2021 Honda Accord power train problems
13 owner complaints filed with NHTSA name the power train on the 2021 Honda Accord — 6% of all complaints for this model year.
What owners report
“Unable to use cruise control Unable to use lane control Unable to use tire pressure gauge Unable to use auto brake system Car shakes due to a sudden decrease in engine performance. Turbocharger issues Powertrain System issues ECM Failure”
filed Sep 2, 2026
“My car currently has displayed all lights on panel. Went to auto zone to have codes read, shows powertrain-description is code PO299 suggests turbocharger assembly. Safety is put at risk because all of the safety features are now disabled.”
filed Aug 18, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Power Train problems in other Accord years
| Year | Reports | Share |
|---|---|---|
| 2025 Accord | 5 | 6% |
| 2024 Accord | 6 | 4% |
| 2023 Accord | 3 | 4% |
| 2022 Accord | 8 | 3% |
| 2020 Accord | 16 | 4% |
| 2019 Accord | 43 | 6% |
| 2018 Accord | 136 | 7% |
| 2017 Accord | 33 | 6% |
| 2016 Accord | 29 | 5% |
| 2015 Accord | 40 | 7% |
| 2014 Accord | 64 | 7% |
| 2013 Accord | 109 | 8% |
Other reported problem areas on the 2021 Honda Accord
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.