This car is bone-stock and it's been babied since I bought it at 60,000 miles. It now has 117,500 on it; mainly highway miles. It is super-clean and pulls like a champ. Since I have owned it, all maintenance and repairs have been performed at Barrier Audi (I have all records) with the exception of a few oil changes which I did myself.
Recent work done:
105K maintenance (timing belt, water pump, etc.)
New alternator
Brake pads
Tie-rods
Front control-arm bushings (both sides)
Front axles
Highlights and extras:
Sport package
Cold-weather package (front/rear heated seats, side mirror defrost, etc.)
Leather in good shape
Title clean and free
Rare drivetrain combo (2.7T with 6-speed manual)
New tires (Yokohama YK580)
iPhone/iPod integration into factory sound system (Audi Symphony/Bose) through the CD changer port (which means you can control via steering wheel controls)
Still have all the little extras (cargo net, first-aid kit, owner's manual, etc.). I even have the original sale sticker.
I have ridden in this many times and driven this car several times. You will not find a cleaner and more well cared for bone stock A6. Good luck with the sale man.