Used 2018 Cadillac CT6 Consumer Reviews
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We have a limited number of reviews for the 2018 CT6, so we've included reviews for other years of the CT6 since its last redesign.
Fantastic voyage
Deborah, 04/15/2018
2018 Cadillac CT6 PLUG-IN 4dr Sedan (2.0L 4cyl Turbo gas/electric hybrid EVT)
50 of 50 people found this review helpful
I absolutely love this car. I have owned 6 cars and 3 SUV's and the CT6 hybrid is by far the best. The ride is incredible. The ride is so smooth it feels as though you are floating. The seats hug you as you drive and it feels as though they were made just to fit your body. The technology in this car is amazing and surprisingly easy to navigate.
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2018 3.6 AWD
Anguyen, 05/01/2018
2018 Cadillac CT6 Luxury 4dr Sedan AWD (3.6L 6cyl 8A)
36 of 36 people found this review helpful
I haven't experienced the jerky transmission shift problems at low speed. Perhaps because I also turn off the auto stop/start function which is unrefined (very similar to our 2016 Audi A6 3.0T). The driving dynamics, technology and value have been as advertised. But fit and fitness needs work (loose rear quarter rubber seal, climate control panel popping out). At least my dealership experience has been excellent. The car lacks the blistering speed of our 2016 Audi A6 but just as buttery smooth (perhaps slightly more than that A6). And the hushed cabin, technology and the way this large car handles a twisty road, on the standard steel suspension, are rather impressive.
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This would be the perfect car but ...
JK, 02/02/2018
2017 Cadillac CT6 Premium Luxury 4dr Sedan AWD (3.0L 6cyl Turbo 8A)
56 of 58 people found this review helpful
The 8 speed transmission on the CT6 is just plain awful. The first to second shift feels at times as if you have been hit from behind by another car. Other times it takes seconds for the car to shift from first to second and during that time the car has no power applied to the wheels. GM and the dealerships appear to do nothing about this after several complaints and tell me its normal (no...it's not normal for a $70+ car to shift like a 30 year old truck).
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Fighting with GM is not easy
m300michael, 11/14/2017
updated 11/20/2020
2017 Cadillac CT6 Premium Luxury 4dr Sedan AWD (3.0L 6cyl Turbo 8A)
55 of 57 people found this review helpful
I am having issue that involves the transmission on this vehicle. On occasion the transmission shifts/lurches so hard that it feels like the vehicle was struck from the rear. I did take the vehicle in for service and dealership stated that they upgraded the computer and the problem should not re-occur. Wrong! The same issue has occurred several more times and one time my grandkids were in the vehicle and it actually scared them when the vehicle lurched. Reading other reviews involving the Cadillac CT6 shows that I am not alone with this issue. I know that there is no perfect vehicle available on this planet but, what I fear is that the lurching may occur and cause an accident or transmission will not last long and will need to be replaced (hopefully, while under warranty). This transmission issue is still an issue, as I have taken the vehicle back to the dealership and the dealership cannot "duplicate" the hard shift. Interesting fact is that every single person that has been in my vehicle has felt this problem and I have had it occur before and after taking the vehicle for service. No more review necessary. GM repurchased this vehicle as of 11/15/2018 due to the issue with the transmission and their inability to either replace or repair it.
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irritating whineing noise
Jim, 09/18/2017
updated 03/21/2018
2017 Cadillac CT6 Luxury 4dr Sedan AWD (3.6L 6cyl 8A)
35 of 36 people found this review helpful
This is a very nice vehicle but it has a whining noise, especially between 30 and 40 miles per hour. The dealer can't seem to find what is causing it. If they can't soon find a fix, we are considering if the dealer will buy it back. The dealer thinks the whine is coming from the rea drive shaft. They have replaced the drive shaft three times, and the whine is beginning to start again. Since this the third time they have been unable to fix the problem, GM said to replace the vehicle. It also falls into the lemon law. I hope we can get them to give us a 2018 CT6. By the way, GM says this vehicle is only the third one in the entire CT6 fleet to have this problem. Lucky me I guess.
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