2011 BMW X5 xDrive35i - Car and Driver

Just as grown children often find themselves caring for elderly parents, the BMW X6 is giving back to the vehicle that spawned it. Based heavily on the BMW X5 , the X6 came to market offering the choice of a 300-hp twin-turbocharged inline-six or... — naturally aspirated gasoline engines, including a 260-hp inline-six and a 350-hp V-8. As of the 2011 model year, the X5 languishes no more. A pair of turbocharged gas motors—a 300-hp six or a 400-hp eight—will slot under its Roundel-stamped hood. The N55 shares the twin-turbo N54’s 3. 0-liter displacement and matches its 300 hp and 300 lb-ft, although it stretches the peak torque band 200 rpm lower, to 1200 rpm, and holds it all the way until 5000 rpm. The six’s 300 hp and 300 lb-ft of torque are only 50 fewer in each category than the outgoing eight’s, and those figures trounce the old, unblown six’s by 40 hp and 75 lb-ft. And although a six doesn’t have quite the same stirring soundtrack as a V-8, the new, single-turbo N55 does a decent job of mimicking the old E46 M3’s note, with a rawer, more aggressive sound than that of the twin-turbo N54. And, of course, those... Source: www.caranddriver.com