Hey guys I picked up a '2005 Audi A6 C6' a couple of months ago and I'm wondering if the C6's are notorious for rusting on the bottom of the doors, rear arches, sills or have I just got a lemon car. I knew about the rust on the sills and plan to fix it but on further inspections and when cleaning the car I've noticed a whole lot more that would've put me off the car when purchasing. Myself and the car are located in Scotland where the council uses to much salt during the winter months so that has probably made a big difference.

All my doors, sills and arches have rust on them and I'm unsure what to-do about the problem, either spending a tonne of money or just selling it and buying something better in my price range without rust. I do love the car and the C6's in general but the only gripe I have with the car is the rust present on the vehicle.

Full Imgur album: https://imgur.com/a/wlopKk6

I've attached a few pictures of the rust problems below but will include the full album to avoid posting 30+ pictures: