Third body style of the new 8 Series range will be the most practical with four passenger doors.

The first-ever BMW 8 Series Gran Coupe has been teased on social media ahead of its debut, presumably some time this year.

The Gran Coupe's first teaser image doesn't reveal much we haven't already seen in earlier spy photos, although it does confirm our suspicion the car's subtle Hofmeister kink will come courtesy of a piece of black plastic placed on the C-pillar.

Drivetrains for the 8 Series Gran Coupe have yet to be confirmed, but the engines already available in the coupe and convertible seem to be a certainty.

Globally, existing 8 Series variants include the M850i xDrive with a 390kW/750kW 4.4-litre twin-turbo V8, and the 840d xDrive with a 235kW/680Nm 3.0-litre six-cylinder turbo-diesel.

Both engines are paired with all-wheel drive and an eight-speed automatic transmission as standard.

We'd also put money on an M8 variant with a high-performance version of the company's 4.4-litre V8 making "north of 440kW".

The dashboard and interior design of the Gran Coupe should be shared with its two-door siblings, meaning items like the 12.3-inch digital instrumentation screen and 10.25-inch infotainment display will be carried over.