2021 Honda Accord engine problems
30 owner complaints filed with NHTSA name the engine on the 2021 Honda Accord — 14% of all complaints for this model year.
What owners report
“I own a 2021 Honda Accord Hybrid. Shortly after purchasing the vehicle as a used vehicle in 2023, I began experiencing intermittent air conditioning performance. The A/C would gradually lose cooling capacity over time until it was no longer able to cool the cabin effectively. To temporarily restore…”
filed Jul 23, 2026
“First of all started with small coolant missing, later on I started noticing power loss and finally white smoke out the exhaust. Blown Head Gasket. Honda need to own up on defect engine design the ford did awhile back. Those slits between the cylinder was a big mistake. I myself is doing the…”
filed Jul 13, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Service Bulletin - Oil leak at timing chain tensioner inspection cover due to possible insufficient sealant adhesion on inspection cover.
A25-074 · Service Bulletin/Repair Instructions · issued Jul 29, 2025Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2024 Accord 1.5Ls, 2021-2024 Civics 1.5Ls, 2023-2024 CR-Vs 1.5Ls, and 2017 Fits with customer complaint of Check Engine Light (CEL) on…
ATI&12022024909 · Other · issued Dec 3, 2024Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2024 Accord 1.5Ls, 2021-2024 Civics 1.5Ls, 2023-2024 CR-Vs 1.5Ls, and 2017 Fits with customer complaint of Check Engine Light (CEL) on…
ATI&11052024902 · Other · issued Nov 5, 2024Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2022 Accord 1.5Ls (no 2.0L) & FHEVs, as well as 2017-2022 CR-V 1.5Ls (no 2.4L), & 2020-2022 CR-V FHEVs with a customer complaint of the…
ATI&08152024902 · Other · issued Aug 16, 2024Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2022 Accord 1.5Ls (no 2.0L) & FHEVs, as well as 2017-2022 CR-V 1.5Ls (no 2.4L), & 2020-2022 CR-V FHEVs with a customer complaint of the…
ATI&07262024902 · Other · issued Jul 26, 2024
Engine problems in other Accord years
| Year | Reports | Share |
|---|---|---|
| 2025 Accord | 2 | 3% |
| 2024 Accord | 10 | 8% |
| 2023 Accord | 12 | 15% |
| 2022 Accord | 29 | 13% |
| 2020 Accord | 67 | 19% |
| 2019 Accord | 163 | 25% |
| 2018 Accord | 521 | 29% |
| 2017 Accord | 62 | 12% |
| 2016 Accord | 44 | 7% |
| 2015 Accord | 105 | 18% |
| 2014 Accord | 179 | 18% |
| 2013 Accord | 179 | 13% |
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.