![]() The BMW X6 xDrive50i went on sale in November 2008 priced at £53,930 OTR. ![]() The Porsche is 1.4 seconds slower from zero to 62mph, 2.3mpg less efficient and, at 332g/km, it is 33g/km more polluting. ![]() It is a similar story when comparing the same BMW X6 to the Porsche Cayenne GTS. The BMW’s CO2 emissions figure of 299g/km is 75g/km cleaner than the Range Rover and, in recording a combined 22.6mpg figure, it is also 4.8mpg more fuel efficient. To highlight the competitive advantage this arrangement yields the BMW X6 xDrive50i is 1.8 seconds quicker from zero to 62mph than the flagship Range Rover Sport. Such a configuration aids packaging requirements while also boosting responsiveness courtesy of the shortened exhaust pipes. The 4,395cc engine features the novel design of two turbochargers and catalysts within the vee of the engine. Powered by a unique twin-turbocharged V8 engine, the vehicle’s 408hp powerplant is capable of propelling the vehicle from zero to 62mph in 5.4 seconds before going on to an electronically-limited top speed of 155mph. Dynamic Performance Control is the only system of its kind in the world able to provide its stabilising effect both under power and with the engine on overrun. Twinned with BMW’s benchmark xDrive four-wheel drive system, Dynamic Performance Control spreads drive forces as required in all situations, feeding a varying degree of power when required to the two wheels at the rear. The second electric motor then converts the power coming from the first electric motor or from the battery back into mechanical power for the output drive shaft on the transmission.īMW Concept X6 is also the first car to be fitted with Dynamic Performance Control. When driver needs all available performance to accelerate, one of the two electric motors acts as a generator, converting some of the engine’s power into electrical current that is subsequently fed to the battery or the second electric motor. The two power-split ECVT sections allow the drivetrain to run at continuously variable speeds and ensure full, highly-efficient hybrid functions throughout the entire operating range of the car. The two operating modes, optimised for low and high speeds, are supplemented by fixed transmission ratios. The result is a reduction in fuel consumption by up to 20 per cent compared with a comparable BMW running on a combustion engine alone.īMW Concept X6 ActiveHybrid has two-mode active transmission is based on an ECVT (Electrical Continuously Variable Transmission). The BMW Concept X6 ActiveHybrid combines two compact, high-performance electric motors connected to one another by three planetary gear sets, a fixed-transmission ratio gearbox and a high-performance battery to deliver benefits over low and high speed ranges. September 2007 BMW X6 revealed as a concept Estate 4.4 V8 xDrive50i M Sport Edition 5dr
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