Hummer H3 Reliability

Back in the early 2000s, Hummer was famous for manufacturing trucks and SUVs. The Hummer H3 is an off-road midsize SUV that continued from 2005 to 2010. The H3 was the smallest model in the lineup but still managed to beat H2 in looks, efficiency, and almost everything. Owners of Hummers believe it’s one of the most dependable vehicles on the market. 


Hummer H3 has many interesting features and despite being discontinued, it is still a good purchase for people who are keen on the H3’s looks and style. The H3 comes with a 3.7-liter LLR I5 engine with a 5-speed manual transmission. They mostly used Hummer H3 in the American Military to transport utilities and cargo, but it isn’t bulletproof. The mid-sized SUV is an off-road vehicle, which made it easier to provide utility services.


In terms of reliability, the H3 features a fair reputation. J.D. Power ranked the 2010 model of Hummer H3, a reliability score of 3 out of 5. While the older model also has good reliability features.

Hummer H3 isn’t perfect, no matter how reliable it is. The faulty or worn-out parts of this SUV can cause problems as the car gets older. Different People have reported different issues regarding transmission, leaking valves, A/C, and heater problems. However, no vehicle is with no issue. So, it depends on you how you maintain it.

  Chevrolet Aveo Reliability


Hummer vehicles were the perfect option for an off-roader with stable handling, and reliability. Various safety features like stability control, anti-lock wheel disc brakes, traction control, and tire-pressure monitoring helped the 2006 Hummer H3 to score a 5-star safety rating from NHTSA.


The H3 is still worth buying. They depreciate like most other vehicles. But they can hold their value because they are no longer being produced and are built to be extremely durable with a powerful engine and safe drive.

Maintenance and Repairing

Usually, the repair and maintenance costs depend on the condition of the vehicle. The same is the case with Hummer H3. However, for an average conditioned H3, the annual maintenance cost is around $620, which can also be reduced if you take good care of its condition.


How many seats are in the Hummer H3?    

The Hummer H3 is a car with 5 seats. The EPA Classification for this car is: 4-Wheel Drive    

What is the horsepower in a Hummer H3 and does it have a turbo?    

The Hummer H3 has 300 horsepower and 320 lb-ft of torque. The engine is a Gas/Ethanol V8 with a displacement of 5.3L/ The fuel system is: Electronic Fuel Injection.    

  Genesis G90 Reliability

What type of wheels does it have?    

Hummer H3 has 16 x 7.5 inch Aluminum Front Wheels and 16 x 7.5 inch Aluminum Rear Wheels.

How long does a Hummer H3 engine last?

Because Hummers are designed for harsh weather and extreme conditions, they can last a long time. A Hummer can usually last between 300,000 and 500,000 miles if it is properly maintained. Many people have gotten more than 300,000 miles from their H2s or H3s and plan to keep driving the truck until gasoline is cheap.

Which Hummer is most reliable?

The 2006 Alpha H1 is the most reliable Hummer. The vehicle has everything you need, including the Duramax 6.6-liter Turbodiesel engine, excellent AC-Heating and reinforced suspension.

What are common problems with Hummers?

  • Worn Valve Seats May Cause Engine Misfire. 
  • Check Engine Light Due to Gas Cap Issue. 
  • Reduced Power and Check Engine Light. 
  • Service transmission every 30,000 miles. 
  • Fuel Level Sensor Failure. 
  • Flush brake fluid every 60,000 miles. 
  • Flush cooling system every 60,000 miles.

Are Hummers worth buying?

The Hummer’s rugged military appearance and large size make it a great buy for those who love American culture. A Hummer will get you wherever you need to go, whether on the pavement or on the camping trails.

  BMW i8 Reliability

How deep can a Hummer H3 go in water?

24 inches deep ( 60 cm)

Which is better H2 or H3?

Both vehicles are strong and can handle off-road terrain. However, the H3 is more practical for most drivers. The H2 has a few extra standard luxury features.

Motor A2Z

We are a team of writers with the love of everything with an engine. The sound, the speed, the smell, and the feel. We try to give you the motor information you need.

Recent Posts