The Hummer H2 gets 10 mpg in the city and 13 mpg on the highway, according to tests performed by Car and Driver. Excessive fuel consumption is due to the vehicle's large 6.0-liter V8 engine.
During its production, the Hummer H2 appealed to customers despite its dismal fuel consumption. It was a unique vehicle that changed the way SUVs were made because it offered more power and comfort than any other vehicle on the road at the time of its introduction. However, as time went on and fuel prices rose, the Hummer soon lost its appeal. The last Hummer H2 was produced in 2009.