2025 Toyota Grand Highlander engine problems
11 owner complaints filed with NHTSA name the engine on the 2025 Toyota Grand Highlander — 15% of all complaints for this model year.
What owners report
“I continuously have issues accelerating from stop in my max hybrid. the issue is particularly worse when it is warm out. I press the gas and the RPMs drop really low and I barely move through the intersection for a few seconds. Once it finally registers after a number of seconds, the RPMs rev up…”
filed Aug 25, 2026
“This vehicle has just over 18,000 miles on it and is 14 months old. It has a manufacturer design defect that allows small stones or birds to hit and puncture the air conditioning condenser. It is a known defect and Toyota refuses to warranty their product, forcing the consumer to pay out of pocket…”
filed Jul 15, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in…
T-SB-0021-25 · Service Bulletin/Repair Instructions · issued Feb 10, 2025Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in…
T-SB-0021-25 · Service Bulletin/Repair Instructions · issued Feb 10, 2025
Engine problems in other Grand Highlander years
| Year | Reports | Share |
|---|---|---|
| 2026 Grand Highlander | 6 | 19% |
| 2024 Grand Highlander | 37 | 16% |
Other reported problem areas on the 2025 Toyota Grand Highlander
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.