Follow the name game.
It pays to remember that a car might pull a Chad Ochocinco and change its name midway through a model cycle. If the 2013 Audi Allroad bears a resemblance to the dearly departed 2012 A4 Avant, that's because it is an A4 Avant beneath its skid plates and Mad Max–meets-Telluride vibe. Either way you get the same punchy 211-horsepower, turbo four-cylinder, eight-speed transmission, and quattro all-wheel-drive system. So if you like the Allroad but found a deal on a 2012 A4 Avant, you could buy it knowing you're getting a car that's functionally, if not aesthetically, identical.