More Power, Better Efficiency From BMW’s V8

Enhanced V8 power will blast the range-topping new giant BMW M850i xDrive Gran Coupé to 62mph from standstill in under 4 seconds.

Engine updates claim improved power delivery and thrust to go with the acoustic charge from the standard equipment flap-controlled M Sport exhaust system. The new 4.4-liter V8 delivers peak torque of 553ft-lbs with a maximum power output of 527bhp.

At the same time emissions have been improved with an average fuel consumption of 23mpg (US) and combined CO2 emissions of 229g/km.

Alongside the V8, a newly developed 3.0-liter six-cylinder in-line gasoline engine powers the BMW 840i Gran Coupé  with twin turbo technology and weighing in at around 13-lbs than the engine it replaces and delivering 337bhp with improved torque of 368ft-lbs. This allows the sprint to from zero to 62mph in 5.2 seconds while providing a claimed combined fuel consumption figure of 30mpg (US) with CO2 emissions of 168g/km.

The third engine option is a 3.0-liter straight-six, twin turbo diesel unit in the 840d xDrive Gran Coupé delivering a peak torque of 501ft-lbs and 317bhp. The zero to 62mph sprint takes 5.1 seconds while average fuel consumption is a claimed 36mpg (US) with CO2 emissions of 162g/km.

The new car claims intelligent connectivity with its eight-speed Steptronic Sport transmission’s control unit able to adapt its shift strategy by using data from the standard navigation system is used to change down early when approaching a junction. It will also use location data together that from cameras and radar sensors of the driver assistance systems to manage its start-stop function. In this way, inefficient engine shutdown, for example when stopping briefly at junctions, can be avoided. European starting prices range from $87,370 to $123,131.

— Paul Myles is a seasoned automotive journalist based in London. Follow him on Twitter @Paulmyles_

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