GarageCalc What the data says
Power train accounts for about 23% of this year's Toyota Grand Highlander complaints. Complaints are spread across several areas, which reads more like normal ownership noise than a single defect.
The 2024 model year contributes 50 complaints (49%). No single model year dominates, so this looks like a line-wide pattern rather than one bad year.
Complaints are up sharply year over year, 51 to 102 (+100%), in a market that rose about 2%. Year-over-year movement is the most useful signal here: a model's sales are roughly stable from one year to the next, so a sharp rise means the per-vehicle complaint rate genuinely moved, not just that the model is popular.
How to read this
Raw complaint totals track how many Toyota Grand Highlanders are on the road as much as they track quality, so a high count on a best-seller is partly a volume story. Complaints are also self-reported: they capture what owners chose to file, not a controlled survey. Use these numbers to know where to look during a pre-purchase inspection and which recalls to check, not as a verdict on their own. Compare any car instantly in the Car Complaint Checker, or read the full 2026 study for the market-wide picture and methodology.
Frequently asked questions
Is the Toyota Grand Highlander reliable?
Complaint counts alone cannot answer that, because they track how many are on the road as much as build quality. What the 2026 data shows: 102 NHTSA complaints so far (rank 108 of 765 models), +100% year over year, with power train the most-cited area. Treat it as a starting point and cross-check recalls and a pre-purchase inspection for the specific vehicle.
What is the most common Toyota Grand Highlander complaint?
Power train: 23 of the 102 complaints filed in 2026 cite it (about 23%). Complaints are spread across several areas, which reads more like normal ownership noise than a single defect.
Which Toyota Grand Highlander model year has the most complaints?
The 2024 model year, with 50 of this year's 102 complaints (about 49%). No single model year dominates, so this looks like a line-wide pattern rather than one bad year.
Source: NHTSA Office of Defects Investigation complaint database, complaints received 2026-01-01..2026-08-24, compared with 2025-01-01..2025-08-24 (same window). Counted once per complaint ID, vehicles only. Aggregated data is available under CC BY 4.0 with a link to GarageCalc.