John Deere 644B vs John Deere 644D
Verdict: John Deere 644B vs John Deere 644D
The John Deere 644B and the John Deere 644D are both industrial tractors — here is how they stack up on the figures that matter. John Deere 644D leads on rated power with 165 hp against 160 hp. John Deere 644B is the lighter machine (12,746 kg vs 13,299 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. John Deere 644D holds more fuel (253.6 L vs 212.0 L) for longer stints between fills. John Deere 644D is the newer design (1985 vs 1974). In short: choose the John Deere 644D for outright pulling power, or the John Deere 644B if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.
Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.