2006 Hummer H3 Dimensions, Size & Specs

The curb weight of the Hummer H3 varies between 2,132 kg and 2,206 kg (4,700 to 4,864 lbs), depending on trims and optional equipment. Its maximum permissible weight ranges from 2,654 kg to 2,728 kg (5,851 to 6,015 lbs). This weight range reflects the vehicle's robust build designed to accommodate rugged off-road conditions and additional cargo without compromising stability.

The H3 offers a generous ground clearance of 216 mm (8.5 inches), which is critical for effective off-roading. This elevated ride height allows the vehicle to navigate rough terrains, rocks, and obstacles with reduced risk of underbody damage. Its design focuses on delivering strong off-road capability while maintaining road comfort.

The Hummer H3 boasts a practical luggage capacity of 835 liters (29.5 cubic feet) with the rear seats upright, providing ample space for daily cargo and gear. Folding the rear seats down expands the capacity to an impressive 1,575 liters (55.6 cubic feet), making it versatile for larger loads, camping equipment, or other bulky items.

The standard configuration for the Hummer H3 includes 16-inch rims fitted with 265/75 R16 tires. These tires combine a robust size suitable for off-road traction with a comfortable ride on paved roads, providing a good balance between performance, durability, and control.

Most standard residential garages have dimensions around 6 meters (20 ft) in length and 2.4 to 3 meters (8 to 10 ft) in width. With a length of 4,742 mm (186.6 inches or about 15.5 ft), width of 1,897 mm (74.7 inches or 6.2 ft), and height up to 1,893 mm (74.5 inches or 6.2 ft), the H3 fits comfortably in a typical garage, leaving some room for opening doors and maneuvering, although the width might require cautious entry and exit.

Compared to the Hummer H2, which measures approximately 5,185 mm (204 inches) in length and 2,069 mm (81.4 inches) in width, the H3 is notably smaller. The H3 offers a more compact exterior—4,742 mm long and 1,897 mm wide—making it easier to handle and park in urban environments, while still retaining formidable off-road competency. This reduction in size made the H3 more accessible to a broader range of drivers, without straying too far from the characteristic rugged design of the Hummer brand.

The Hummer H3 is slightly larger than many midsize SUVs, with its length at 4,742 mm (186.6 inches) and height up to 1,893 mm (74.5 inches). Compared to rivals like the Jeep Grand Cherokee or Toyota 4Runner, the H3 has a higher ground clearance (216 mm/8.5 inches) and a more rugged design focused on off-road toughness. While its weight is on the heavier side at over 2,100 kg (around 4,700 lbs), it compensates with serious off-road hardware and capability, often making it a more specialized choice for enthusiasts who prioritize terrain versatility.

The 2006-2010 Hummer H3 is defined by its rugged off-road prowess, mid-size SUV dimensions, and iconic military-inspired styling. It comes equipped with advanced four-wheel-drive systems, solid axles for durability on rough terrain, and a strong V6 engine as standard with optional inline-5 in earlier years. It strikes a balance between urban usability and serious off-road capability, targeting buyers who want the Hummer look and function but in a more manageable size and price point than the larger H2.

Owning a Hummer H3 involves regular maintenance consistent with larger SUVs and off-road vehicles. This includes monitoring tire wear on 265/75 R16 tires, oil changes every 7,500 to 10,000 km, brake checks due to the vehicle’s weight (2,132-2,206 kg or 4,700-4,864 lbs), and inspecting suspension components regularly because of the rough terrains it may encounter. The size and off-road gearing mean fuel consumption is higher than average midsize SUVs, so budgeting for fuel is important. The H3's rugged construction generally supports longevity if maintained properly, but repairs can be costlier due to parts specific to the Hummer line.