The successor of the BMW 5 Series Gran Turismo will arrive this summer and will be sold – for the first time- under the 6 Series badge. One of the models – confirmed for now for the U.S. market – is the 2018 BMW 640xi Gran Turismo which will be powered by the new B58 engine.

The 3.0 liter six-cylinder turbocharged engine is now available in the 340i and 740i, delivering 320 horsepower and 450 Nm (332 lb-ft) between 1380-5000 rpm. The new 6 GT will also be available standard with the xDrive all-wheel drive system.

With a more sweeping roofline and more hatchback-like trunk, the 6 Series GT should be far better looking than the somewhat dumpy-looking 5 Series GT. Our sources say the overall look is much better balanced with some influences from the new 5 Series family as well.

Just like the G30 5 Series, the G32 6 Series Gran Turismo has gone through a weight loss program. The Gran Turismo will be based off BMW’s CLAR (Cluster Architecture) modular platform, with a mixture of aluminum, steel and carbon fiber.

European markets will receive the typical suite of BMW’s diesel and petrol engines, nearly identical to the G30 5 Series sedan offerings. For diesel power, there will be a BMW 620d, 630d and top-of-the-line M650d xDrive, the latter using BMW’s newest B57 quad-turbo engine. For petrol power, you can choose from the BMW 630i, 640i and M650i xDrive. The latter will get the same 4.4 liter twin-turbocharged V8 as the new G30 BMW M550i xDrive. At least one hybrid will be offered as well, under the iPerformance brand.