There are 2 owner-reported engine complaints for the 2007 Hummer H2in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TL* THE CONTACT OWNS A 2007 HUMMER H2. THE CONTACT STATED THAT TWO BOLTS SHEARED OFF THE EXHAUST MANIFOLD AND THE HEAD OF THE ENGINE, WHICH RESULTED IN A LEAK. THE CONTACT WAS CONCERNED OF THE POSSIBILITY OF A FIRE. THE CONTACT ALSO STATED THAT THE ENGINE WAS ABNORMALLY LOUD. THE CONTACT SPOKE WITH THE DEALER AND WAS TOLD TO TAKE THE VEHICLE IN TO HAVE THE BOLT AND EXHAUST MANIFOLD REPLACED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND THE CURRENT MILEAGES WERE 105,000. *TR
I HAVE A 2007 H2 HUMMER THAT WAS IN MY DRIVEWAY YESTERDAY AND MY NEIGHBOR NOTICED THAT IT WAS ON FIRE. IT WAS SITTING THERE WITH NO KEYS IN IT, TURNED OFF, NOT EVEN GONE ANYWHERE THE WHOLE DAY. IT LOOKS LIKE IT STARTED BEHIND THE DASH OR BACK OF THE ENGINE COMPARTMENT. IT IS COMPLETELY DESTROYED. DO YOU WANT THIS VEHICLE FOR YOUR INVESTIGATION? THANK GOD IT WASN'T IN MY GARAGE OR MY KIDS WEREN'T IN IT. *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026