Deutz (KHD) D 40 vs Renault 421
12 material differences
Which should you choose?
We will not advise between these two machines, because they were not built in overlapping years (1958–1959; 1972–1977). 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
12 material differences · 3 fields identical or within 5%, which is not counted as material
| Field | D 40 | 421 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 34.3 hp | 41.4 hp | +21% 421 |
| Engine declared | KHD F3L 712 | MWM D 327-3 | differs |
| Displacement declared | 2.55 L | 2.83 L | +11% 421 |
| Maximum torque declared | 94 lb·ft · 127 N·m | 127 lb·ft · 172 N·m | +35% 421 |
| Transmission | |||
| Top speed declared | 12.4 mph · 20.0 km/h | 15.5 mph · 25 km/h | +25% 421 |
| Clutch declared | Pedal operated dry single-plate clutch by Fichtel & Sachs type G-22 Z | Dry VERTO double clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 5.0 gpm · 19.0 L/min | 6.8 gpm · 25.9 L/min | +36% 421 |
| Pressure declared | 1,707 psi · 118 bar | — | — |
| Three-point lift at ends declared | — | 4,497 lb · 2,040 kg | — |
| Rear PTO speeds declared | 555 rpm | 540 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 3,858 lb · 1,750 kg | 4,817 lb · 2,185 kg | +25% 421 |
| Wheelbase declared | 83.0 in · 2,109 mm | 78.0 in · 1,982 mm | +6% D 40 |
| Length declared | 131.9 in · 3,350 mm | 130.4 in · 3,312 mm | — |
| Width declared | 61.1 in · 1,552 mm | 66.1 in · 1,680 mm | +8% 421 |
| Height declared | 66.1 in · 1,680 mm | 93.3 in · 2,370 mm | +41% 421 |
| Ground clearance declared | 15.6 in · 395 mm | 15.7 in · 400 mm | — |
| Turning radius, braked declared | 10.5 ft · 3.20 m | 10.9 ft · 3.31 m | — |
| Fuel tank declared | 57.1 qt · 54 L | 50.7 qt · 48.0 L | +13% D 40 |
Deutz (KHD) D 40 sources
Source
- Source: Traktorenlexikon, “Deutz D 40”
- Source: Traktorenlexikon, “Deutz D 40.1”
- Source: Traktorenlexikon, “Deutz D 40 S”
Renault 421 sources
Source
- Source: Traktorenlexikon, “Renault 421 R7431”
- Source: Traktorenlexikon, “Renault 461 R7441”