According to user observations, the Hummer H2 generally gets around 10 or 11 miles per gallon. General Motors is not required to provide statistical mileage data due to the Hummer's gross vehicle weight rating, which is about double that of a regular vehicle.
According to multiple studies, the Hummer H2 has an average mileage between 9 and 15 miles per gallon. Due to the potential repercussions of such extremely low gas mileage on the environment, the Hummer brand has long been a popular target for environmentalists. It has also met with criticism for the length of its stopping distance, poor visibility and relatively limited internal space. It remains popular among fans, however, who favor its rugged appeal and formidable capacity in overcoming physical obstacles.