The wraps are off the new BMW 5 Series, and you know what that means: you guessed it, a new M5. The successor to the high-revving V10 super-sedan has been the subject of much conjecture and speculation, but Britain's Car magazine believes they've got it pegged.
According to the English glossy mag of record, the new M5 will arrive in 2011 after a show debut in late 2010 or early 2011 – and when it does, it figures to be a real bahnstormer. Put any thoughts of the horsepower wars being over to rest, because while the new M5 is expected to drop its V10 in favor of the company's grunty 4.4-liter twin-turbo V8, the new super-sled is tipped to be even quicker. About a third-of-a-second quicker to 60 mph, with a top speed limited still to 155 mph but capable of 188 if de-restricted. Yowza.
The M division is said to have cranked some extra juice out of the twin-turbo eight, up from 555-horsepower to 578, coupled to 530 pound-feet of torque. That's more in both columns than the same unit in the X6 M or in the outgoing M5. All this while returning 30-percent better fuel economy. Regenerative braking is also expected to be part of the package, derived from Munich's now-defunct Formula One racing program. But those hoping for a wagon variant will be disappointed, according to Car mag, as BMW is reportedly axing the not-for-U.S. Touring bodystyle.