Fiat 56-66S/56-66 DTS or Steyr 955 (a)?
Which should you choose?
The data can’t decide this. Power at the PTO shaft cannot be compared: the 56-66S/56-66 DTS has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the 955 (a) has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft.
- The Steyr 955 (a) suits loader and hydraulic implement work better on this data: 33% (11.3 L/min / 3.0 gpm) more hydraulic flow.
- The Steyr 955 (a) suits road haulage better on this data: 17% (650 kg / 1,433 lb) more maximum permissible mass.
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 | 56-66S/56-66 DTS | 955 (a) | Call |
|---|---|---|---|
| Which puts more power through the PTO shaft? | 40.5 kW (54.3 hp)Traktorenlexikon, “Fiatagri 56-66S/56-66 DTS” | 40.5 kW (54.3 hp)Traktorenlexikon, “Steyr 955” | Not comparableNot comparable on power at the PTO shaft: the 56-66S/56-66 DTS has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the 955 (a) 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 56-66S/56-66 DTS and the 955 (a). |
| Which pulls harder at the drawbar? | — | — | No figureNo call on drawbar power: no figure on record for the 56-66S/56-66 DTS and the 955 (a). |
| Which pumps more oil for implements? | 34.5 L/min (9.1 gpm)Traktorenlexikon, “Fiatagri 56-66S/56-66 DTS” | 45.8 L/min (12.1 gpm)Traktorenlexikon, “Steyr 955” | AheadThe Steyr 955 (a) has 33% more hydraulic flow (11.3 L/min / 3.0 gpm) than the Fiat 56-66S/56-66 DTS (both pump flow, as stated by the source). |
| Which lifts more on the three-point hitch? | 2,125 kg (4,685 lb)Traktorenlexikon, “Fiatagri 56-66S/56-66 DTS” | 2,320 kg (5,115 lb)Traktorenlexikon, “Steyr 955” | 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? | 2,125 kg (4,685 lb)Traktorenlexikon, “Fiatagri 56-66S/56-66 DTS” | 2,745 kg (6,052 lb)Traktorenlexikon, “Steyr 955” | Ahead (a fact, not an advantage)The Steyr 955 (a) is 29% heavier (620 kg / 1,367 lb) than the Fiat 56-66S/56-66 DTS (both unladen weight, as stated by the source). |
| Which may carry more ballast and load? | 3,850 kg (8,488 lb)Traktorenlexikon, “Fiatagri 56-66S/56-66 DTS” | 4,500 kg (9,921 lb)Traktorenlexikon, “Steyr 955” | AheadThe Steyr 955 (a) has 17% higher maximum permissible mass (650 kg / 1,433 lb) than the Fiat 56-66S/56-66 DTS (both maximum permissible mass, as stated by the source). |
| Which has the wider choice of gears? | 12 to 20Traktorenlexikon, “Fiatagri 56-66S/56-66 DTS” | 16Traktorenlexikon, “Steyr 955” | 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 56-66S/56-66 DTS and the 955 (a). |
| Which is faster on the road? | 30 km/h (18.6 mph) to 40 km/h (24.9 mph)Traktorenlexikon, “Fiatagri 56-66S/56-66 DTS” | 30 km/h (18.6 mph) to 40 km/h (24.9 mph)Traktorenlexikon, “Steyr 955” | EvenEven on top speed (both top speed forward, as stated by the source): the figures vary by configuration and the ranges overlap. |
| Which offers more PTO speeds? | 540 rpmTraktorenlexikon, “Fiatagri 56-66S/56-66 DTS” | 540/1000 rpmTraktorenlexikon, “Steyr 955” | AheadThe Steyr 955 (a) offers 1000 rpm at the PTO, which the Fiat 56-66S/56-66 DTS does not (as stated by the sources). |
| Which PTO runs independently of the ground drive? | independentTraktorenlexikon, “Fiatagri 56-66S/56-66 DTS” | — | No figureNo call on PTO independence: not stated for the 955 (a). |
| Which drives on both axles? | Two-wheel or four-wheel driveTraktorenlexikon, “Fiatagri 56-66S/56-66 DTS” | Two-wheel or four-wheel driveTraktorenlexikon, “Steyr 955” | EvenEven on drive: every machine is available with four-wheel drive. |
| Which is newer, and what about parts? | 1992–1995 | 1992–1997 | 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 Steyr 955 (a) has 33% more hydraulic flow (11.3 L/min / 3.0 gpm) than the Fiat 56-66S/56-66 DTS (both pump flow, as stated by the source).
- The Steyr 955 (a) is 29% heavier (620 kg / 1,367 lb) than the Fiat 56-66S/56-66 DTS (both unladen weight, as stated by the source).
- The Steyr 955 (a) has 17% higher maximum permissible mass (650 kg / 1,433 lb) than the Fiat 56-66S/56-66 DTS (both maximum permissible mass, as stated by the source).
- The Steyr 955 (a) offers 1000 rpm at the PTO, which the Fiat 56-66S/56-66 DTS does not (as stated by the sources).
- 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 figures vary by configuration and the ranges overlap.
- Even on top speed (both top speed forward, as stated by the source): the figures vary by configuration and the ranges overlap.
- Even on drive: every machine is available with four-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 56-66S/56-66 DTS has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the 955 (a) 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, a creeper range and PTO independence.
← Every figure for both machines, side by side, with sources