Got a hankering to own an Audi from the beginning of the Aughts? If you’re hunting for an example that wears a model badge with the number “6,” you might want to have a mechanic take a look its nipples. More specifically, make sure the rollover valve in the fuel system has been given proper attention, otherwise the nipple can become cracked and lead to fuel winding up on the ground instead of feeding the engine. @funkmasterflex