General Motors offers only one model of the all-new five-passenger 2006 Hummer H3, although many options and accessories are available. Base H3s sticker for $29,500 and come with a 220-horsepower inline five-cylinder engine displacing 3.5 liters. A five-speed manual transmission drives power to all four wheels; a four-speed automatic transmission is optional. Other standard amenities include power windows, locks, and mirrors; an electric rear window defogger, a self-dimming rearview mirror, a compass, an ambient temperature gauge, three 12-volt auxiliary power outlets, and a 60/40 split rear seat. Visual elements such as chrome interior accents, brushed trim plates, and a leather-wrapped steering wheel provide a refined and pleasant, upscale look on the inside.

Two option packages – dubbed Luxury and Adventure – add increased sophistication and capability to the H3. Checking the box for the Luxury treatment brings leather seats with front seat heaters and power adjustment, lighted vanity mirrors in the visors, a six-disc in-dash CD changer with seven Monsoon speakers, and carpeted floor mats all around. The Adventure Package enhances the vehicle's underside, with a 4.03:1 transfer case, a fully locking rear differential, shock absorbers tuned for off-roading, and 33-inch Bridgestone tires.

Other optional off-road elements include a wrap-around front brush guard made of one-inch thick tubular steel, rocker panel protectors, and both grille- and roof-mounted auxiliary lights. Tubular stainless steel frame-mounted assist steps help occupants climb in and out, or customers can opt for the black powder-coated flat aluminum steps instead. A chrome fuel door and a splash guard – both emblazoned with the H3 logo – are also available, as are a power sunroof, chrome wheels, a Trailering Package including a hitch and harness, and extra exterior chrome treatment for the mirrors and door handles.

The H3’s main competitors include the Jeep Grand Cherokee, Nissan Xterra, and Toyota 4Runner – all of which offer more power than the Hummer for about the same price.