BMW has released an inconclusive video teaser for the upcoming 2014 M3 Sedan and M4 Coupe which according to Internet rumors will be unveiled on Thursday. Both cars are going to get a 3.0-liter inline-six TwinPower Turbo gasoline engine outputting 430 HP and 500 Nm of torque. From what we know so far, the M3 is likely to be offered with an optional carbon fiber roof and will have a curb weight of less than 1,500 kg. Both cars are going to be shown to the public in January at the North American International Auto Show in Detroit.
