 i bought 2005 audi a8 back of 2009 ever since then i have problem with this car.started with tire pressure coming on for no reason.other issue, battery always discharging completely even nothing on.This car is probably the worst car out there.If anyone thinking buying one,you better think again!!.i did some research with this car before i bought it.They have desame issue im having since i got it.i should listen to other people.unless you willing to be at shop every week and spend alot of money.2005 audi a8 PSO thats the 3 letters for this car.beware!!!!!!!!never going buy audi again.