The 2014 Audi A4 will be lighter and is expected to feature the e-quattro drivetrain.
In about two years, Audi will replace the current A4 with the new model (B9) that will be followed by an Avant variant in 2015. This will be the first model coming out from Ingolstadt to get the firm's new electric Quattro drivetrain. As far as the design is concerned, don’t expect a lot of changes as it will still be a baby A6, but that's where the similarities will end.
The 2014 Audi A4 is tipped to be more flexible and lighter, according to CAR. The British magazine reports that the new A4 will be about 100 kg (220 lb) lighter than the current model so the lightest model will weigh somewhere around 1330 kg (2932 lb).
Besides going on a diet, the A4 (B9) will also get Audi's plug-in hybrid system and chances are that it will also feature the e-quattro system that will ditch the current mechanical diffs and propshafts necessary for the Q models in favor of an electrically driven rear axle. It will probably get two e-motors capable of providing a combined output of 136 HP (100 kW) to motivate the rear wheels.
It will also be available with conventional engines, such as a more powerful version of the 4-cylinder 2.0-liter gasoline unit with 225 HP (165 kW), along with an updated version of the 2.0-liter TDI with 197 HP (145 kW). Audi also plans on rolling out a front-wheel drive plug-in hybrid in the form of the B9 PHEV which will get a 2.0-liter 226 HP (166 kW) gasoline engine and a 35 HP (26 kW) electric motor that will be installed within the transmission housing.