 This car has cost me so much. Full synthetic oil changes, premium fuel (I average 17 mpg), and incredibly high maintenance cost. It's a very comfortable car but it's not worth the headaches and repairs. $300 for an O2 sensor, $900 for crank case vent valve, $373 for mass air flow sensor, and now the Cats need replacing....$1600. Additionally, the value of Touaregs and Volkswagen in general have gone way down due to the emissions scandals--it makes no difference whether your vehicle is a TDI or not. I ended up selling the car, taking out an unsecured loan to cover the negativity equity ($6200), and then purchased a Jeep. I haven't looked back.