2020 Honda Odyssey engine problems
64 owner complaints filed with NHTSA name the engine on the 2020 Honda Odyssey — 15% of all complaints for this model year.
What owners report
“Vehicle: 2020 Honda Odyssey VIN: [XXX] Mileage at time of failure: 155413 Component: Engine — Connecting Rod BearingsDescription: My 2020 Honda Odyssey experienced a failure of the connecting rod bearings on 7/30/26, resulting in loud knocking noise. The failure was diagnosed by Luis Asturias at…”
filed Aug 3, 2026
“The vehicle is a 2020 Honda Odyssey. A recurring and dangerous safety failure occurs involving the Auto Idle-Stop system. With the system enabled and the vehicle at a complete stop, the engine shuts off as designed. However, upon depressing the brake pedal to resume driving, the engine severely…”
filed Jul 16, 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 | 5 | 22% |
| 2025 Odyssey | 151 | 52% |
| 2024 Odyssey | 29 | 35% |
| 2023 Odyssey | 11 | 12% |
| 2022 Odyssey | 15 | 12% |
| 2021 Odyssey | 23 | 18% |
| 2019 Odyssey | 128 | 14% |
| 2018 Odyssey | 183 | 19% |
| 2017 Odyssey | 10 | 26% |
| 2016 Odyssey | 91 | 34% |
| 2015 Odyssey | 53 | 26% |
| 2014 Odyssey | 59 | 19% |
Other reported problem areas on the 2020 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.