Renault 551-4 (S) or Renault 551/551.4?
Which should you choose?
The data can’t decide this. Power at the PTO shaft cannot be compared: the 551-4 (S) has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the 551/551.4 has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft.
- The Renault 551-4 (S) suits heavy draft work (ploughing, cultivating) better on this data: 22% (535 kg / 1,179 lb) heavier and four-wheel drive.
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 | 551-4 (S) | 551/551.4 | Call |
|---|---|---|---|
| Which puts more power through the PTO shaft? | 40.5 kW (54.3 hp)Traktorenlexikon, “Renault 551-4 R7454” | 40.5 kW (54.3 hp)Traktorenlexikon, “Renault 551 R7451” | Not comparableNot comparable on power at the PTO shaft: the 551-4 (S) has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the 551/551.4 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 551-4 (S) and the 551/551.4. |
| Which pulls harder at the drawbar? | — | — | No figureNo call on drawbar power: no figure on record for the 551-4 (S) and the 551/551.4. |
| Which pumps more oil for implements? | 27.2 L/min (7.2 gpm)Traktorenlexikon, “Renault 551-4 R7454” | 27.2 L/min (7.2 gpm)Traktorenlexikon, “Renault 551 R7451” | EvenEven on hydraulic flow (both pump flow, as stated by the source): the difference is under the 10% threshold, too small to call. |
| Which lifts more on the three-point hitch? | 2,040 kg (4,497 lb)Traktorenlexikon, “Renault 551-4 R7454” | 2,040 kg (4,497 lb)Traktorenlexikon, “Renault 551 R7451” | EvenEven on three-point lift (both lift at the hitch ends, as stated by the source): the difference is under the 10% threshold, too small to call. |
| Which is heavier, for traction? | 2,945 kg (6,493 lb)Traktorenlexikon, “Renault 551-4 R7454” | 2,410 kg (5,313 lb)Traktorenlexikon, “Renault 551 R7451” | Ahead (a fact, not an advantage)The Renault 551-4 (S) is 22% heavier (535 kg / 1,179 lb) than the Renault 551/551.4 (both unladen weight, as stated by the source). |
| Which may carry more ballast and load? | — | — | No figureNo call on maximum permissible mass: no figure on record for the 551-4 (S) and the 551/551.4. |
| Which has the wider choice of gears? | 12Traktorenlexikon, “Renault 551-4 R7454” | 12Traktorenlexikon, “Renault 551 R7451” | EvenEven on forward gears (both forward gears, as stated by the source): the difference is under the 25% threshold, too small to call. |
| Which offers a creeper range? | YesTraktorenlexikon, “Renault 551-4 R7454” | YesTraktorenlexikon, “Renault 551 R7451” | EvenEven on a creeper range: every machine offers one. |
| Which is faster on the road? | 25 km/h (15.5 mph)Traktorenlexikon, “Renault 551-4 R7454” | 25 km/h (15.5 mph)Traktorenlexikon, “Renault 551 R7451” | 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? | 540 rpmTraktorenlexikon, “Renault 551-4 R7454” | 540 rpmTraktorenlexikon, “Renault 551 R7451” | EvenEven on PTO speeds: the same speeds (540 rpm). |
| Which PTO runs independently of the ground drive? | independentTraktorenlexikon, “Renault 551-4 R7454” | independentTraktorenlexikon, “Renault 551 R7451” | EvenEven on PTO independence: every PTO is independent. |
| Which drives on both axles? | 4WDTraktorenlexikon, “Renault 551-4 R7454” | 2WDTraktorenlexikon, “Renault 551 R7451” | AheadThe Renault 551-4 (S) is available with four-wheel drive; the Renault 551/551.4 is two-wheel drive (as stated by the sources). |
| Which is newer, and what about parts? | 1976–1986 | 1972–1986 | 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 Renault 551-4 (S) is 22% heavier (535 kg / 1,179 lb) than the Renault 551/551.4 (both unladen weight, as stated by the source).
- The Renault 551-4 (S) is available with four-wheel drive; the Renault 551/551.4 is two-wheel drive (as stated by the sources).
- Even on hydraulic flow (both pump flow, as stated by the source): the difference is under the 10% threshold, too small to call.
- Even on three-point lift (both lift at the hitch ends, 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 difference is under the 25% threshold, too small to call.
- Even on a creeper range: every machine offers one.
- 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 PTO speeds: the same speeds (540 rpm).
- Even on PTO independence: every PTO is independent.
- 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 551-4 (S) has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the 551/551.4 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 and maximum permissible mass.
← Every figure for both machines, side by side, with sources