Fahr D 400 C or John Deere 620?
Which should you choose?
The data can’t decide this. Power at the PTO shaft cannot be compared: the D 400 C has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the 620 has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft.
- The John Deere 620 suits loader and hydraulic implement work better on this data: 82% (15.2 L/min / 4.0 gpm) more hydraulic flow.
Generated by rule set compare@4 from the figures on the side-by-side table, allowed by route “the same stated configuration”. Measured figures are compared only with measured, claimed only with claimed, at the same test condition; differences within each figure’s tolerance are not called.
What decides it, question by question?
| Question | D 400 C | 620 | Call |
|---|---|---|---|
| Which puts more power through the PTO shaft? | 32.9 kW (44.1 hp)Traktorenlexikon, “Fahr D 400 C” | 32.4 kW (43.4 hp)Traktorenlexikon, “John Deere Modell 620” | Not comparableNot comparable on power at the PTO shaft: the D 400 C has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the 620 has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft. |
| Which turns a litre of fuel into more work at the shaft? | — | — | No figureNo call on fuel efficiency at the shaft: no figure on record for the D 400 C and the 620. |
| Which pulls harder at the drawbar? | — | — | No figureNo call on drawbar power: no figure on record for the D 400 C and the 620. |
| Which pumps more oil for implements? | 18.5 L/min (4.9 gpm)Traktorenlexikon, “Fahr D 400 C” | 33.7 L/min (8.9 gpm)Traktorenlexikon, “John Deere Modell 620” | AheadThe John Deere 620 has 82% more hydraulic flow (15.2 L/min / 4.0 gpm) than the Fahr D 400 C (both pump flow, as stated by the source). |
| Which lifts more on the three-point hitch? | — | — | No figureNo call on three-point lift: no figure on record for the D 400 C and the 620. |
| Which is heavier, for traction? | 2,570 kg (5,666 lb)Traktorenlexikon, “Fahr D 400 C” | 2,657 kg (5,858 lb)Traktorenlexikon, “John Deere Modell 620” | EvenEven on weight (both unladen weight, as stated by the source): the difference is under the 10% threshold, too small to call. |
| Which may carry more ballast and load? | 4,000 kg (8,818 lb)Traktorenlexikon, “Fahr D 400 C” | — | No figureNo call on maximum permissible mass: no figure on record for the 620. |
| Which has the wider choice of gears? | 5 to 6Traktorenlexikon, “Fahr D 400 C” | 6Traktorenlexikon, “John Deere Modell 620” | EvenEven on forward gears (both forward gears, as stated by the source): the figures vary by configuration and the ranges overlap. |
| Which offers a creeper range? | — | — | No figureNo call on a creeper range: not stated for the D 400 C and the 620. |
| Which is faster on the road? | 20.8 km/h (12.9 mph) to 30.0 km/h (18.6 mph)Traktorenlexikon, “Fahr D 400 C” | 19 km/h (11.8 mph)Traktorenlexikon, “John Deere Modell 620” | EvenEven on top speed (both top speed forward, as stated by the source): the difference is under the 10% threshold, too small to call. |
| Which offers more PTO speeds? | 575 rpmTraktorenlexikon, “Fahr D 400 C” | 540 rpmTraktorenlexikon, “John Deere Modell 620” | No figureNo call on PTO speeds: no standard PTO speed stated for the D 400 C. |
| Which PTO runs independently of the ground drive? | dependent (stops with the clutch)Traktorenlexikon, “Fahr D 400 C” | — | No figureNo call on PTO independence: not stated for the 620. |
| Which drives on both axles? | 2WDTraktorenlexikon, “Fahr D 400 C” | 2WDTraktorenlexikon, “John Deere Modell 620” | EvenEven on drive: all two-wheel drive. |
| Which is newer, and what about parts? | 1954–1957 | 1956–1958 | EvenSame era: production began within 5 years of each other. We hold no parts-availability data, so there is no call on parts. |
What does this mean in plain words?
- The John Deere 620 has 82% more hydraulic flow (15.2 L/min / 4.0 gpm) than the Fahr D 400 C (both pump flow, as stated by the source).
- Even on weight (both unladen weight, as stated by the source): the difference is under the 10% threshold, too small to call.
- Even on forward gears (both forward gears, as stated by the source): the figures vary by configuration and the ranges overlap.
- Even on top speed (both top speed forward, as stated by the source): the difference is under the 10% threshold, too small to call.
- Even on drive: all two-wheel drive.
- Same era: production began within 5 years of each other. We hold no parts-availability data, so there is no call on parts.
- Not comparable on power at the PTO shaft: the D 400 C has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the 620 has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft.
- No figure on record for every machine, so no call on: fuel efficiency at the shaft, drawbar power, three-point lift, maximum permissible mass, a creeper range, PTO speeds and PTO independence.
← Every figure for both machines, side by side, with sources