Following this morning's leak, new details are starting to emerge about the 2014 BMW M3 and M4 Coupe.

According to Autobild, both models have a 3.0-liter TwinPower Turbo six-cylinder engine that develops 431 HP (317 kW) and 550 Nm (405 lb-ft) of torque. This should enable the 1497 kg (3300 lb) M4 Coupe to accelerate from 0-100 km/h in 4.1 seconds and hit a limited top speed of 250 km/h (155 mph) or 280 km/h (174 mph) with the M Driver's Package. In terms of fuel efficiency, owners can expect to average 8.3 L/100 km (28.3 mpg US / 34 mpg UK) with CO2 emissions of 194 g/km.

Interestingly, the M3 sedan is quoted as having the same performance figures despite the fact that it weighs 1520 kg (3351 lbs).

If everything pans out, the M3 will cost "just over" €70,000 while the M4 Coupe will retail for €72,200.

Gallery: 2014 BMW M3 & M4 Coupe specifications released [video]

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