Head to head
Hitachi ZX145W-6 vs Yanmar ViO57-6B
The Yanmar ViO57-6B has 230kW more power.
Last reviewed 13 September 2026
Key differences
- Engine power: the Yanmar ViO57-6B has 230kW more power.
Specifications side by side
| Hitachi ZX145W-6 | Yanmar ViO57-6B | |
|---|---|---|
| Operating weight | 15,000 - 17,200kg | 5485 kg |
| Engine power | 105kW (ISO14396) | 33,5 kW (at 2200 rpm) |
| Dig depth | 5,520 - 5,770mm | - |
| Breakout force | - | 41,9 kN |
| Fuel tank | - | 66 l |
Sources: Hitachi ZX145W-6, Yanmar ViO57-6B. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the ZX145W-6 if...
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
Buy or hire the ViO57-6B if...
- you want one that has 230kW more power
A 5 to 6 tonne zero-tail swing digger for civils and groundworks contractors on deeper trenching, pipe laying and loading. Hire fleets use it where space is tight but a bigger machine is needed.
Full ViO57-6B specifications →Common questions
What is the difference between the Hitachi ZX145W-6 and the Yanmar ViO57-6B?
The Yanmar ViO57-6B has 230kW more power. The Hitachi ZX145W-6 is a 14-17 tonne wheeled excavator; the Yanmar ViO57-6B is a 5.5 tonne zero-tail mini excavator.
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