Toyota Grand Highlander problems, by model year and system
350 complaints owners filed with NHTSA about the Toyota Grand Highlander 2024–2026, and the 1 system the record is deep on — transmission and drivetrain (67). Each system has a page across the years; 1 model-year page goes deeper still. Every figure is a linked federal record; none is a failure rate or a verdict on one car.
The systems the record is deep on
Source: NHTSA complaints, recalls, investigations and manufacturer communicationsToyota Grand Highlander complaints, year by system
Source: NHTSA complaint database| Model year | transmission and drivetrain |
|---|---|
| 2026 35 in all | — |
| 2025 75 in all | 15 |
| 2024 240 in all | 52 |
Complaints owners filed with NHTSA naming each system, per model year; a bold count links the year’s own page on that system. Counts scale with sales and with time on the road; nothing here is a rate, and NHTSA’s headings are coarse (“Power Train” is the transmission and the driveline).
Common questions
Source: NHTSA complaint databaseWhich Toyota Grand Highlander system draws the most complaints?
Transmission and drivetrain: 67 complaints across 3 model years, 19% of everything owners filed about the Toyota Grand Highlander. A count, not a rate — it says nothing about how many were sold.
Which Toyota Grand Highlander year has the most complaints?
2024 (240), 2025 (75), 2026 (35). Older years have had longer to collect them; the year pages show each year's share by system.