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Comparison · Mini excavator

Caterpillar 303.5 CR vs Kubota KX040-4

The Kubota KX040-4 is about 18% heavier than the Caterpillar 303.5 CR (4,300 vs 3,650 kg), which usually means more stability and lifting capacity but higher transport weight.

The Kubota KX040-4 has about 67% more engine power (30 kW (40 hp) vs 18 kW (24 hp)).

Beyond the numbers, compare local dealer support, parts availability and resale value for Caterpillar and Kubota in your region: over the life of a machine they often matter more than small specification differences.

Caterpillar 303.5 CR
Caterpillar Caterpillar 303.5 CR
Orange Kubota compact excavator working in a city park
Kubota Kubota KX040-4
Operating weight 3,650 kg (8,000 lb)4,300 kg (9,500 lb)
Engine power 18 kW (24 hp)30 kW (40 hp)
Net power ≈17.9 kW (24 hp)—
Max. digging depth ≈3.1 m (10 ft 2 in)≈3.5 m (11 ft 5 in)
Engine power —≈30 kW (40 hp)
Engine —Kubota V2607 diesel
Tail swing —Minimal tail swing
Width —≈1.95 m (6 ft 5 in)
Travel speed —≈2.9 / 4.8 km/h (1.8 / 3.0 mph)
Strengths
  • + Stick steer travel
  • + Good stability for its size
  • + Legendary Kubota reliability and resale value
  • + Strong, smooth hydraulics for its class
  • + Comfortable, roomy cab
  • + Simple to maintain
Watch-outs
  • − Engine modest for heavy attachments
  • − Wider than 3-tonne class machines for tight access
  • − Needs a heavier trailer and tow vehicle than smaller minis
Full 303.5 CR reviewFull KX040-4 review

Specifications are typical figures for standard configurations and may be measured differently by each manufacturer (for example net vs gross power). Always confirm with the manufacturer or dealer. Build another comparison.