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ChallengerModel A
Challenger MT645B
Agricultural
- power
- 235 hp
- displacement
- 449 ci
- Cylinders
- 6
- Forward gears
- Not recorded
Head to head · Agricultural
Agricultural

Utility
How they compare
MT645B is in the 86th percentile; TN85A is in the 27th · 1,028 models
MT645B is in the 79th percentile; TN85A is in the 41st · 1,083 models
MT645B is in the 74th percentile; TN85A is in the 31st · 1,130 models
MT645B is in the 82nd percentile; TN85A is in the 20th · 971 models
Full comparison
| Spec | Challenger MT645B | New Holland TN85A | Difference |
|---|---|---|---|
| Manufacturer | Challenger | New Holland | — |
| Model | MT645B | TN85A | — |
| Category | Agricultural | Utility | — |
| Spec | Challenger MT645B | New Holland TN85A | Difference |
|---|---|---|---|
| Manufacturer | Sisu | Iveco | — |
| Model | 74ETA | Not recorded | — |
| Power Output | 235hp | 80hp | ▲ MT645B+155 hp · +194% |
| Rated RPM | 2,200RPM | 2,300RPM | ▲ TN85A+100 RPM · +5% |
| Cylinders | 6 | 4 | ▲ MT645B+2 · +50% |
| Displacement | 449ci | 274ci | ▲ MT645B+175 ci · +64% |
| Bore | 4.3in | 4.1in | ▲ MT645B+0.2 in · +5% |
| Stroke | 5.3in | 5.2in | ▲ MT645B+0.1 in · +2% |
| Spec | Challenger MT645B | New Holland TN85A | Difference |
|---|---|---|---|
| Type | continuously variable transmission (CVT) | Partially synchronized with mechanical shuttle | — |
| Spec | Challenger MT645B | New Holland TN85A | Difference |
|---|---|---|---|
| Length | 206in | 158in | ▲ MT645B+48 in · +30% |
| Width | 118in | 67.2in | ▲ MT645B+50.8 in · +76% |
| Height | 124in | 95.1in | ▲ MT645B+28.9 in · +30% |
| Operating Weight | 19,595lb | 6,008lb | ▲ MT645B+13,587 lb · +226% |
| Spec | Challenger MT645B | New Holland TN85A | Difference |
|---|---|---|---|
| System Type | Pressure Flow Compensated (PFC) | Open Center | — |
| Steering Type | Not recorded | Hydrostatic power | — |
| Spec | Challenger MT645B | New Holland TN85A | Difference |
|---|---|---|---|
| Hitch Type | Three-Point Hitch | Three-Point Hitch | Same |
| Hitch Category | III | II/I | — |
| Hitch Position | Rear | Rear | Same |
| Hitch Capacity | Not recorded | 3,968lb | — |
| Spec | Challenger MT645B | New Holland TN85A | Difference |
|---|---|---|---|
| Chassis Type | Not recorded | 4x2 2WD | — |
| Drive Type | Not recorded | 2WD | — |
| Steering Type | Not recorded | Hydrostatic power | — |
| Spec | Challenger MT645B | New Holland TN85A | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
| Spec | Challenger MT645B | New Holland TN85A | Difference |
|---|---|---|---|
| Coolant | 8.9gal | Not recorded | — |
| Spec | Challenger MT645B | New Holland TN85A | Difference |
|---|---|---|---|
| Type | Not recorded | Open (ROPS) | — |
Category context