2017 BMW 4 Series Gran Coupé facelift spotted

First spy shots show the facelifted BMW 4 Series Gran Coupé undergoing testing ahead of the car's anticipated launch in the middle of next year. 

Following the recent reveal of the Audi A5 - and by extension the Audi A5 Sportback - the tweaks set to occur on BMW's four-door are subtle, and limited to just the front and rear bumpers. The front light clusters, as is apparent in the shots, now feature the W-shaped motif first seen in the facelifted 3 Series.

In the bumper, the air intakes on this model - which appears to be the standard 4 Series Gran Coupé rather than the more aggressively-styled M Sport trim - have been revised. 

Sources suggest the rear lights may have been refreshed as part of the rear-end styling tweaks too, although the rear lights are heavily camouflaged. Akin to the front-end tweaks, the rear has also been subjected to a subtle refresh.

The lack of camouflage on the rest of the car shows us that this has been left untouched over the current model. 

Engines are likely to be shared with the new raft of units seen on the facelifted 3 Series, which means that the three-cylinder 1.5-litre petrol engine also used in the Mini and the 2 Series Active Tourer is expected to feature.

BMW remains tight-lipped on any further details about the facelifted four-door coupé, given that the new car may not be revealed until the middle of next year. The changes applied are likely to follow those implemented on the recently facelifted 3 Series, as the models are closely related.