The vehicle is described as rustproofed from new and always garaged, suggesting good care. However, it has been converted into a Wurst Wagon/mobile barbeque, implying modifications and use in a commercial capacity which can lead to wear and tear not typical for a standard vehicle. Without specific details on the condition of the conversion and the base vehicle's mechanicals and bodywork beyond rustproofing, a 'Very Good' rating seems appropriate, acknowledging potential for minor wear typical of a converted vehicle.