BMW will add a new model to its lineup known as the 4-Series.
 
The 4-Series concept will make its world debut at the 2013 Detroit Auto Show and BMW has just released the first official details of the upcoming concept.

The new 4-Series will take its design inspiration from the 6-Series Coupe and it will offer greater sportiness, greater exclusivity and even clearer differentiation from the 3-Series. It will also be longer and feature a lowered roof line.

BMW offered no details on the engine lineup just yet, but the production version will be offered with the same engine lineup as the 3-Series sedan.