8 material differences · fewer than 12
Tractor oneNuffield M-41948–1957No measured PTO figureTractor twoPorsche-Diesel L 3081958–1960No measured PTO figure
Which should you choose?
Read our verdict on the M-4 and the L 308 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
8 material differences · 4 fields identical or within 5%, which is not counted as material
| Field | M-4 | L 308 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 38.0 hp | 38 hp | — |
| Engine declared | MORRIS-COMMERCIAL 38 T/V/T | Porsche-Diesel F 308 | differs |
| Displacement declared | 3.77 L | 2.47 L | +53% M-4 |
| Maximum torque declared | 138 lb·ft · 187 N·m | 100 lb·ft · 136 N·m | +38% M-4 |
| Transmission | |||
| Top speed declared | 17.4 mph · 28 km/h | 12.4 mph · 20 km/h | +40% M-4 |
| Hydraulics & hitch | |||
| Pump flow declared | 7.2 gpm · 27.3 L/min | — | — |
| Rear PTO speeds declared | 540 rpm | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 4,546 lb · 2,062 kg | 3,660 lb · 1,660 kg | +24% M-4 |
| Maximum permissible mass declared | — | 5,952 lb · 2,700 kg | — |
| Wheelbase declared | 78.0 in · 1,981 mm | 78.7 in · 1,998 mm | — |
| Length declared | 121.5 in · 3,086 mm | 126.8 in · 3,220 mm | — |
| Width declared | 69.0 in · 1,753 mm | 62.8 in · 1,595 mm | +10% M-4 |
| Ground clearance declared | 17.0 in · 432 mm | 15.2 in · 385 mm | +12% M-4 |
| Turning radius, braked declared | — | 10.0 ft · 3.05 m | — |
| Fuel tank declared | 67.2 qt · 63.6 L | 48.6 qt · 46 L | +38% M-4 |
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.
Nuffield M-4 sources
Source
- Source: Traktorenlexikon, “Nuffield Universal M 4 / TVO (1948-1954”
Porsche-Diesel L 308 sources
Source
- Source: Traktorenlexikon, “Porsche-Diesel Super L308”
- Source: Traktorenlexikon, “Porsche-Diesel Super B308”