The BMW Concept 4 has been unveiled at the Frankfurt motor show, effectively previewing the next-generation 4 Series coupé.

The first thing you’ll probably notice is the bold new kidney grille (which the Munich-based firm describes as “distinctive”). Interestingly, the redesigned item is vertically positioned, with BMW claiming it references “legendary classics” such as the 328 and the 3.0 CSi.

“The kidney grille has always been a signature feature of BMW cars,” said Domagoj Dukec, head of BMW Design. “The BMW Concept 4 presents a confident and classy take on this iconic feature. At the same time, the BMW Concept 4 offers a look ahead to the expressive face of the 4 Series range.”

And the twin headlamps? Well, the LED elements have no glass cover, and are instead worked into the body “like three-dimensional sculptures”. The LED rear lights each comprise a single fibre-optic element, lending the familiar “L” shape something BMW calls a “heartbeat” graphic (each also dispenses with a glass cover).

The show car rides on 21-inch wheels in a five-spoke design. The fronts of the spokes bear a high-polished finish, while the set-back surfaces feature a slightly darker effect.