Audi A4 series is the next to what a good class means but it’s still a bit below from the perfect ones. Audi A4 2011 series is a rival for the BMW 3 series, an All Wheel Drive Infiniti G37 and the Acura TL. The BMW 3 series still haves the golden badge in the category for luxury sedans but the others are also not that far behind. The Audi A4 series is has some features that make it stand distinct and can dwell the buyer’s decision.