Greetings from Minnesota. I'm really looking at getting a 2004 to 2005 S4, I'm not looking to do any heavy modding or anything. I'm Just going to do Unitronic Software, CAI, and exhaust. I will be purchasing from a dealer, and I do all my own labor and I find my way around a car rather quickly. With that being said, if I buy one with about 80,000 to 150,000 miles clocked, what faults should I look for with high mileage on these particular models? I hear that the 2004-2005 S4's are very reliable. How true is this and how reliable? I am a mechanic for a living so I'm not dumb when it comes to cars, I've just never had the honor of putting a wrench on an Audi. Any suggestions and advice will be greatly appreciated thanks guys!