This page provides a detailed comparison of the specifications for the Challenger MT645D and the Kubota M5970.
| Challenger MT645D | Kubota M5970 | |
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| Engine | ||
| Engine Manufacturer | Sisu Diesel | Kubota |
| Engine Model | - | D3200 |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | No. 2 Diesel | Diesel |
| Engine Induction Type | Turbocharged air-to-air intercooled | Naturally aspirated |
| Engine Cylinders | 6 | 3 |
| Engine Displacement Value | 514 ci (8.4 L) | 196 ci (3.2 L) |
| Engine Rated Rpm | 1950 | 2400 |
| Engine Power Output Value | 251 hp (187.0 kW) | 60 hp (44.4 kW) |
| Transmission | ||
| Transmission Type | CVT (combination of mechanical and hydrostatic sections) | Manual with dry disc clutch |
| Transmission Forward Gears | Infinite | 16 |
| Transmission Reverse Gears | Infinite | 4 |
| Dimensions | ||
| Length Value | 215.7 | 144 |
| Width Value | - | 72.8 |
| Operating Weight Value | 25365 lb (11505 kg) | 5049 lb (2290 kg) |
| Miscellaneous | ||
| Chassis | 4x4 | 4x4 MFWD 4WD |
| Drive Type | 4WD | 4WD |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
| Hitch Type | III | II/I and JISII/I |
| Hitch Category | III | Category 2 |
| Hitch Position | Rear | Rear |
| Hydraulic System Type | Closed Center Load Sensing (CCLS) | - |
| Operator Station Type | Cab | ROPS |
| Starter Type | Electric | Electric |
