Hey guys so i recently bought an audi a month ago and just recently put it on the road because i was on vacation. I took it to my garage and ended up finding out i have 16 error codes that came up and 2 were still pending. My mechanic said I have a misfire and also my head gasket is going. Should i buy a new engine, fix the engine way it is or just sell the car the way it is. P.s. the douche bag that sold me the car took the check engine light off so I had no idea when I try to run an inspection this all came up :/... Advise plz n ty if its worth fixing or just selling?