The premium mid-size sedan segment has been competitive for years with the BMW 3 Series being the consistent benchmark. With Audi's current A4 showing its age, details are beginning to emerge on the next-generation model, which is expected to grow in size but go down in weight. For starters, not only will there be a new long-wheelbase version for the Chinese market, there will also be a direct competitor to the upcoming 3 Series Grand Turismo that's rumored to be called Vario that could launch in 2016.

The standard sedan itself will be built on a slightly longer wheelbase than it is currently but will likely cut around 220 lbs. While lower trim level versions will be powered by 1.4- and 2.0-liter TFSI engines with cylinder deactivation, the high-performance S4 could pack a 3.0-liter V6 that'll produce nearly 340 horsepower. There will also be a diesel engine lineup consisting of the familiar 2.0-liter unit as well as a V6 TDI. Also expect to see a plug-in hybrid variant that may even have a second electric motor on the rear axle powering the all-wheel-drive system. Expect to see the A4 sedan and Avant arrive sometime next year.