Hummer H3 3.7 - L5 3653cc Manual 5 Speed
Urban: 15.4 MPG Extra Urban: 25.7 MPG Combined: 20.5 MPG	Road Tax £400 Tax Band: G (327g/km)

Real World MPG for the Hummer H3 3.7 - L5:

We currently don't have any real world MPG for the HUMMER H3 3.7 - L5. Why not be the first to add your findings by submitting your MPG figures?