Engines, Transmissions and Fuel Economy

• The 2007 Hummer H3 has a 3.7-liter, 242-horsepower in-line five-cylinder engine with 242 pounds-feet of torque. The standard transmission is a five-speed manual overdrive, although the option of getting a four-speed automatic was just as popular if not more. With a massive gas tank able to hold up to 23 gallons, H3s with automatic transmissions get up to 15 miles per gallon (mpg) for city driving and 19 mpg for highway driving. Those with manual gearboxes get slightly better gas mileage at 15/20 mpg.
  
  

Safety Features

• The 2007 Hummer H3 has power door locks, vehicle anti-theft system, anti-lock brakes, traction control and vehicle stability control system, driver and passenger airbags, and keyless entry. Some of them may come with side head curtain bags.
  
  

Interior Features

• With a cabin designed to seat at least five people, all trims of the 2007 Hummer H3 have air conditioning, power windows made of deep-tinted glass, tilt steering wheel, cruise control, tire inflation and pressure monitor, AM/FM/CD stereo system, car phone, telematic system and second row folding seat. Some 2007 H3s can be found with power sunroofs and, save for the base trim, navigational system. The Luxury and H3X trims have standard CD changers and subwoofers, leather steering wheel and seats, and driver and passenger power multiadjustable seats. The base and Adventure trims have either ebony or cashmere cloth interiors.
  
  

Exterior Features

• The 2007 Hummer H3 are four-door vehicles, fitted with 16-inch alloy wheels and possessing a full-size spare tire; the H3X has 18-inch alloys instead. Standard exterior features include fog lights, headlights that automatically turn on in daylight conditions, rear wiper and power side mirrors. Some might have a towing package, and only the H3X has a skid plate or sump guard to protect the vehicle's underside. The 2007 Hummer H3 comes in the following colors: Birch White, Black, Boulder Gray Metallic, Midnight Blue Metallic, Slate Blue Metallic, Victory Red and Yellow.
  
  

Price

• The original manufacturer's suggested retail price (MSRP) was $29,405 for the 2007 Hummer H3 base, $31,480 for the Adventure, $32,635 for the Luxury, and $37,545 for the H3X. As of 2010, a 2007 Hummer H3 can be purchased for a price in the low $20,000s.