eD4 impermanent??

Hollo, today I did a round at the RR dealers in and around Cologne/Bonn. I already know that a seller doesn’t know everything, but, – One sells me the TD4 as a pure front-wheeler that only switches the rear axle on within 0.003sec if necessary. Therefore only 0.3litres/100km more consumption. – The next describes the eD4 as an uncarable car which is just a castrated all-wheeled vehicle and is therefore not to be acted on in normal operation. Badly balanced and in wint run any VW Golf Underlying Here’s my question, who has an eD4 and how are the experiences with it. Summer and winter,… Thank you very much!