Prior owner Claimed "Engine Performance " issues ...If it was a bad engine MBZ would have replaced it under warranty . I am not saying the prior owner was looking for a way out of it , just saying there are alot of Lemon law attorneys helping people get out of their loans on Camper vans that were purchased at the height of Covid pricing ... So they will make a "vague claim " . Its then easier for the manufacturer to simply buy it back . MBZ cerified that the engine is indeed up to specs. In fact MBZ has to warranty the alleged problem for 12 months or 12k miles if they want to resell it to the General Public.