Rumored to launch at the 2013 Detroit Auto Show, the BMW 4 Series Coupe was spotted with limited camouflage near the BMW headquarters in Munich.
Compared to previous spy photos, now the spied test mule gives us a full and clean look at the side design which surprisingly it features a functional vent. Same as the F30 sedan, the 4 Series Coupe will have the new side mirrors with signal indicators. Placed above the side vent, a small badge indicate that we are looking here at the Sport Line model.
As we anticipated plenty of design elements from the F30 sedan will be changed for the higher valued 4 Series Coupe, starting with the front bumper and the kidney grille dimensions. The prototype also comes equipped with the M Performance brakes.
Now shown in the photo below, but available at Carscoop, is the view of the prototype which sports the dual exhaust pipes setup, an indication that we are looking at the highest 4er Coupe: 435i or 440i (if BMW includes an upgrade engine to justify the higher naming designation).
The 4 Series family will make use of four-cylinder engine, in both petrol and diesel variants. Customers looking for more power will have the option to choose 3.0 liter turbocharged engines.
Production will begin in Spring of 2013 with an U.S. launch scheduled for next summer.