Almost any european car is going to have insanely high maintenance cost, especially when parts need to be replaced. And with the 2.8L engine that A6 is not exactly going to be an economy car as far as gas goes. My advice is, although you'd look baller driving an Audi, do yourself a favor and go Asian for a car. I would like to suggest a domestic car, but the truth is, they just aren't as good. Although they may not be status cars, Hondas and Toyotas run for a very long time, have great resale values, will generally get better gas mileage than an Audi, have less maintenance to be done, and have cheaper maintenance costs. If you're looking to save money, do not buy an Audi. If your looking for a mid-sized sedan like the A6, I would go with something like an Accord, Camry, or Avalon.