I am looking at buying a 2001 S80 T6 and see that there are alot of reviews that say the car needs constant repairs. It has 160k miles and needs a new air flow meter. Not sure if it needs anything else the dealership said the computer won't go any farther with the diagnosis until the air flow meter is replaced. Doesn't sound right to me. Just wanted to know if they are as problematic as they sound.