BMW EfficientDynamics in the BMW 5 Series Sedan.

The BMW 5 Series Sedan also leads the way in efficiency. Every single BMW 5 Series has a package of measures and technologies from BMW EfficientDynamics, which significantly lowers consumption while decreasing toxic emissions, for even more driving pleasure.

BMW 520d.

BMW 520d.

The BMW TwinPower Turbo 4-cylinder diesel engine of the BMW 520d produces an exceptional 135 kW performance from its 2.0 litre capacity.


As soon as you switch to the ECO PRO Mode, everything is geared towards greater efficiency and depending on your individual driving style, this results in a reduction in fuel consumption of up to 20 percent (according to an internal BMW fuel consumption study).

The additional functions of coasting, preview assist and ECO PRO Route (both with Navigation System Professional only) enable another 5 percent in savings potential. This mode optimises accelerator and transmission response as well as shift points, and intelligently adapts the heating/air conditioning strategy. The Control Display shows you which EfficientDynamics technologies are currently lowering your fuel consumption. You'll also receive ECO PRO tips that relate to your current driving situation to help you boost efficiency even further.

  • Coasting

    Another feature of the ECO PRO Mode is the coasting function. If within a speed range of 50–160 km/h the driver takes their foot off the accelerator and does not brake, the system disconnects the engine and the car coasts – i.e. rolls without engine power.

  • Preview assist

    The preview assist in conjunction with the Navigation System Professional is an especially innovative highlight of ECO PRO Mode. Based on navigation data, it detects bends, built-up areas, roundabouts, T junctions, speed limits and highway exits along the route and is able to give you tips in advance to enable you to reduce speed early on. The proactive driving assist also efficiently controls the coasting function.

  • ECO PRO Route

    ECO PRO Mode also includes ECO PRO Route which combines with the new generation of Navigation System Professional to draw on various parameters such as individual driving style to calculate the most fuel-efficient route. The on-board computer displays how many additional kilometres you have gained from using ECO PRO Mode.


The entire vehicle design is testament to the BMW EfficientDynamics philosophy. The optimised, aerodynamic front apron and undercarriage feature innovative improvements that reduce air resistance and fuel consumption.

The entire front section embodies the BMW EfficientDynamics philosophy, including the newly designed front apron. The optimised design of the cooling air inlets also contributes to improved aerodynamics - thereby reducing air resistance. The same applies to the wheel arches, which are specially designed to reduce air swirl.

The flat undercarriage cover, which also shields the engine compartment, is an additional detail that greatly improves the car's aerodynamics. This new cover is not only advantageous in terms of aerodynamics, it also improves sound insulation and provides greater protection from rust.


Every time you brake, kinetic energy is generated and until recently this energy went unused. Brake Energy Regeneration takes advantage of this long-overlooked potential. It harnesses the coasting energy that is generated whenever you brake or take your foot off the accelerator and turns it into electricity.

This electricity is then used to charge the car battery. The intelligent energy management system means that the alternator no longer needs to run permanently, which reduces the strain on the generator. The result is reduced fuel consumption and increased performance, which is classic BMW EfficientDynamics.


The Automatic Start/Stop function makes sure that fuel is only used when your car is actually driving. Whilst waiting at traffic lights or in stop-and-go traffic, the Automatic Start/Stop function takes to save fuel by switching off the engine as soon as the car is idling and you have taken your foot off the clutch (manual transmission), or when you brake to a complete standstill.

A signal in the Info Display indicates that the Automatic Start/Stop function is active. As soon as you take your foot off the brake, the engine switches itself back on in a split second so you can continue driving without delay.

The Automatic Start/Stop function never combines driving comfort with safety, as it remains inactive if the engine has not reached its ideal running temperature, the interior has not yet been sufficiently heated/cooled, if the battery level is too low or if you are turning the steering wheel. A central control unit restarts the engine if required, even when the car is at a standstill. For example, if the car starts to roll forward or if the windscreen becomes foggy. The Automatic Start/Stop function can be switched off at any time with the push of a button.