We've already seen spy shots of the facelifted BMW 4 Series Coupe, Convertible, M4, and i4, so it only seems natural to share images of 4 Series Gran Coupe prototype. By the looks of it, we're dealing with a test vehicle that had the optional M Sport Package. However, it's not the M Performance version since the M440i has beefier exhaust tips. Consequently, it's likely a 430i in US flavor judging by the orange side markers.
