Audi will unveil its 3 Series fighter in Frankfurt this September.
As Audi looks to steal away some BMW 3 Series buyers from its German nemesis, the four rings is continuing work on the new A4, which has been spied here cold weather testing. As we've said before, the styling is evolutionary, with a longer wheelbase and shorter overhangs for improved cabin space. The grille will mimic that of the TT's, the rear lights will be thinner and the side mirrors now sit on the door blade instead of the windows.
Compared to the current Audi A4, the next-gen model will lose up to 100 kg of weight thanks to the MLB Evo platform, while power will come from a range of gasoline and diesel units, as well as plug-in hybrid and high-performance S and RS variants further down the line. An official reveal at the Frankfurt Motor Show is expected.