Head to head
Caterpillar D3 vs Hitachi ZX145W-6
The Hitachi ZX145W-6 has 27kW more power.
Last reviewed 13 September 2026
Key differences
- Engine power: the Hitachi ZX145W-6 has 27kW more power.
Specifications side by side
| Caterpillar D3 | Hitachi ZX145W-6 | |
|---|---|---|
| Operating weight | 9362kg (20,640lb) | 15,000 - 17,200kg |
| Engine power | 77.6kW (104hp) | 105kW (ISO14396) |
| Blade capacity | 2.19m3, or 2.34m3 with LGP tracks | - |
| Engine | Cat C3.6 | - |
| Dig depth | - | 5,520 - 5,770mm |
Sources: Caterpillar D3, Hitachi ZX145W-6. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the D3 if...
Caterpillar's smallest crawler dozer, used for fine grading, landscaping and confined-site work where a full-size dozer won't fit. Common in UK plant hire fleets alongside mini excavators.
Listed by
- B & T Plant Hire - Gravesend
- B & T Plant Hire Ltd - Morden
Buy or hire the ZX145W-6 if...
- you want one that has 27kW more power
Suits municipal and utility contractors who need a mobile, road-going digger for drainage and reinstatement work spread across several sites in a day. The wheeled undercarriage trades some stability for speed between jobs.
Listed by
- McGovern Plant Hire - Hounslow, Cranford
Common questions
What is the difference between the Caterpillar D3 and the Hitachi ZX145W-6?
The Hitachi ZX145W-6 has 27kW more power. The Caterpillar D3 is a small crawler dozer; the Hitachi ZX145W-6 is a 14-17 tonne wheeled excavator.
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