12 material differences
Tractor oneFahr D 1811955–1958No measured PTO figureTractor twoFahr D 25 NH1953No measured PTO figure
Which should you choose?
Read our verdict on the D 181 and the D 25 NH → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
12 material differences · 3 fields identical or within 5%, which is not counted as material
| Field | D 181 | D 25 NH | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 23.6 hp | 24.7 hp | — |
| Engine declared | MWM AKD-12 Z or AKD-112 Z | KHD F2M 414 | differs |
| Displacement declared | 1.81 L | 2.20 L | +21% D 25 NH |
| Maximum torque declared | 66 lb·ft · 89 N·m | 88 lb·ft · 120 N·m | +35% D 25 NH |
| Transmission | |||
| Top speed declared | 8.0 mph · 12.8 km/h | 12.2 mph · 19.7 km/h | +54% D 25 NH |
| Hydraulics & hitch | |||
| Pressure declared | 3,129 psi · 216 bar | 3,129 psi · 216 bar | — |
| Rear PTO speeds declared | 600 rpm | 540 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 2,778 lb · 1,260 kg | 4,299 lb · 1,950 kg | +55% D 25 NH |
| Maximum permissible mass declared | 4,299 lb · 1,950 kg | 7,937 lb · 3,600 kg | +85% D 25 NH |
| Wheelbase declared | 68.4 in · 1,737 mm | 73.1 in · 1,856 mm | +7% D 25 NH |
| Length declared | 106.2 in · 2,697 mm | 120.9 in · 3,070 mm | +14% D 25 NH |
| Width declared | 42.2 in · 1,072 mm | 63.8 in · 1,620 mm | +51% D 25 NH |
| Ground clearance declared | 16.7 in · 425 mm | 17.5 in · 445 mm | — |
| Turning radius, braked declared | 9.4 ft · 2.85 m | 11.0 ft · 3.35 m | +18% D 25 NH |
| Fuel tank declared | 31.7 qt · 30 L | 54.9 qt · 52 L | +73% D 25 NH |
Height is not in this table. It is not one measurement: the sources measure it to different points — over the cab on some machines, over the steering wheel or the exhaust on others — and the same tractor measured two ways can differ by most of a metre. It appears here only when both machines' figures carry the point they were measured to and it is the same point, which is not the case for these two. Each machine's own page prints its height as its source gives it.
Fahr D 181 sources
Source
- Source: Traktorenlexikon, “Fahr D 181”
- Source: Traktorenlexikon, “Fahr D 180 H”
Fahr D 25 NH sources
Source
- Source: Traktorenlexikon, “Fahr D 25 NH”
- Source: Traktorenlexikon, “Fahr D 22”