How many miles to one gallon with a hummer?

The fuel efficiency of a Hummer varies by model, but generally, Hummers are known for their low miles per gallon (MPG). For example, the Hummer H1 typically averages around 10 to 12 MPG, while the Hummer H2 and H3 have slightly better ratings, around 12 to 16 MPG. Overall, you can expect a Hummer to get about 10 to 15 miles per gallon under normal driving conditions.