2020 Buick Enclave engine problems
15 owner complaints filed with NHTSA name the engine on the 2020 Buick Enclave — 27% of all complaints for this model year.
What owners report
“Front exhaust pipe separated from its mounting bracket causing a consistent rattle. This condition is exactly as described in "N222385510 - Special Coverage Front Exhaust Pipe", released in May 2023. Exhaust components in this vehicle are materially the same as the covered 2021 vehicles and thus…”
filed Jul 13, 2026
“I am submitting a complaint regarding premature exhaust system failure on my 2020 Buick Enclave involving the front exhaust pipe/exhaust manifold/catalytic converter assembly. The issue appears very similar to the conditions described in GM Special Coverage programs N212356540 and N242445280…”
filed May 20, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Engine problems in other Enclave years
| Year | Reports | Share |
|---|---|---|
| 2025 Enclave | 4 | 11% |
| 2023 Enclave | 2 | 11% |
| 2021 Enclave | 2 | 8% |
| 2019 Enclave | 12 | 29% |
| 2018 Enclave | 13 | 20% |
| 2017 Enclave | 5 | 3% |
| 2016 Enclave | 8 | 6% |
| 2015 Enclave | 12 | 7% |
| 2014 Enclave | 17 | 6% |
| 2013 Enclave | 13 | 19% |
| 2012 Enclave | 24 | 18% |
| 2011 Enclave | 33 | 16% |
Other reported problem areas on the 2020 Buick Enclave
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.