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ChallengerModel A
Challenger MT545
Row Crop
- power
- Not recorded
- displacement
- 365 ci
- Cylinders
- 6
- Forward gears
- 32
Head to head · Row Crop
Challenger MT545 vs Challenger MT645
ChallengerModel B
Challenger MT645
Row Crop
- power
- Not recorded
- displacement
- 449 ci
- Cylinders
- 6
- Forward gears
- 18
ChallengerChallenger MT545
vs
ChallengerChallenger MT645
How they compare
Headline specs vs. the whole Row Crop
Engine Displacement
▲ MT645 higher · +84 ci (+23%)MT545365 ci
MT645449 ci
Median Row Crop Tractor391 ci
MT545 is in the 43rd percentile; MT645 is in the 77th · 1,409 models
Cylinders
= Effectively tiedMT5456
MT6456
Median Row Crop Tractor6
MT545 is in the 50th percentile; MT645 is in the 50th · 1,417 models
Forward Gears
▲ MT545 higher · +14 (+78%)MT54532
MT64518
Median Row Crop Tractor16
MT545 is in the 91st percentile; MT645 is in the 61st · 1,200 models
Operating Weight
▲ MT645 higher · +8,938 lb (+89%)MT54510,082 lb
MT64519,020 lb
Median Row Crop Tractor12,307 lb
MT545 is in the 32nd percentile; MT645 is in the 81st · 1,350 models
MT545 (A)MT645 (B)Median Row Crop Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Challenger MT545 | Challenger MT645 | Difference |
|---|---|---|---|
| Manufacturer | Challenger | Challenger | Same |
| Model | MT545 | MT645 | — |
| Category | Row Crop | Row Crop | Same |
Engine
| Spec | Challenger MT545 | Challenger MT645 | Difference |
|---|---|---|---|
| Manufacturer | Caterpillar | Sisu/Valmet Diesel | — |
| Model | 3056 | Not recorded | — |
| Rated RPM | 2,200RPM | 2,200RPM | Same |
| Cylinders | 6 | 6 | Same |
| Displacement | 365ci | 449ci | ▲ MT645+84 ci · +23% |
| Bore | 3.9in | 4.3in | ▲ MT645+0.4 in · +10% |
| Stroke | 5in | 5.3in | ▲ MT645+0.3 in · +6% |
Transmission
| Spec | Challenger MT545 | Challenger MT645 | Difference |
|---|---|---|---|
| Type | Partial power shift | Selective gear fixed ratio with full range operator controlled powershift | — |
Dimensions & Weight
| Spec | Challenger MT545 | Challenger MT645 | Difference |
|---|---|---|---|
| Length | 179in | 203in | ▲ MT645+24 in · +13% |
| Width | 88in | 98.2in | ▲ MT645+10.2 in · +12% |
| Height | 109in | 121in | ▲ MT645+12 in · +11% |
| Operating Weight | 10,082lb | 19,020lb | ▲ MT645+8,938 lb · +89% |
Hydraulics
| Spec | Challenger MT545 | Challenger MT645 | Difference |
|---|---|---|---|
| System Type | Closed center pressure flow compensated (PFC) | Closed Center Pressure Flow Compensated (PFC) | Same |
| Steering Type | Power | Power Steering (Hydrostatic) | — |
Hitch & Towing
| Spec | Challenger MT545 | Challenger MT645 | Difference |
|---|---|---|---|
| Hitch Type | Three-Point Hitch | Not recorded | — |
| Hitch Category | II | III | — |
| Hitch Position | Rear | Rear | Same |
Chassis & Drive
| Spec | Challenger MT545 | Challenger MT645 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x4 MFWD 4WD | — |
| Drive Type | 2WD | Not recorded | — |
| Steering Type | Power | Power Steering (Hydrostatic) | — |
| Brake Type | Hydraulic wet disc | Not recorded | — |
Electrical
| Spec | Challenger MT545 | Challenger MT645 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric, 12 Volts | — |
Operator Station
| Spec | Challenger MT545 | Challenger MT645 | Difference |
|---|---|---|---|
| Type | Cab | Cab | Same |
Category context
Both models against the field
Engine Displacement
median 391 ciA · 43rd percentile (365 ci)B · 77th percentile (449 ci)
Cylinders
median 6A · 50th percentile (6)B · 50th percentile (6)
Forward Gears
median 16A · 91st percentile (32)B · 61st percentile (18)
Operating Weight
median 12,307 lbA · 32nd percentile (10,082 lb)B · 81st percentile (19,020 lb)
Length
median 180 inA · 50th percentile (179 in)B · 78th percentile (203 in)
A · MT545B · MT645Median Row Crop Tractor