Head to head
Caterpillar D3 vs Kubota U50-5
The Caterpillar D3 is the bigger machine by 4,587kg and has 37kW more power.
Last reviewed 13 September 2026
Key differences
- Operating weight: the Caterpillar D3 is the bigger machine by 4,587kg.
- Engine power: the Caterpillar D3 has 37kW more power.
Specifications side by side
| Caterpillar D3 | Kubota U50-5 | |
|---|---|---|
| Operating weight | 9362kg (20,640lb) | 4,775kg |
| Engine power | 77.6kW (104hp) | 40.4kW |
| Blade capacity | 2.19m3, or 2.34m3 with LGP tracks | - |
| Engine | Cat C3.6 | - |
| Dig depth | - | 3,370mm |
Sources: Caterpillar D3, Kubota U50-5. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the D3 if...
- you want one that is the bigger machine by 4,587kg
- you want one that has 37kW more power
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 U50-5 if...
A mid-size mini excavator for groundworkers who need more reach and dig depth than the smaller Kubota models while still keeping a compact machine for site access. Suits drainage, footings and utility trenching.
Listed by
- McGovern Plant Hire - Hounslow, Cranford
- Standard Plant Hire - Keston
Common questions
What is the difference between the Caterpillar D3 and the Kubota U50-5?
The Caterpillar D3 is the bigger machine by 4,587kg and has 37kW more power. The Caterpillar D3 is a small crawler dozer; the Kubota U50-5 is a 4.8 tonne mini excavator.
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