2021 Honda Odyssey engine problems
26 owner complaints filed with NHTSA name the engine on the 2021 Honda Odyssey — 19% of all complaints for this model year.
What owners report
“Mileage: 121000 When stopped and the auto idle initiated, we have had numerous incidents where the van has shutoff and required a restart. More recently, when the auto idle initiates, the entire engine turns off and the van has no power(car won't restart, can't get the car into neutral, sliding…”
filed Sep 2, 2026
“The first problem I came across was Auto start. It always say temporary off because either I didn't press on the break hard enough or the Ac is running. Mostly it off saying it need to be charge and the company already put a battery in the car and it still say the same thing. The other thing that…”
filed Aug 26, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Owner Notification Letter - Under certain circumstances, after coming to a stop and the idle stop feature engaging, your vehicle may not automatically restart.
ONL6AX022025A · Other · issued Feb 19, 2025
Engine problems in other Odyssey years
| Year | Reports | Share |
|---|---|---|
| 2026 Odyssey | 13 | 36% |
| 2025 Odyssey | 193 | 52% |
| 2024 Odyssey | 37 | 36% |
| 2023 Odyssey | 13 | 13% |
| 2022 Odyssey | 15 | 11% |
| 2020 Odyssey | 66 | 14% |
| 2019 Odyssey | 133 | 14% |
| 2018 Odyssey | 188 | 19% |
| 2017 Odyssey | 10 | 26% |
| 2016 Odyssey | 92 | 34% |
| 2015 Odyssey | 53 | 26% |
| 2014 Odyssey | 59 | 19% |
Other reported problem areas on the 2021 Honda Odyssey
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.