2017 Cadillac XT5 engine problems
23 owner complaints filed with NHTSA name the engine on the 2017 Cadillac XT5 — 19% of all complaints for this model year.
What owners report
“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
“Catalytic Converter on my 2017 XT5 had weld crack Oct 2025. Causing loud noise and exhaust to enter cabin of vehicle. This was the second convertor to do this. In 2023 I had to have the other catalytic convertor on this same vehicle changed out by the Sewell Cadillac dealership for the same…”
filed Oct 29, 2025
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.