John Deere 8400R vs John Deere 9R 390

Verdict: John Deere 8400R vs John Deere 9R 390

The John Deere 8400R and the John Deere 9R 390 are both tractors — here is how they stack up on the figures that matter. John Deere 8400R leads on rated power with 400 hp against 385 hp. John Deere 8400R is the lighter machine (14,828 kg vs 20,856 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. John Deere 9R 390 holds more fuel (1514.0 L vs 685.9 L) for longer stints between fills. John Deere 9R 390 is the newer design (2021 vs 2016). In short: choose the John Deere 8400R for outright pulling power, or the John Deere 9R 390 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.