2009 2.7 A6 Allroad reliability

Good evening, I'm fairly new with Audi's, and I'm looking at a 2009 2.7 A6 Allroad to replace my previous A6 Le mans 2.7 that broke a week after purchase. Luckily I'm covered by UK law and will be receiving a full refund. For obvious reasons, I want to make sure I'm not walking into another unreliable nightmare.

A little background, it has around 100k miles on the clock and a good service history, any advice before I go in blind?