The estate version of Audi's large executive model promises to be the biggest seller of the two bodystyles. The previous model, although popular, was never perceived in quite the same league as rivals from Mercedes-Benz and BMW, but the new car now offers a far more impressive repertoire with which to appeal to the estate buyer. It's considerably larger than the car it replaces and the high standards of luxury impress more than ever while it's wonderfully cosseting for passengers.