The Hummer H3 was introduced for the first time in 2006. The H3 is a sports utility vehicle which was built on the GMT345 body. The H3 derives its power from a 3.7Liter engine which can be bought with either a manual system of 5 gears or an automatic system with 4 gears. It has been provided with the Stability control system from General Motors. The Hummer is available in only one version, which comes with an all wheel drive system. The H3 can seat 5 passengers. and is equipped with 32 inch tires that can be used on all kinds of roads, air conditioning, a music system with a CD player and 6 speakers and windows locks and mirrors that can be operated with the touch of a button.

The new Hummer H3 is a sports utility vehicle that is classified as a midsize vehicle that comes in three versions, entry level, H3X and the Alpha. The first two versions derive their power from a 3.7 Liter engine, whereas the Alpha derives its power from a 5.3-liter V8 engine. The entry level and H3X are equipped with a manual system of 5 gears or an automatic system with 4 gears, while the Alpha is equipped with an automatic system with 4 gears. The entry level version is equipped with 16 inch alloy tires, air conditioning, entry into the vehicle does not need keys, all frills on the vehicle can be switched on or off with the touch of a button, a music system that has a CD player and a satellite radio. The H3X has a music system manufactured by Monsoon which has a CD player, seats made of leather and that are heated, and 18 inch tires. The Alpha has 16 inch tires and the same equipment as the H3X. All H3 versions are equipped with anti-lock disc brakes, traction control, and a system to make sure that the vehicle does not roll over and airbags. There is enough space for passengers to be comfortably seated and people sitting in the back have enough space to stretch their legs.