The Hummer H2 SUV wasn't particularly known for its fuel efficiency. Its design emphasized rugged off-road capabilities and a powerful presence which often came at the expense of fuel economy and the H2 was recognized for its bold and robust features rather than being a vehicle focused on maximizing fuel efficiency. Therefore, if fuel efficiency is a primary consideration, other, more fuel-efficient options may be more suitable. It is essential to keep in mind that the H2 was designed with a different emphasis prioritizing off-road adventures and a commanding road presence.