Official photos and details have been released of Audi’s new and improved 2016 A4 and A4 Avant, which are both significantly larger and lighter.     From its sharply-angled headlights to its elegant side panels, the new A4 and A4 Avant’s s exterior is very similar to its previous models. The interior offers increased shoulder width and head clearance for both the driver and front-seat passenger by 11 and 24 millimetres, respectively. Taller...