The new platform does mean new powertrains, though. The entry-level sDrive40i and xDrive40i models make do with BMW's twin-turbocharged 3.0-liter inline-six, producing 335 horsepower (249 kilowatts) and 330 pound-feet (447 Newton-meters) of torque. Those numbers represent a modest 33 hp (25 kW) and 35 lb-ft (47 Nm) increase over the outgoing version. To 60 miles per hour (96 kilometers per hour), it takes the sDrive model 5.2 seconds, while the xDrive version gets there in 5.3 seconds.
The more-powerful X6 M50i model gets BMW's twin-turbocharged 4.4-liter V8 instead. Here, that engine produces 523 hp (390 kW) and 553 pound-feet (750 Nm) of torque, an increase of 78 hp (58 kW) and 74 lb-ft (100 Nm) over its predecessor. It takes the X6 M50i just 4.1 seconds to hit 60 (0.5 seconds better than its predecessor), and it will continue on to a limited top speed of 155 miles per hour (249 kilometers per hour). And if you spec it with the factory trailer package, the X6 can tow up to 7,200 pounds (3,265 kilograms).
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