By January 30, 2012 Read More →

BMW X5 M50d and X6 M50d

With the most powerful diesel in the BMW engine line-up and the optimisation of power transfer, handling and aerodynamic balance for which M is renowned, the BMW X5 M50d and BMW X6 M50d set new standards in their class in terms of sporting performance, conceptual harmony and efficiency. The engine developed for the BMW M Performance Automobiles generates maximum output of 280 kW/381 hp and peak torque of 740 Newton metres (546 lb-ft). The BMW X5 M50d races from 0 to 100 km/h (62 mph) in 5.4 seconds, while the BMW X6 M50d brings that time down to 5.3 seconds. Both models also benefit from the immense reserves of power provided by their diesel engine when it comes to short sprints at higher speeds. Top speed is electronically limited to 250 km/h (155 mph) in both cases.

The two models’ frugal approach to fuel use offers further evidence of their impressive abilities. At 7.5 litres per 100 kilometres (37.7 mpg imp) and 7.7 l/100 km (36.7 mpg imp) respectively in the EU test cycle, the average fuel consumption figures of the BMW X5 M50d and BMW X6 M50d are only slightly above those for the existing diesel variants of the two models. CO2 emissions stand at 199 grams per kilometre for the BMW X5 M50d and 204 grams per kilometre for the BMW X6 M50d. Outstanding efficiency is a characteristic the eight-speed Sports automatic transmission in the BMW X5 M50d and BMW X6 M50d shares with the new diesel engine. Added to which, BMW EfficientDynamics technology guarantees intelligent energy management. Brake Energy Regeneration, the need-based operation of ancillary components and a disengageable air conditioning compressor are all standard.

The BMW xDrive all-wheel-drive system uses an electronically controlled multi-plate clutch to distribute the engine’s power between the front and rear wheels variably and according to the situation at hand. Indeed, drive can be switched between wheels in a split-second to optimise traction, directional stability and driving dynamics. xDrive and the DSC stability control system work together to provide advance analysis of the driving situation ahead. The ability to detect the danger of drive slip at an early stage and counteract one or several spinning wheels by varying the distribution of power has helped earn xDrive its status as an intelligent all-wheel-drive system. In normal driving situations drive is sent predominantly to the rear wheels, accentuating the renowned handling characteristics of BMW cars. The M-specific set-up of the BMW X5 M50d and BMW X6 M50d has been optimised to enhance dynamics, helping it to retain a rear-wheel bias under dynamic cornering. Even when the car is stable through corners, a larger proportion of the engine’s power is channelled to the rear axle to enhance agility and stave off understeer.

In addition, Performance Control enhances the handling agility of the BMW X5 M50d, while Dynamic Performance Control does a similar job for the BMW X6 M50d. As soon as the front wheels of the BMW X5 M50d start to push excessively to the outside of a corner, the control electronics of xDrive and DSC team up to brake the rear wheel on the inside of the bend as required. The loss of forward propulsion is balanced out by an increase in engine power, the intervention of Performance Control ensuring precise turn-in. Power distribution can be varied to an even greater degree in the BMW X6 M50d, which comes as standard with Dynamic Performance Control. This system reroutes engine output from the inside rear wheel to the outside rear wheel around a corner if the system detects an imminent risk of understeer. Dynamic Performance Control also counteracts oversteer in its early stages, switching drive from the outside rear wheel – which is experiencing particularly high centrifugal forces – to the inside rear wheel. Dynamic Performance Control also steps in to stabilise the car when the driver takes his foot off the accelerator, ensuring precise and agile turn-in and enabling extremely dynamic acceleration out of corners.

Exclusive exterior and interior design features for the two BMW M Performance Automobiles based on the BMW X models provide clear visual differentiation, optimised aerodynamic balance and enhanced driving pleasure. Its powerful presence and distinctively three-dimensional contours make the body-coloured front apron a genuinely eye-catching item. To optimise the supply of cooling air to the power unit, the spaces normally reserved for foglamps on regular BMW X models take on a new role as air intakes, and these large surfaces offer a tantalising hint of the engine power lurking behind the scenes. Horizontal bars in the colour shade Ferric Grey metallic course across their surface. The race-inspired air-channelling flaps sited below the side air intakes optimise the cars’ aerodynamic balance at high speeds.

Titanium-coloured vertical bars for the BMW kidney grille, exterior mirror caps in Ferric Grey metallic, a model badge on the tailgate and BMW High-gloss Shadow Line trim for the side window surrounds and exterior mirror bases add further model-specific touches. The BMW X5 M50d comes as standard with 19-inch M light-alloy wheels in V-spoke design, the BMW X6 M50d with 20-inch M light-alloy wheels in double-spoke design. Both models are also available with optional 20-inch M light-alloy wheels in Ferric Grey metallic developed exclusively for the BMW M Performance Automobiles and fitted with mixed tyres. The powerful appearance of the BMW X5 M50d is given additional presence by wheel arch extensions and bespoke side sills and kick plates, while the athletic stance of the BMW X6 M50d is underlined by a bonnet sporting a striking powerdome as standard. Both models also boast a muscular rear apron with the embellishers for the exhaust tailpipes integrated left and right.

The sporting driving pleasure served up by the BMW X5 M50d and BMW X6 M50d is summed up in their interiors by door sills bearing the “M Performance” lettering, the inscription “M50d” in the instrument cluster, a gearshift lever with M logo, an M leather steering wheel with gearshift paddles, an M driver’s footrest, a BMW Individual roof liner in Anthracite and Brushed Aluminium Shadow interior trim strips. Both models are also fitted as standard with exclusive Alcantara/Nappa leather M sports seats offering electric adjustability and a memory function. The black seats are adorned with white contrast stitching and an embossed M logo.

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