INSPIRING DYNAMICS.
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BMW EfficientDynamics in the BMW X3.

The BMW X3 is ready for any challenge. This is especially true of its drive system. With intelligent technologies from BMW EfficientDynamics as well as its advanced energy management, it offers driving pleasure and agility, while reducing fuel consumption and emissions at the same time.

TECHNOLOGIES THAT UNITE DYNAMICS AND EFFICIENCY.

Economical BMW TwinPower Turbo engines, intelligent lightweight construction and refined aerodynamics are the ideal basis for efficiency, which is further increased by BMW EfficientDynamics technologies and options such as the eight-speed Steptronic transmission.

Intelligent lightweight construction.

A wide range of high-tech materials are used in the construction of the BMW X3, including lightweight aluminium in the front of the car and the chassis, high-strength steel in the body as well as ultra-modern plastics and magnesium. This intelligent lightweight construction reduces the weight of components and ensures outstanding body stiffness and excellent passive safety for drivers and passengers. It also improves the dynamic driving characteristics thanks to an even, well-balanced weight distribution between front and rear axles.

ENERGY MANAGEMENT.

The BMW X3 has standard-feature technologies on board that it uses intelligently for energy coordination. This energy management is key to its high level of efficiency. Only when all these technologies interact is the vehicle able to achieve its impressive figures for fuel consumption and emissions.
  • Optimal, perfectly-timed gear changes can help save fuel, particularly in urban environments and over long distances. Accordingly, the engine’s electronics system identifies the most efficient gear based on the driving situation and engine speed. An arrow lights up in the Info Display to show when it would be more efficient to shift into a higher or lower gear. The system also recognises when the car is accelerating quickly and will delay its recommendation accordingly until the engine speed has increased. Comparative tests have shown that vehicles with the Optimum Shift Indicator use around four percent less fuel.
  • Auto Start-Stop makes sure that fuel is only used when the car is actually driving. When the vehicle comes to a temporary standstill, for example at traffic lights or in stop-and-go traffic, Auto Start-Stop saves fuel by switching off the engine as soon as the car is idle and the foot is off the clutch (manual transmission), or when the car brakes to a complete standstill (Steptronic transmission).
    A signal in the Info Display indicates that Auto Stop-Start is active. As soon as the clutch is pressed (manual transmission) or the foot taken from the brake (Steptronic transmission), the engine turns itself back on automatically.
    Auto Start-Stop never compromises driving comfort and safety, as it remains inactive if the engine has not reached its ideal running temperature, the interior has not yet been sufficiently heated/cooled, the battery level is too low or the steering wheel is being turned. 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 fogged. Auto Start-Stop can be switched off at any time with the push of a button.
  • Every time the driver steers, energy is consumed. But energy shouldn’t be consumed when the wheel is not being turned. BMW Electric Power Steering is only active when needed, unlike conventional hydraulic steering systems. When the steering wheel is static – for example, when driving straight ahead along a motorway at high speed – the electric motor is inactive.
  • Every time the brakes are engaged, kinetic energy is generated and until recently this energy went unused. Brake Energy Regeneration takes advantage of this potential. It harnesses the coasting energy that is generated whenever the driver brakes or takes his or her 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 constantly, which reduces the strain on the generator. The result is reduced fuel consumption and increased performance – classic BMW EfficientDynamics.

Aerodynamics.

The entire vehicle design is testament to the BMW EfficientDynamics philosophy. Every BMW achieves excellent air resistance figures thanks to a range of mutually optimised aerodynamic elements, which in turn have a positive effect on efficiency and fuel consumption.
For example, the flat undercarriage cover with engine compartment and rear axle shield improve the car's aerodynamics. These new casing elements not only assist aerodynamics, they also improve sound insulation and provide greater protection from rust. Further innovations in aerodynamics include the defined rear spoiler lip and the aerodynamically optimised exterior mirrors. The latter improve the acoustics as well as the aerodynamics and prevent the side windows from getting as dirty.

ECO PRO mode.

The ECO PRO mode helps drivers reduce fuel consumption by up to 20 percent, depending on their driving style. The additional functions of Route-Ahead Assist (with Professional Navigation System only) and ECO PRO Route (with Professional and Business Navigation Systems only) can reduce fuel consumption by a further 5 percent.
  • In combination with the Active Cruise Control, the vehicle accelerates more efficiently after braking when in ECO PRO mode.
  • Based on data from the navigation system, the Route-Ahead Assist recognises curves, built-up areas, speed limits and motorway exits, and gives the driver tips in advance about when to stop accelerating.
  • Depending on the traffic situation, the driver's behaviour and road conditions, ECO PRO Route displays the most efficient course to take. The on-board computer shows the percentage of fuel that can be saved by taking the ECO PRO Route.

Eight-speed Steptronic transmission.

The eight-speed Steptronic transmission sets a new benchmark in dynamic performance and efficiency and is a key element of BMW EfficientDynamics. The particularly finely-tuned gradation of the gears allows optimum power delivery – at both low and high speeds. This reduces fuel consumption significantly, while allowing the driver to enjoy increased sportiness and dynamic performance. At high speeds in particular, the additional gears reduce engine speed, in turn decreasing both fuel consumption and engine noise.
The converter clutch also helps – even if the car is changed to the manual mode. In combination with the fast engine speed transitions and the precise transmission tuning, it provides a very high level of shift comfort and reduces noise considerably.

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