After nearly 8 years on the current platform, the Audi A4 is all new for 2016. Internally called the B9, the all-new A4 is bigger than its predecessor, the B8. Despite the growth in dimensions, Audi says the B9 A4 is lighter by 120 kg compared to the B8. Audi simultaneously unveiled both sedan and wagon, Avant in Audi's terms, for the debut.

A4 Sedan

On the outside, it may appear to be a facelift of the B8 A4 but comes with a re-sculpted bumper and hood. The subtle lines and creases bring the 2016 A4's drag co-efficiency to just .23 cD, making it the most aerodynamic in its class according to Audi. Changes are the rear are more visible with taillights following the company's current design language. For the Avant models, the rear follows the look of the bigger A6 Avant. The Avant has a drag co-efficiency of 0.26.

A4 Avant

As for dimensions, the A4 is 25 mm longer, 16 mm wider than the model it replaces while the wheelbase has been stretched by 12 mm. The interior also benefits from the larger exterior dimensions. The A4 gets 23 mm more rear legroom and gets a bigger cargo capacity.

A4 interior

The all new interior gets a wide variety of trim and fabric options, as well as an updated infotainment system which Audi calls MMI. The MMI system features an 8.3-inch monitor, has a touchpad in the rotary controller to zoom in and out and to enter characters. The entire MMI control logic is similar to that of a smartphone and includes an intelligent free-text search function.

On higher spec models, the A4 gets a Virtual Cockpit, a 12.3 in fully digital instrument cluster. Other in-car technologies in the A4 are support for voice control, Wi-Fi hotspot. LTE connectivity, Android Auto and CarPlay. Optional is a rear-seat entertainment system with dual 10.1-inch tablets and customers can also order an optional Bang & Olufsen sound system.

The 2016 A4 is also available with a mix of driver aid technologies such as dynamic steering, which varies its ratio according to the car's speed and the steering angle, and suspension with adjustable shock absorbers. The system is standard on models with 190PS and up. It also comes with predictive efficiency assistant helps drivers to save fuel, Audi active lane assist, Stop&Go adaptive cruise control including traffic-jam assist which works in conjuction with the predictive efficiency assistant. The A4 is also available with parking assist, rear cross-traffic assist, exit warning, collision avoidance assist, turn assist, Audi pre-sense systems and camera-based traffic-sign recognition.

As for engines, the A4 is available with gas, diesel and natural gas engines. In its launch, the A4's gas engines consists of a 1.4 TFSI engine with 150 PS and 250 Nm of torque and two 2.0 TFSI engines with different outputs. The first 2.0 TFSI engine puts out 190 PS and 320 Nm of torque. The second 2.0 TFSI engine has an output of 252 PS and 370 Nm of torque.

The diesels get a wider variety of engine choices. The 2.0 TDI range puts out 150 PS and 320 Nm in the base model while higher level variants get 190 PS and 400 Nm. The 3.0 TDI models put out either 218 PS and 400 Nm of torque or 272 PS and 600 Nm of torque. The natural gas engine is exclusive to the Avant called the g-tron. It comes with a 2.0 TFSI engine with 170 PS and 270 Nm of torque.

Sales for the 2016 Audi A4 Sedan and Avant models set for this fall.