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Comparison · Bulldozer

Caterpillar D6 vs Caterpillar D8

The Caterpillar D8 is about 75% heavier than the Caterpillar D6 (39,000 vs 22,250 kg), which usually means more stability and lifting capacity but higher transport weight.

The Caterpillar D8 has about 65% more engine power (264 kW (354 hp) vs 160 kW (215 hp)).

Caterpillar D6T crawler dozer on a river project
Caterpillar Caterpillar D6
Caterpillar Caterpillar D8
Operating weight 22,250 kg (49,100 lb)39,000 kg (86,000 lb)
Engine power 160 kW (215 hp)264 kW (354 hp)
Net power ≈160 kW (215 hp)≈264 kW (354 hp)
Blade capacity up to ≈5.6 m³ (7.3 yd³), SU blade—
Engine Cat C9.3B—
Drive Powershift or electric drive (XE)—
Emissions EPA Tier 4 Final / EU Stage V—
Strengths
  • + Electric-drive D6 XE claims significantly lower fuel use
  • + Cat Grade and Assist features as factory options
  • + Huge dealer, parts and resale support
  • + High pushing and ripping power
  • + Long component life
Watch-outs
  • − Expensive, especially in XE form with technology
  • − Electric-drive complexity requires dealer expertise
  • − Heavy transport
Full D6 reviewFull D8 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.