesive and inspect the anchorage bars. Recall 21V-759 covers certain 2016-2017 CT6 vehicles: the park/position lights may be excessively bright, so the vehicles fail to comply with federal lighting standards; dealers replace the affected lamp assemblies or reprogram as specified in the campaign.

Compare

Previous year 2018 Cadillac CT6 Next year 2020 Cadillac CT6 See every Cadillac CT6 model year →

Frequently asked questions

Is the 2019 Cadillac CT6 reliable?

What are common problems with a 2019 Cadillac CT6?

The complaints owners file most often name Powertrain (14 of 17), then Service brakes (2) and Electrical system (1). The most filings arrived in 2025 (13 of 17).

Is the 2019 Cadillac CT6 more reliable than the years next to it?

The 2018 CT6 has 12 complaints, 1 per year, and the 2020 has 11 complaints, 1 per year. The 2019 has fewer complaints per year than the 2018. The 2019 has fewer complaints per year than the 2020.

Has the 2019 Cadillac CT6 been recalled?

The 2019 Cadillac CT6 has 4 recalls on file with NHTSA. See the recalls table on this page for dates, components, and remedies.

How many complaints have owners filed about the 2019 Cadillac CT6?

Owners have filed 17 complaints about the 2019 Cadillac CT6 with NHTSA.

What mpg does a 2019 Cadillac CT6 get?

EPA-rated combined fuel economy for the 2019 Cadillac CT6 is 21.8 MPG. See the fuel economy table on this page for city and highway figures by engine and transmission.

What oil does a Cadillac CT6 use?

Common specs cite 5W-30 (0W-30 below −29 °C on some turbo engines) with about 5 qt including filter; confirm for your engine code.

What tire sizes fit the Cadillac CT6?

OE sizes include 235/50R18, 245/45R19, and 245/40R20 with some trims using a wider rear; check the door placard.

What recalls affect the Cadillac CT6?

Recall 18V-437 covers certain 2016-2018 CT6 models for excess adhesive on inboard child-seat anchor bars; 21V-759 covers certain 2016-2017 CT6 vehicles for overly bright park/position lamps.