2017 Cadillac XT5 engine problems
24 owner complaints filed with NHTSA name the engine on the 2017 Cadillac XT5 — 20% of all complaints for this model year.
What owners report
“The thermostat quit working. I've researched this issue and have seen this is a very common issue usually occurring when the vehicle has somewhere between 45000 to 55000 miles.”
filed Aug 28, 2026
“I had P0128 Code with a warning message " Steering assist is reduced, drive with care". My local mechanic told I need a new thermostat. I have replaced my thermostat and it cost me 700 dollars out of pocket.”
filed Jul 8, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Engine problems in other XT5 years
| Year | Reports | Share |
|---|---|---|
| 2020 XT5 | 4 | 18% |
| 2019 XT5 | 6 | 19% |
| 2018 XT5 | 15 | 23% |
Other reported problem areas on the 2017 Cadillac XT5
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.