BMW officially introduced today the new M3 Sedan and M4 Coupe. As expected, the vehicles are powered by a new 3.0-liter high-revving six-cylinder in-line engine with M TwinPower Turbo technology that produces a maximum output of 431 hp and 550 Nm (406 lb-ft) of torque.
This means that the new six-cylinder engine delivers more power than the previous V8 found on the previous M3. With the new engine, the BMW M3 Sedan and the M4 Coupe sprint from 0 to 100 km/h (62 mph) in 4.1 seconds, while the top speed is electronically limited at 250 km/h (155 mph). Still, for those who want more, there is the optional M Driver’s Package, that raises the top speed at 280 km/h or 174 mph.
Despite these impressive numbers, fuel consumption in the EU cycle remains low: 8.3 l/100 km (34 mpg) and CO2 emissions of 194 g/km, an improvement of more than 25 per cent over the previous model’s figures.
Regulated pollutant emissions are EU6-compliant. On the outgoing model, the CFRP roof was offered only on the Coupe version, but now, for the first time, the four-door BMW M3 Sedan gets this functional feature as well. On the sedan, the CFRP brings weight savings of five kilograms and more than six kilograms on the M4 Coupe. Made from aluminium rather than conventional steel, the front side walls and the bonnet (with power dome) make an important contribution to the models’ lightweight design concept, while at the same time improving axle load distribution.
Viewed from the front, both the M3 Sedan and M4 Coupe show their powerful contours and a strongly defined three-dimensionality. At the rear, the M3 Sedan comes with a Gurney spoiler to reduce lift, while the M4 Coupe features an integrated spoiler made from lightweight carbon-fibre-reinforced plastic.
Inside, we find the traditional BMW M equipment such as M door sill finishers, an M driver’s footrest, M gearshift lever, M-design circular instruments with white graphics, M leather steering wheel with chrome trim, colour contrast stitching and electroplated- look shift paddles (if the M DCT gearbox is specified).
The most important features of the vehicles is the Smokey Burnout function that allows the driver to indulge in a degree of rear wheel spin while the car is moving at low speeds. Stability Clutch Control opens the clutch when the car is understeering to bring it back into line.
When developing new models, one of BMW M’s main priorities is the aerodynamics concept. To ensure that an M car could be the best platform for outstanding dynamism, M engineers saw the need to make air flow around the car. Likewise, there is the need to ensure that enough air is direct to cool down the engine, powertrain and brakes even while operating under heavy loads.
A number of aerodynamic elements are found or integrated on M models. For instance, the M3 Sedan features powerfully formed front apron, a smooth underbody and a Gurney rear spoiler. Meanwhile, the BMW M4 Coupe features an integrated spoiler lip on the rear of the BMW M4 Coupe. All these elements reduce aerodynamic lift both on the front and rear axles while allowing M models to offer great handling.
Albert Biermann, Head of Development at BMW M GmbH, remarked that the manner the inflowing air is channeled through the engine oil cooler creates a Venturi effect, which in turn reduces lift on the front axle, resulting to improved levels of steering.
On the other hand, turbulence in the front wheel arches is reduced by aerodynamic elements like the Air Curtain and M gills with integrated Air Breather located rearwards of the front wheels. These elements, along with the aerodynamically optimized twin-stalk exterior mirrors, are some of the distinctive design features of the BMW M3 Sedan and BMW M4 Coupe. Overall, these elements and feature are proof that M engineers were successful in resolving the requirements of everyday use and the demands on the race track.
As intended, the BMW M3 Sedan and BMW M4 Coupe boast of having tremendous performance potential. The better performer they are, the greater in the need to manage temperature in the engine and peripheral assemblies. There is a need to ensure that these models are always in optimum operating temperatures in any condition. Thus, BMW M GmbH engineers worked to develop an effective cooling system for these cooling needs.