 I loved the A8 since the D3 model was first shown.  I waited patiently for the pricing to drop to a level I could afford (preowned).  I have had my CPO car for 4 months and 5K miles, and I still love it. It is not as reliable as my 98 Lexus GS400 which had almost nothing go wrong with it after 145K miles. I just had a number of things replaced at the 45K mile service, such as the trunk hinges (common problem), parktronic sensor, airbag sensor, and one softclose door sensor.  Even with these little problems, I love the car. No serious issue that will leave you stranded, but still something small that requires a trip to the dealer. I do not regret my choice, regardless.