Hummer H3 GMT345 5.3 SUV
224 kW305 PS300 hp2005–2010
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- Power
- 224 kW 305 PS · 300 hp
- Kerb weight
- 2,130 kg
- Length
- 4,742 mm
- Displacement
- 5,300 cm³
The Hummer H3 GMT345 5.3 uses a 5.3-litre eight-cylinder engine rated at 224 kW (305 PS), in SUV form. In the H3 GMT345 5.3, power goes to all four wheels.
In a H3 GMT345 line-up of 3 versions, the H3 GMT345 5.3 tops the power chart, 37% above the entry 3.5 (164 kW). The H3 GMT345 5.3 is also the best on power-to-weight (143 PS per tonne). According to our catalog data, the H3 GMT345 5.3 weighs 2,130 kg. To see how it measures up, compare the H3 GMT345 5.3 with the Jeep Wrangler or the Mitsubishi Pajero.
What the figures favour in the H3 GMT345 5.3
- Most powerful version of the H3 GMT345: 224 kW (305 PS)
- Best power-to-weight in the range: 143 PS per tonne
Dimensions drawing
To scale · width without mirrors
Zoom in to read the measurements - or see the table below.
grid 500 mm1 ft Side view: dashed lines mark the axles
Engine
| Displacement | 5,300 cm³ 5.3 l · 323 cu in |
|---|---|
| Cylinders | 8 |
| Power | 224 kW 305 PS · 300 hp |
| Drive | All-wheel drive |
Dimensions and weight
| Length | 4,742 mm 186.7 in |
|---|---|
| Width | 2,172 mm 85.5 in |
| Height | 1,895 mm 74.6 in |
| Wheelbase | 2,842 mm 111.9 in |
| Kerb weight | 2,130 kg 4,696 lb |
Production
| Body type | SUV |
|---|---|
| Years | 2005–2010 |
| Generation | H3 GMT345 (2005–2010) |
Compare size All H3 GMT345 versions All Hummer spec sheets
Data sources
Data checked by an editor against the sources below.
Data: 10 of 25 fields · 2 sources · data changed 24 Oct 2026