Total rip-off merchant and sleazebag.  Bought an Audi A6 for 100k+, and have so far spent another 40k:- in repairs which were pre-existing with the car before I bought it from Magnus.  I tried to get repairs done with them as part of the "regret period" and obligation of the seller, but after 15 visits and constant unwillingness to do anything, Magnus himself tried to start a fight with me in his show room. I've been getting repairs through Audi and have heard horror stories of this guy's reputation, including a mechanic who used to work for them and left for Audi because of how bad conditions are there.  They have also identified that the one "repair" Magnus made in an attempt to get me off his back was using non-standard parts, which likely need replacing now.  Also, as a sign of the total lack of car checkup before selling, the fusebox was clogged with leaves so badly that the electrics corroded and caused additional mechanical faults because of bad sensors.  If you don't want to spend half of a car's value on repairs, stay away from this piece of crap at all costs! 