John Deere 840 vs John Deere AH

Verdict: John Deere 840 vs John Deere AH

The John Deere 840 and the John Deere AH are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 34 hp. John Deere 840 is the lighter machine (2,269 kg vs 2,903 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. John Deere 840 is the newer design (1976 vs 1947). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.