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Good ideas don’t always have to be complicated: thanks to targeted aerodynamic measures such as air vent control, the active rear spoiler or the Air Curtain in the front apron, your BMW is able to achieve an optimised drag coefficient. This has a positive effect on efficiency and driving stability while also reducing the noise level in the cabin.


The active air stream kidney grille knows when engine,
brakes and other components need air and automatically
opens the air vents. If no further air intake is required,
it closes them again. This improves aerodynamics, and
fuel consumption falls.


While you control your vehicle, the Air Curtain controls
the airstream. This is because it reduces the air resistance
of the body in an astonishingly simple, yet highly effective
way. Its narrowing channels speed up the airstream and guide
it past the wheels. This reduces the air turbulence in the wheel
housings and decreases the drag due to the body as well as the
fuel consumption and CO2 emissions.


You accelerate. You’re moving faster and faster. But you still cannot
detect any air resistance. This is because the Air Breather channels the
air on the front wheels. It reduces turbulence on the wheel housings
and breaks down the air swirls. Fuel consumption and CO2 emissions
are decreased.


As speed increases, there is a rise in the forces acting on the body
of the vehicle. At a speed of 68mph, the active rear spoiler extends
automatically. Drag is reduced, roadholding is optimised, lift on the
rear axles is decreased. In addition, fuel consumption and thus
COemissions are reduced. At a speed of 43mph, the rear spoiler
retracts automatically.


The Air Blade is a sharp-edged extension of the C-pillar that separates the
air flow and thus reduces the wake behind the vehicle. This lowers the
aerodynamic drag at the rear, which in turn reduces both fuel consumption
and CO2 emissions.


An easy match against the wind: Flow-optimised aero wheel rims
in Turbine styling guide the airflow optimally along the sides of
the vehicle and thus enhance its aerodynamics.


Streamlined body shell, a striking conical shape and low weight – the BMW i8 clearly displays its character as a thoroughbred sports car. An array of aerodynamically optimised features ensure that maximum dynamics and optimum efficiency are achieved. One example of this can be seen in the LED rear lights, which are created to layering design principles and constructed as air channels through which the airstream flows.
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