2006 HUMMER H3 SUV Review | Edmunds.com


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Certified Pre-Owned (CPO) is a category of used car. Often late-model vehicles, they have been inspected, refurbished, if necessary, and are under warranty by the manufacturer.
HUMMER H3 Features and Specs

Features & Specs

  • Engine 3.5 L Inline 5-cylinder
  • Drivetrain Four Wheel Drive
  • Transmission 5-speed Manual
  • Horse Power 220 hp @ 5600 rpm
  • Fuel Economy 14/18 mpg
  • Bluetooth No
  • Navigation No
  • Heated Seats Yes

Review of the 2006 HUMMER H3

  • Though it possesses a promising combination of off-road capability and everyday comfort, the distinctive 2006 Hummer H3 is mainly let down by its lack of power.

  • Safety
  • Pros

    Rugged enough to take on the tough off-road trails, smooth highway ride, stable handling, quality interior with simple controls, comfortable seats.

  • Cons

    Underpowered five-cylinder engine, low tow rating, lousy visibility for shorter drivers, below-average cargo space.

  • What's New for 2006

    The 2006 Hummer H3 is an all-new midsize SUV built on the Colorado pickup platform.

Full 2006 HUMMER H3 Review

What's New for 2006

The 2006 Hummer H3 is an all-new midsize SUV built on the Colorado pickup platform.


Compared to the bad-boy H1 and H2, the 2006 Hummer H3 is downright approachable. It's a midsize SUV built on the Chevrolet Colorado/GMC Canyon pickup platform. Not only can you tackle two-track off-road trails in the H3 without wondering if you'll fit around the next bend, you also don't have to worry so much about flattening mailboxes while backing out of driveways, either.

The Hummer H3 shares only 10 to 15 percent of its components with the Colorado, among these its 220-hp, 3.5-liter, inline five-cylinder engine. Although noticeably smoother in this application, the engine is lugging around 700 extra pounds. Acceleration is fine around town, but highway passing maneuvers take planning. Throw in some elevation increases, and the H3 feels underpowered. This puts the new Hummer SUV at an immediate disadvantage alongside faster, mainstream SUVs like the Grand Cherokee and 4Runner that offer optional V8s.

However, the Hummer H3 redeems itself in other areas. It comes standard with a full-time four-wheel-drive system with a 2.64 reduction gear in 4 Lo. Pretty typical for a production SUV. However, there's an optional 4.03 transfer case that provides gearing so low you can creep down rocky slopes without using the brakes. As on Jeep's Wrangler Rubicon, the 4-to-1 transfer case is aimed at hard-core off-roaders who would ordinarily have to go to the aftermarket to get one. The H3 further bolsters its go-anywhere image with 9.1 inches of ground clearance, standard skid plates and optional 33-inch off-road tires.

We doubt many Grand Cherokee owners will give up Hemi power for an H3 with an inline five. But the otherwise well-rounded H3 is proof that Hummer SUVs clean up real good. If you're looking for a tough off-roader that seats five comfortably, the midsize 2006 Hummer H3 is worth a test-drive.

Body Styles, Trim Levels, and Options

The midsize, five-passenger Hummer H3 is offered in a single four-wheel-drive model with a handful of option packages. Standard equipment includes 32-inch Goodyear all-terrain tires, skid plates, dual-zone air conditioning, a six-speaker CD stereo, cruise control and power windows, mirrors and locks. Adding the Off-Road Suspension Package gets you a shorter-geared transfer case for better hill climbing and descending, a locking rear differential, 33-inch off-road tires and firmer suspension tuning. The Luxury Package adds leather upholstery, power-adjustable and heated front seats, and an MP3-compatible Monsoon stereo. Other extras include an in-dash CD changer, satellite radio, a tow hitch and a chrome appearance package.

Powertrains and Performance

The only engine available on the Hummer H3 is a 3.5-liter inline five. It makes 220 horsepower and 225 lb-ft of torque and routes its power to all four wheels through a standard five-speed manual transmission or optional four-speed automatic. As the H3 weighs almost 2.5 tons, acceleration can often seem sluggish. In our test of an automatic-equipped H3, it took 11.0 seconds to reach 60 mph. Towing capacity is rated at 4,500 pounds and EPA fuel economy estimates for the automatic are set at 16 city, 19 highway.


Four-wheel antilock disc brakes, traction control and the OnStar communications system are standard. Full-length side curtain airbags are optional, and stability control is standard on H3s equipped with the automatic transmission. The H3 has not yet been crash tested.

Interior Design and Special Features

Inside, the Hummer H3 has one of the cleanest layouts we've ever seen in a GM vehicle. There's even a little style, thanks to a two-tone decor, contrasting piping on the optional leather seats and slick metallic trim. Materials quality is well above the low-rent trim in the Colorado, and the standard cloth upholstery looks good and feels like it could take a beating. The seats are supportive, but don't expect a commanding view of the road unless you're tall due to the high cowl and short glass area. In back, there's enough leg- and foot room for the average-size adult to get comfortable. Cargo capacity is below average for this class, but a side-hinged cargo door provides easy access to the 29.5-cubic-foot bay (55.7 with the seats folded).

