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CLAAS Ares 826 RZ

Series: Ares

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The Ares series from CLAAS includes the Ares 826 RZ. The engine delivers 181 hp (135 kW). The engine comes from John Deere. The engine is water-cooled. The model was built in France. The fuel is diesel. Its predecessor was the Renault Ares 826 RZ. The Ares series covers 29 models. Rated output within it ranges from 90 to 194 hp; the Ares 826 RZ sits at the top of that range with 181 hp. Its immediate neighbours are the Ares 826 below it with 175 hp and the Ares 836 above it with 194 hp. 856 CLAAS models across 54 series are on record.

CLAAS Ares – Tractor Series With Renault Roots, 2003 to 2007, with Four- and Six-Cylinder Engines, 66 to 143 kW/90 to 194 hp and Operating Weight from 5,010 to 6,450 kg

The Ares series was originally developed by Renault Agriculture and continued under the CLAAS name after CLAAS took over the Le Mans plant in 2003; the register lists models up to model year 2007. Output of the recorded models ranges from 66 to 143 kW, with models rated in horsepower spanning 90 to 194 hp, using four- and six-cylinder engines with displacement from 4,525 to 6,788 cm³.

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Recorded operating weight runs from 5,010 to 6,450 kg, wheelbase from 2,564 to 2,876 mm, and top speed of the listed models spans 40 to 40.1 km/h. The Ares family also included ATZ-badged versions with a narrower track width or adapted chassis for specialised applications.

Within the CLAAS line-up, the Ares sat between the smaller Celtis and the larger Axion series, aimed at arable farms with medium to higher power requirements. When buying a used Ares, the exact variant matters, as chassis, cab and hydraulic equipment differ between versions.

With rated outputs from 66 to 143 kW, the Ares fell within ISO 730 Category II to III for the rear three-point hitch, with a standard dual-speed power take-off at 540 and 1,000 revolutions per minute. The turbocharged John Deere diesel engines come from a manufacturer that remains active today and still supplies spare parts and service documentation for these model years.

Sources: SpecCodex register, model data: CLAAS Ares, CLAAS

Technical data

Engine

Engine makeJohn Deerecorrect
Fueldieselcorrect
Power181 hp (135 kW)correct
Coolingwater-cooledcorrect

Drivetrain and chassis

Driveselectable four-wheel drivecorrect

Origin and approval

PlantFrancecorrect

Other data

PredecessorRenault Ares 826 RZcorrect

Frequently asked questions

How much power does the CLAAS Ares 826 RZ have?

The CLAAS Ares 826 RZ delivers 181 hp.

What to check before buying

  • Check the hour meter against the service records — a replaced instrument is the most common gap.
  • Compare the data plate and chassis number with the papers.
  • Load the hydraulics and watch for sag.
  • Ask about parts availability for this build year — the running costs hang on it.

A general list for this type of machine — no substitute for an inspection or an appraiser.

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This page carries 10 individual figures for this model. They come from 2 recorded sources; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.

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Other models in this series

Sources: Tractor & Construction Plant Wiki (CC BY-SA 3.0) (retrieved August 2026) · Latvian open data portal (retrieved August 2026) · Values adopted and presented in our own form; changes from the source are possible. · How we check the data

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