The original Hummer H1 has four seats. More than four people can comfortably fit in this Hummer, but there are only for seat belts in the vehicle.
The Hummer H2 and H3 both have the option of third-row seating. The H2 and H3 both have enough space to seat between five and seven people comfortably, depending on the model. The Hummer H3 also comes in a compact version that seats less people but has a more stylish look and offers better gas mileage. The H3 was made in four different models, including the H3, H3T, H3X and the H3 Alpha.