I bought my 2000 Audi A6 2.7T Quattro as a secondhand car… this is one of the best cars I've ever driven……with about 34k on it….I now have 67K and only have had to change the oil and air filter. They are great automobiles. As with anything though, if the person before me didn't take care of it I might have to fix some things to get it running perfect. I don't think that stuff costs an arm and leg, but some things could be pretty pricey....Good luck….if u to thinking of buying second car and maybe get it checked out by a mechanic before you buy if you can. Just to be safe.