Challenger MT635B vs Challenger MT645

Verdict: Challenger MT635B vs Challenger MT645

The Challenger MT635B and the Challenger MT645 are both tractors — here is how they stack up on the figures that matter. Challenger MT635B leads on rated power with 185 hp against 181 hp. Challenger MT645 is the lighter machine (8,618 kg vs 18,308 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Challenger MT635B is the newer design (2005 vs 2002). In short: choose the Challenger MT635B for outright pulling power, or the Challenger MT645 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.