The Lanz Bulldog D7531 is a tractor rated at 25 hp — making it one of the more compact options in its class. It was manufactured from 1935 to 1952. Under the hood is a 1-cylinder diesel liquid-cooled engine, driving through two-wheel drive with a 3-speed gearbox. It is aimed at jobs of around up to 200 ac. The available specification table below shows both UK and US units.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
25 hp
Catalogue coverage
Variants represented
2
Richest spec table
22 rows
Recorded power
25 hp
Transmissions
6-speed
Production years
1935-1952
Verified variants
0
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Overview
ManufacturerLanzReference
Built in Mannheim, Baden-Württemberg, GermanyReference
Drive2WDReference
Variants
D75003-speedReference
D75066-speedReference
D75076-speed, with starterReference
D7511combination for both field and road operations, front-axle springsReference
7521traffic model for road operationsReference
7531express model with high-speed gearingReference
Engine
Lanz 4.7L 1-cyl dieselReference
Engine18.3 kWReference
LanzReference
dieselReference
1-cylinderReference
liquid-cooledReference
Displacement4.7 LReference
Bore/Stroke170 x 210 mmReference
Power18.3 kWReference
Rated RPM850Reference
Transmission
6-speedReference
TransmissiongearReference
Gears6 forwardReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.
