BMW considering turbos for its M models

MUNICH -- BMW's future M models may come with turbocharged engines, long taboo at the automaker's high-performance subsidiary. It has always preferred high-revolution, naturally aspirated engines.

The next M5, due out in 2011, is expected to get a twin-turbo V-8 instead of a naturally aspirated V-10, insiders say.

Variations of the twin-turbo, 4.4-liter V-8 that powers the X6 premium SUV on the test stand and generating "400 kW (536hp) and more of output," an insider said.

A source also said the company has had "good experience with the performance characteristics" of the X6-base engine, a 3.0-liter, six-cylinder biturbo. It comes "very close to a large displacement, naturally aspirated engine," he said.

The 580-horsepower Audi RS6 currently holds the performance title among German carmakers.


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