I have been wanting an A-8 for years and finally ran across one worth buying. Depreciation is heavy in the first 3 years but this is the best sedan in its class by far. The MMI is awesome and extremely easy to figure out for a non-tech guy. I have owned Lexus, BMW, and Acura and would not go back. This is the car to own if you can afford one.
MMI, soft close doors, power trunk, solar sunroof, messaging seats and cooled seats, and Bluetooth is fantastic.
Like everyone else says the legal disclaimer every time you start the vehicle.
† Edmunds.com received the highest numerical score in the proprietary J.D. Power 2014 Third-Party Automotive Website Evaluation Study℠. Results based on responses from 3,381 responses, measuring 14 companies and measures third-party automotive website usefulness among new and used vehicle shoppers. Proprietary study results are based on experiences and perceptions of owners surveyed from January 2014. Your experiences may vary. Visit jdpower.com.