The BMW 6 Series Coupé and Convertible will both soon be available with diesel power, resulting in 51.4 mpg and 144 g/km CO2 in the case of the 640d Coupe.
The 640d Convertible isn’t far behind, with 148 g/km CO2 and 50.4 mpg. Both models develop 313 hp and 630 Nm torque and have an electronically limited top speed of 155 mph. Just a few years ago it would have been unthinkable that sports cars with such performance would be able to achieve more than 50 mpg.
The 640d’s 3.0-litre twin-turbo in-line six-cylinder engine has variable geometry turbocharging. BMW’s ECO PRO mode, fitted as standard on both the 640d Coupé and the 640d Convertible, provides more economical performance when driving at low speeds or when cruising, when it allows the standard eight-speed automatic gearbox to shift up earlier while altering throttle sensitivity, engine mapping and the power consumed by electronic auxiliary systems.
The BMW 6 Series Coupé and Convertible will also be available in M Sport trim. The M Sport package adds the M aerodynamic bodystyling package, 19-inch M light alloy wheels, dark chrome exhaust tailpipes, High-gloss Shadowline exterior trim and black brake callipers. Inside Anthracite headlining, Aluminium Hexagon trim, Sport seats and M Sport multi-function leather rimmed steering wheel are fitted.
The new BMW 6 Series Coupé will be launched this autumn. The BMW 640d Coupé costs from £62,080 while the 640d Convertible starts at £68,210.