The M6 version was initially introduced as a coupé at the
2005 Geneva International Motor Show, and later in convertible form at the
British International Motor Show in 2006. The M6 is powered by the 5.0-litre naturally aspirated S85 V10 shared with the E60 M5, generating at 7,750 rpm and at 6,100 rpm. The majority of the cars were produced with a 7-speed
automated manual transmission ("SMG III"), however a 6-speed manual transmission was also available in the United States. The M6 coupé has a carbon fibre roof in order to reduce weight and for a lower centre of gravity. Additional features included: sports seats, larger front and rear brakes, an M-performance instrument cluster, a carbon-fibre roof (coupé only), and an optional M head-up Display. The car also has quad exhaust-pipes and larger, more aerodynamic air intakes. A total of 9,087 coupés and 5,065 convertibles were built; amounting to 14,152 cars. == Yearly changes ==