Yeah, if possible, get a copy of the Window Sticker. An Audi dealer can provide it easily. Understand what comes standard on Prem+ and Prestige, then look at the window sticker for the other options.

When I was looking for my car, I had to have the Sport Dif and Active Damping Suspension. Mine was a Certified Pre-owned. Neither of these options were listed on the Audi dealer's ad, yet when I looked at the window sticker they provided, those options were there. Odd that the dealer didn't point that out (along with Audi Care prepaid maintenance). Obviously those things add value to the car, so you'd think a dealer would point that out. They don't always do that.

BTW, the window sticker won't list Audi Care. You can call any Audi dealer and provide the VIN and they will be able to tell you if your car has it or not.