Overview Model codes The new model codes point to a completely revised product range with the introduction of the "New Unimog Generation" including new engine technology and allow for differentiation from the old/existing model series. Model codes Old model code New model code Euro V Euro VI UNIMOG Implement carrier Euro V Implement carrier Euro VI U 400 U 423 Previously without code number for engine power U 4 23 Code number for size class (same as U 400) Code number for engine power (230 hp) 6 Introduction of the New Unimog Generation | Model Series 405 – This printout will not be recorded by the update service. Status: 03 / 2013 –