With the U 423, U 429 and U 529 models, the Unimog implement carrier is available with modern MDEG engines (OM 934/OM 936, 4 and 6-cylinder) in Euro V and Euromot IV versions. In these versions, no diesel particulate filter, camshaft adjustment and HC metering is used. As a result, such things as the maintenance and life cycle costs are reduced. The general model variant of the three vehicle types corresponds to the basic concept of the current implement carrier model series.
Combined with emissions level Tier4f, approval as an agricultural tractor unit/implement carrier tractor unit in Germany is possible. Even with this approval, the vehicles can be used in municipal applications. The Unimog thus fulfils the emissions norms applicable to tractors.