6 material differences · fewer than 12
Tractor oneClaas Ares 657 ATZ2005–2007No measured PTO figureTractor twoVALMET Mega 8150 HiTech1998–2004No measured PTO figure
Which should you choose?
We will not advise between these two machines, because they were not built in overlapping years (2005–2007; 1998–2004). 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
6 material differences · 5 fields identical or within 5%, which is not counted as material
| Field | Ares 657 ATZ | Mega 8150 HiTech | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 123.2 hp | 123.2 hp | — |
| Engine declared | — | VALMET 620 DSRE | — |
| Displacement declared | — | 6.59 L | — |
| Maximum torque declared | 350 lb·ft · 474.9 N·m | 363 lb·ft · 492 N·m | — |
| Transmission | |||
| Top speed declared | 24.9 mph · 40 km/h | 24.9–31.1 mph · 40–50 km/h | differs |
| Hydraulics & hitch | |||
| Pump flow declared | — | 20.4 gpm · 77.4 L/min | — |
| Pressure declared | 2,901 psi · 200 bar | 3,046 psi · 210 bar | — |
| Rear PTO speeds declared | 540/1000 rpm | 540/1000 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 11,089 lb · 5,030 kg | 12,324 lb · 5,590 kg | +11% Mega 8150 HiTech |
| Maximum permissible mass declared | 19,401 lb · 8,800 kg | 19,842 lb · 9,000 kg | — |
| Wheelbase declared | 111.0 in · 2,820 mm | 100.7 in · 2,558 mm | +10% Ares 657 ATZ |
| Length declared | 203.1 in · 5,160 mm | 190.6 in · 4,840 mm | +7% Ares 657 ATZ |
| Width declared | 100.4 in · 2,550 mm | 84.8–104.7 in · 2,155–2,660 mm | differs |
| Ground clearance declared | — | 17.3 in · 440 mm | — |
| Fuel tank declared | 264.2 qt · 250 L | 174.4 qt · 165.0 L | +52% Ares 657 ATZ |
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.
Claas Ares 657 ATZ sources
- Source: Traktorenlexikon, “Claas Ares 657 ATZ”
- Source: OECD test report 2294, 2005
VALMET Mega 8150 HiTech sources
- Source: Traktorenlexikon, “Valmet Mega-8150 HiTech”