3 material differences · fewer than 12

Tractor oneDeutz (KHD) D 251959No measured PTO figureTractor twoDeutz (KHD) D 25.11960No measured PTO figure

Which should you choose?

We will not advise between these two machines, because they were not built in overlapping years (1959–1959; 1960–1960). The figures below are side by side so you can judge them yourself; each says whether it was measured, claimed or declared by its source.

Field by field

3 material differences · 12 fields identical or within 5%, which is not counted as material

Deutz (KHD) D 25 and Deutz (KHD) D 25.1, field by field
FieldD 25D 25.1Gap
Engine
Engine power, claimed claimed19.6 hp19.6 hp—
Engine declaredKHD F2L 712KHD F2L 712—
Displacement declared1.70 L1.70 L—
Maximum torque declared64 lb·ft · 86 N·m64 lb·ft · 86 N·m—
Transmission
Top speed declared12.4 mph · 20 km/h12.4 mph · 20 km/h—
Clutch declaredPedal-operated dry single-disc clutch from Fichtel & Sachs——
Hydraulics & hitch
Pump flow declared4.2 gpm · 16.0 L/min——
Pressure declared1,707 psi · 118 bar2,134 psi · 147 bar+25% D 25.1
Rear PTO speeds declared257/540 rpm257/540 rpm—
Weight & dimensions
Unladen weight declared2,921 lb · 1,325 kg2,921 lb · 1,325 kg—
Maximum permissible mass declared4,850 lb · 2,200 kg5,071 lb · 2,300 kg—
Wheelbase declared70.1 in · 1,780 mm74.8 in · 1,900 mm+7% D 25.1
Length declared115.7 in · 2,940 mm115.7 in · 2,940 mm—
Width declared62.6 in · 1,590 mm62.6 in · 1,590 mm—
Ground clearance declared14.2 in · 360 mm16.9 in · 430 mm+19% D 25.1
Turning radius, braked declared8.7 ft · 2.65 m8.5 ft · 2.60 m—
Fuel tank declared31.7 qt · 30 L31.7 qt · 30 L—

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.

Deutz (KHD) D 25 sources

Source
  • Source: Traktorenlexikon, “Deutz D 25”
  • Source: Traktorenlexikon, “Deutz D 25.1”
  • Source: Traktorenlexikon, “Deutz D 25 S”

Deutz (KHD) D 25.1 sources

Source
  • Source: Traktorenlexikon, “Deutz D 25.1”
  • Source: Traktorenlexikon, “Deutz D 25.1 S”