The rumors have been abound concerning the power system of the next BMW
M3. Well its turns out that the latest and most accurate rumor yet is that the new and powerful M3 will in fact feature a tri-turbo 3.3-liter 6-cylinder engine. One of the turbos will be powered by exhaust gas. The output could be an impressive 450hp and is coupled with a mixed steel/carbon fiber chassis to keep its weight down. This powerful combo should make for a pretty fast ride.