Haven't heard of any AWD 5 series other than the X5. But I could never really understand why someone would want an AWD Bimmer. Audi has been doing it so well for so long, why not consider the A6? The beauty of the BMW IMHO is the 50/50 weight distribution, fabulous suspension, and the rear wheel drive. All of which are comprimised by the AWD feature. My .02. Good luck with whatever you decide.