Annual maintenance + repair costs for '12 Audi A6?

I pay $900/yr for maintenance + repairs on my Honda Accord. How much should one expect to pay annually for an out-of-warranty 2012 Audi A6? $2k/yr? $3k/yr? $5/yr?

Audis are expensive to fix. Many parts are not in NAPA or even in the USA! Diagnostic machines are mostly found in the dealers only. I would stay away.