Vehicle systems with the most owner complaints
Owner complaints grouped by the system named in the complaint, mapped through our component taxonomy.
- Engine & cooling96,084
- Steering14,978
- Airbags9,404
- Visibility7,734
- Body & structure6,360
- Seat belts1,793
- Suspension1,069
Methodology & limitations
- Included
- 2,548 vehicles across 37 makes and 328 models.
- Excluded
- Vehicles with no substantive safety dataset (excluded from the index entirely).
- Date range
- Model years 2015–2025.
- Sample size
- 7 ranked entities
- Calculation
- Sum of complaint counts per normalized component category, from each vehicle's top reported components.
- Data freshness
- Dataset last synchronized Aug 31, 2026.
Limitations
- Figures are raw counts. Verify the Vehicle holds no vehicle sales or registration data, so nothing here is normalized into a rate — a high-volume nameplate will tend to show more of everything.
- Coverage is limited to the 37 makes and model years 2015–2025 currently in the index, not the entire US fleet.
- Uses each vehicle's top reported components, not the full complaint text corpus, so it slightly under-counts long-tail categories.