Power in the new X5 M and X6 M comes from the high-revving, twin-turbocharged S63 V8 engine generating 600 hp @ 6,000 rpm and 553 lb-ft @ 1,800 – 5,690 rpm. This is an increase of 33 hp and 1,090 rpm wider full torque range than the outgoing 2nd generation models. The Competition models produce an increased 617 hp and 553 lb-ft @ 1,800 – 5,860 rpm. Working with the M Steptronic eight-speed automatic transmission with Drivelogic, the M xDrive all-wheel drive system with Active M differential, the power and traction allows the X5 M and X6 M to sprint from a standstill to 100 km/h in 3.9 seconds (3.8 seconds for the Competition models). Top speed is electronically limited to 250 km/h, which increases to 285 km/h with the optional M Driver’s Package which also includes a voucher for driver training at BMW’s Performance Center East (in Greer, SC) or West (in Thermal, CA) Driving Schools.
The BMW S63 TwinPower turbocharged eight-cylinder engine features indirect, highly-efficient liquid-to-air intercooling, a cross-bank exhaust manifold to improve gas-flow out of the cylinders and into the turbochargers, direct injection operating at 5,076 psi and VALVETRONIC variable-valve timing. The block is of a closed-deck design with sleeveless cylinder walls and a forged crankshaft.
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