John Deere 3640 vs John Deere 6R 120

Verdict: John Deere 3640 vs John Deere 6R 120

The John Deere 3640 and the John Deere 6R 120 are both tractors — here is how they stack up on the figures that matter. John Deere 6R 120 leads on rated power with 118 hp against 117 hp. John Deere 6R 120 is the lighter machine (6,100 kg vs 10,564 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. John Deere 6R 120 is the newer design (2022 vs 1984). In short: choose the John Deere 6R 120 for outright pulling power, or the John Deere 3640 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.