Driving Impressions

Acceleration is fine around town, but highway passing maneuvers take planning, especially with the automatic. Throw in some elevation increases, and this Hummer SUV feels underpowered. The ride is smooth and comfortable, however, and the H3 feels stable when going around turns. The steering is reassuringly firm at highway speeds without being annoying in the parking lot. Off the pavement, the smallest Hummer is basically unstoppable. With 9.1 inches of ground clearance, loads of wheel travel, aggressive approach and departure angles, oversized all-terrain tires and standard skid plates, the 2006 Hummer H3 can pretty much go wherever you want without taking damage. Class-leading off-road capability wouldn't be worth much if the H3 was a sloppy handler on pavement. And while there's no hiding its 4,700-pound curb weight in the corners, it feels surprisingly stable, with predictable body roll and a well-controlled back end.

What Others Are Saying

Customer Reviews

Hummer time

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Vehicle: 2006 HUMMER H3 4dr SUV 4WD (3.5L 5cyl 5M)

I bought a 06 h3 adventure package with 80k miles on it and was surprised at how well it rode and performed with the mileage it had. Every one gave me hell about having a hummer but I loved it. Driving it makes you feel like a kid driving a tonka toy. The Mpg's where average for its class 18-22 mixed driving. It was comfortable on short and long drives. It never gave me any issues and it never got me stuck off road. If your debating between an h3 or a wrangler, get a h3. You get more for the money and insurance is less. You get better Mpg's and a nice comfy ride when you're not plowing through the woods or mountains. It's a solid ride.

2006 adventure package - love

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Vehicle: 2006 HUMMER H3 4dr SUV 4WD (3.5L 5cyl 5M)

I've owned it for a few years now (did a great deal of research to ensure that I wasn't purchasing a lemon) and I love this car more and more the longer I own it. One of the commenters on here had a great point. Get it serviced at your Cadillac or GM dealership, and keep up the maintenance!! I've heard a few comments regarding the lack of power/acceleration due to the size of the engine. This thing isn't a sports car! As others have said, it will easily get up to over 100mph. However, you shouldn't expect to get there in 6 seconds - who buys an SUV with that in mind?? Great car, I'm keeping mine forever!!

6 of 6 people found this review helpful

American collectors item

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Vehicle: 2006 HUMMER H3 4dr SUV 4WD (3.5L 5cyl 5M)

I was by a bank that Hummers are investments as the demand for Hummers is huge.The H3 has been a great, fun, rugged,strong & qaulity.The engine has pep in town,but most of the power is torque for pulling & climbing in hard terrain.Most that complain about them either have not taken proper care nor servced at a Cadillac or other GM desler.I had to cut off road in terrain that big 4x4 trucks could not go in,the H3 went through with no problems without even having to use 4 wheel drive.H3 is heavy & is designed to basically go anywhere,it is not a Ferrai,it is a Hummer built to in the harshes environment & it delivers.Open speed the H3 has no problem cruising at 100 mph.It is just cool.

Giant piece of junk

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Vehicle: 2006 HUMMER H3 4dr SUV 4WD (3.5L 5cyl 5M)

Bought this pre-owned at 5 years old. Conveniently everything started going down the drain at that point. Stupid things would break like the door... couldn't open the driver door from the inside. Sunroof leaks, passenger will randomly get quite soaked. It seemed like every week something would go wrong. Key fob just doesn't work... tried changing the battery..nothing. One day I tried to go to work and the truck locked me in park! Couldn't move the vehicle! Extremely unreliable. One day hazard lights just turned on its own and wouldn't turn off. Can't even drive up hills without a hard time. No interior lights that turn on when door opens - stupid. Poor handling.

4 of 4 people found this review helpful

The true all american suv!

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Vehicle: 2006 HUMMER H3 4dr SUV 4WD (3.5L 5cyl 5M)

(Note mine is automatic,online drop box only gave one option.)The style & design of the H3 is a head turner,it is unique,rugged,&can practically go any place. IF YOU BUY ONE, ONLY SERVICE IT A GM DEALER LIKE CADILLAC THAT DEALS WITH ESCULADES,BUT STAY OUT OF OIL LUBE & TUNE SHOP.The H3 is a fun vehicle to drive,has the most powerful A/C & Heater I have ever had.It is well built & reliable. They are now becoming some what of collectors items where Hummer Owners Clubs are growing & it has been speculated to be one vehicle that will increase in value.

2 of 5 people found this review helpful

Never again!

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Vehicle: 2006 HUMMER H3 4dr SUV 4WD (3.5L 5cyl 5M)

My happiness last for about 3 months until the sunroof began to leak and hasn't stopped since. I have taken it in 5 times and each time they only want to replace the drain hose. I bought it preowned and learned after 2 years of ownership that the problem existed prior to purchase and it was never disclosed, now the warranty is up and they refuse to fix it. The leaks have caused stains on the seats, a foul odor, possible rust. It is now currently under investigation by GM. Not to mention all the other problems listed below: tire monitor unsteady alignment hood latch recall 2 new batteries electrical issues 2 a/c issues repaired rattles shocks have gone out and I only weight 175

Talk About The 2006 H3

2006 HUMMER H3 Discussions See all Started By

I have a 2006 H3 with Adventure package and have just clocked 96K on it. Loved it until I cracked the casing two weeks ago and had to replace the transmission with a refurbed GM unit. Of course my war...

Yes, The GM Employee Pricing is not eligible for the H3 (2006 model) but look at it this way....you still saved a lot of money over the MSRP and you actually are buying the H3 for approx. 1% BELOW inv...

Be warned that if you get a H3 2006 that there are big problems with defective cylinders. Mine at 53,000 mi and when I took it to the dealer with the problems I was having they told me it was the exh...

Gas Mileage


  • 14
  • cty
  • 18
  • highway
Calculate Yearly Fuel Costs
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