Head to head
Caterpillar D3 vs Mecalac 9MDX
The Mecalac 9MDX has 476kW more power. The Caterpillar D3 is the bigger machine by 4,047kg.
Last reviewed 13 September 2026
Key differences
- Engine power: the Mecalac 9MDX has 476kW more power.
- Operating weight: the Caterpillar D3 is the bigger machine by 4,047kg.
Specifications side by side
| Caterpillar D3 | Mecalac 9MDX | |
|---|---|---|
| Operating weight | 9362kg (20,640lb) | 5315 kg (11718 lb) to 5715 kg (12600 lb) |
| Engine power | 77.6kW (104hp) | 55,4 kW (74 hp) |
| Blade capacity | 2.19m3, or 2.34m3 with LGP tracks | - |
| Engine | Cat C3.6 | - |
| Payload | - | 9000 kg |
| Travel speed | - | 25 km/h |
Sources: Caterpillar D3, Mecalac 9MDX. 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 4,047kg
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 9MDX if...
- you want one that has 476kW more power
A 9 tonne dumper with a fully enclosed ROPS/FOPS cab for bulk earthmoving, civils and road works on UK sites. Available with front tip or swivel skip.
Full 9MDX specifications →Common questions
What is the difference between the Caterpillar D3 and the Mecalac 9MDX?
The Mecalac 9MDX has 476kW more power. The Caterpillar D3 is the bigger machine by 4,047kg. The Caterpillar D3 is a small crawler dozer; the Mecalac 9MDX is a 9 tonne cabbed site dumper.
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