[Jason]

Yesterday, we brought you photos of the 4 Series Coupe M Sport in testing, and to that we now add photos of the 428i prototype in FEP stage of testing.

The 428i Coupe and Convertible will be powered by the same 2.0L twin turbo inline 4 (N20 engine) as the F30. The N20 engine has just been named one of the 10 best engines by the 2013 Ward's 10 Best Engines List.

The F32 4 Series coupe production begins July 2013 for deliveries starting late summer - early Fall of 2013.

Catch all our BMW 4 Series coverage/updates @ http://www.bimmerpost.com/4-series/