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MODIFICATION

Hummer H3 5.3 AT Specs — First Generation

The Hummer H3 5.3 AT is considered through routine daily use, focusing on how it manages ordinary journeys rather than special capability.

1 generation · SUV 5-doors

2005–2013

5.3 AT

Gasoline · Automatic · AWD

At a glance

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Specifications

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Performance & powertrain

Top speed
?

The highest speed a vehicle can sustain under manufacturer test conditions. Some cars are electronically limited below their mechanical potential. Glossary entry

Not provided
Engine type
Gasoline
Transmission
Automatic
Type of boost
?

A turbocharger or supercharger compresses the air entering the engine so a smaller engine can produce more power. Naturally aspirated engines draw air without a compressor. Glossary entry

No
Type of drive
?

Which wheels receive power: front-wheel drive, rear-wheel drive or all-wheel drive. All-wheel drive can send power to every wheel for extra traction. Glossary entry

AWD
Bore and stroke
?

The diameter of a cylinder (bore) and the distance the piston travels inside it (stroke). Together they determine the displacement of the engine. Glossary entry

Not provided
Engine capacity
?

The total volume swept by all pistons inside the cylinders, usually stated in cubic centimetres or litres. Larger displacement often means more power but higher consumption. Glossary entry

5328 cm³
Engine location
Front, longitudinal
Number of gears
?

How many fixed forward ratios a gearbox offers. More gears can improve economy and refinement; continuously variable transmissions have no fixed steps. Glossary entry

4
Maximum power
?

A unit of engine or motor output. One metric horsepower is about 0.735 kilowatts. Peak power is normally reached at high engine speed. Glossary entry

300 hp
Maximum power, kw
?

A unit of engine or motor output. One metric horsepower is about 0.735 kilowatts. Peak power is normally reached at high engine speed. Glossary entry

221 kW
Compression ratio
?

The ratio between the largest and smallest volume of a cylinder as the piston moves. Higher ratios improve efficiency but may require higher-octane fuel. Glossary entry

Not provided
Maximum power rpm
5200 rpm
Maximum torque N⋅m
434 N⋅m
Maximum torque rpm
4000 rpm
Acceleration to 100
?

The time a vehicle needs to reach 100 km/h from a standstill, a common shorthand for overall performance. Glossary entry

8.6 s
Engine power system
Distributed injection (multi-point)
Number of cylinders
8
Valves per cylinder
?

The number of intake and exhaust valves in each cylinder. Four valves per cylinder is common and helps the engine breathe at higher speeds. Glossary entry

Not provided
Cylinder arrangement
V-shaped
Maximum power ICE
Not provided
Maximum power ICE
Not provided

Energy & emissions

ECO class
Not provided
Battery power
Not provided
Fuel grade
92
Mild Hybrid
?

A car with a small electric motor and battery that assist the combustion engine and recover braking energy but cannot drive on electricity alone. Glossary entry

Not provided
Battery type
Not provided
CO2 emissions
?

The amount of carbon dioxide released per kilometre under a standardised test. Lower figures usually go hand in hand with lower fuel consumption. Glossary entry

Not provided
Full charge home
Not provided
Power consumption
Not provided
Fuel tank capacity
87 l
Full public charging time
Not provided
Driving range, maximum
?

The distance an electric or plug-in vehicle can travel on a full charge under a stated test cycle. Temperature, speed and load change the real result. Glossary entry

Not provided
Driving range, minimum
?

The distance an electric or plug-in vehicle can travel on a full charge under a stated test cycle. Temperature, speed and load change the real result. Glossary entry

Not provided
Fuel consumption city
Not provided
Average consumption
Not provided
Fuel consumption highway
Not provided

Dimensions & body

Doors number
5
Number of seats
5
Width
1989 mm
Height
1872 mm
Length
4782 mm
Body type
SUV 5-doors
Wheelbase
?

The distance between the centres of the front and rear wheels. A longer wheelbase usually gives more cabin space and a calmer ride; a shorter one helps agility and parking. Glossary entry

2842 mm
U-turn diameter
Not provided
Depth of the ford to be crossed
Not provided
Body style
SUV
Rear track width
?

The distance between the centres of the two wheels on the same axle. A wider track generally improves stability in corners. Glossary entry

1664 mm
Trunk volume max
1577 l
Trunk volume min
835 l
Front track width
?

The distance between the centres of the two wheels on the same axle. A wider track generally improves stability in corners. Glossary entry

1651 mm
Max weight
2654 kg
Curb weight
?

The weight of the vehicle with all standard equipment and fluids but without passengers or cargo. Glossary entry

Not provided
Ground clearance, maximum
?

The gap between the lowest point of the underbody and the road. More clearance helps on rough roads and steep driveway ramps. Glossary entry

Not provided
Ground clearance, minimum
?

The gap between the lowest point of the underbody and the road. More clearance helps on rough roads and steep driveway ramps. Glossary entry

230 mm

Identity & configuration

Vehicle class
J
Right-hand drive
No

Additional specifications

Stop
2013-03-31
Start
2005-04-01
Wheel size
Not provided
Rear brakes
Disc
Front brakes
Disc
Rear suspension
Dependent, leaf spring
Front suspension
Independent, torsion

Not provided means the source has no value. Zero remains zero. Units are shown as supplied; range test cycles are only stated when known.

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Units

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Engine and Transmission

In everyday traffic, smooth and predictable acceleration matters more than outright performance, helping a driver merge and keep pace without constant adjustment.

Drivetrain and Everyday Driving

When controls follow expected conventions, attention stays on the road because familiar actions like indicating or adjusting temperature become quick and automatic.

Body and Practicality

A regular need is stepping in and out while managing bags or a child; a convenient step-in height and an unobstructed door opening reduce strain during frequent stops.