BMW has taken the wraps off its most controversial M products to date: the 171mph X5 M and X6 M SUVs.
The cars are the first all-wheel-drive models and mark new territory for the M brand, usually tasked with making ultra-fast saloons and coupes.
Both cars are fitted with a new twin-turbo 4.4-litre V8, which produces maximum power of 547bhp between 5750rpm and 6000rpm. Peak torque of 501lb ft is maintained between 1500rpm and 5650rpm.
The two turbochargers in the M TwinPower unit are positioned together with the catalytic converters between the two rows of cylinders.
BMW claims that this layout creates better response and a more linear power delivery.
Both cars crack 0-62mph in 4.7sec, and while their top speed is limited to 155mph, this increases to 171mph with the optional M driver’s package.
On the outside, the cars feature large air intakes in the front bumper, gills on the front wings and quad exhaust pipes at the rear.