Next BMW M5 to feature twin-turbo V10, KERS?

Despite the current trend to downsize engine offerings, BMW will reportedly push the envelope with a twin-turbocharged V10 for its next-generation M5. In addition to the V10 powerplant, the next M5 will reportedly feature a version of BMW's F1 Kinetic Energy Recovery System.

Not satisfied with the current car's 507 horsepower naturally aspirated V10, BMW will shoehorn a twin-turbo ten-pot into the next-generation of the M5, according to Auto Express. Said to be derived from the twin-turbocharged V8 used in the company's X5 M and X6 M, the new V10 will crank out at least 600 horsepower.

Previous reports suggested the next M5 would be powered by a twin-turbo V8, but BMW could be planning to one-up cars like the Cadillac CTS-V and Audi RS6 with a forced induction V10.

In addition to the new twin-turbo V10, BMW is also said to be working on an F1-derived KERS system for the next M5. As used in F1 racing, the KERS system would recoup some of the energy lost during deceleration, storing that energy for an extra boost of power. Unlike typical hybrid drivetrains, the KERS system was designed for pure performance.

Despite its less-than-green hybrid system, the new M5 will have some eco-friendly tech aboard. A cylinder deactivation system should be included in the M5 package, which will help boost fuel economy - particularly in highway driving.

The next M5 - along with the rest of the 5-Series range - is expected to bow next year as a 2011 model.