Things are abuzz right now in the car industry, with the Frankfurt Motor Show swinging in full force. BMW also joined the party by unveiling the Concept 4, previewing the brand’s future interpretation of a sporty coupe, with emphasis on the 4 Series range.

From the front, the vertical kidney grille takes centre stage, but perhaps in the most glaring fashion. Like it or not, BMW will continue to produce various interpretation of the kidney grille, because it has “always been a signature feature of BMW cars,” said Domagoj Dukec, Head of BMW Design.

The large, conjoined vertical grille with mesh inserts harks back to the classic BMW 328 and 3.0 CSi look. The design is evidently elaborate – the grating features distinctly faceted cuts, and if you look closely you’ll see an array of small “number 4s” joined together.

In typical BMW fashion, the headlights are made slim, and the LED elements feature no glass cover. Instead, they are designed into the body like 3D sculptures, which BMW claims to allow a greater sense of technical sophistication to the front end. The bonnet gets prominent contours that lead into the kidney grille, while the front bumper is aggressively styled with huge side intakes.

Things get better round the side. The combination of a long wheelbase, short front overhang and sleek flowing roofline create a dynamic profile, and the pronounced contours on the side panels offer visual depth by way of light reflection. This is accentuated with the Forbidden Red paint which, under certain lighting conditions, project a rich shade of red that’s almost black.

At the back, the Concept 4 looks unlike any BMW coupes before it. The taut haunches meet with the sweeping roofline and flow into the boot lid, where it tapers off into the neatly integrated spoiler. BMW’s signature L-shaped LED tail light (made from fibre-optic element) graphics are present, complete with the company’s logo printed on the outer sides.

Other notable design cues include a pair of super slim side mirrors with floating BMW logo (it only appears under close inspection), 21-inch lightweight five-spoke alloy wheels, vertical rear outlets, and massive rear diffuser with rectangular tail pipes.

BMW Group Design’s senior vice president, Adrian van Hooydonk said: “The BMW Concept 4 embodies the aesthetic essence of the BMW brand. It combines perfect proportions with a clear and precise design.” Looking at the Concept 4, do you agree? What do you think of the ever-growing kidney grille?

GALLERY: BMW Concept 4 press photos