10 material differences · fewer than 12
Tractor oneFiat 550 (DT)1968–1978No measured PTO figureTractor twoSOMECA 615 (DT)1965–1968No measured PTO figure
Which should you choose?
Read our verdict on the 550 (DT) and the 615 (DT) → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
10 material differences · 5 fields identical or within 5%, which is not counted as material
| Field | 550 (DT) | 615 (DT) | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 51.2 hp | 51.2 hp | — |
| Engine declared | FIAT-IVECO 8045 | O.M.-FIAT CO 2D-45 | differs |
| Displacement declared | 3.12 L | 4.40 L | +41% 615 (DT) |
| Maximum torque declared | 137 lb·ft · 186 N·m | — | — |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 13.7 mph · 22 km/h | +14% 550 (DT) |
| Clutch declared | Dry FEREDO double clutch with separate PTO control | Pedal-operated two-stage dry FERODO double clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 5.8 gpm · 21.8 L/min | 5.5 gpm · 20.8 L/min | — |
| Pressure declared | 2,843 psi · 196 bar | 2,988 psi · 206 bar | — |
| Rear PTO speeds declared | 540 rpm | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 4,542 lb · 2,060 kg | 5,820 lb · 2,640 kg | +28% 615 (DT) |
| Wheelbase declared | 81.5 in · 2,070 mm | 83.9 in · 2,130 mm | — |
| Length declared | 135.0 in · 3,430 mm | 144.5 in · 3,670 mm | +7% 615 (DT) |
| Width declared | 66.5–95.3 in · 1,690–2,420 mm | 70.5–93.9 in · 1,790–2,385 mm | differs |
| Ground clearance declared | 16.5 in · 420 mm | 15.4 in · 390 mm | +8% 550 (DT) |
| Turning radius, braked declared | 10.3 ft · 3.13 m | 10.8 ft · 3.30 m | +5% 615 (DT) |
| Fuel tank declared | 57.1 qt · 54.0 L | 88.8 qt · 84.0 L | +56% 615 (DT) |
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.
Fiat 550 (DT) sources
- Source: Traktorenlexikon, “Fiat 550/550 DT”
SOMECA 615 (DT) sources
- Source: Traktorenlexikon, “Someca 615”
- Source: Traktorenlexikon, “Someca SOM 40 Super”