Research · 3 model years
Hummer H1Every model year, 1999–2003
Across the 3 model years we’ve synced, NHTSA lists 0 recall campaigns and 6 owner complaints for the Hummer H1. The 2003 model year has the most complaints (4).
NHTSA complaints per model year
Newer years have had less time on the road
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Oct 29, 2026