BMW EfficientDynamics.

BMW Efficient Dynamics is an innovative programme to reduce fuel consumption and CO2 emissions while enhancing dynamic performance and driving pleasure. The long-term goal is fully emission-free mobility.

Between 1995 and 2010, the BMW Group reduced its CO2 emissions by more than 25%. A further reduction of 25%, in part through the use of electric cars, is planned by 2020.

Currently, in mid 2010, there are 30 BMW models that emit a maximum of 140 grams of CO2 per kilometre and 10 models are at the 120-gram mark. This success is the result of considerable technological measures like petrol engines with lean-burn technology and High Precision Injection, as well as new diesel engines with third-generation common rail injection and light-weight materials that lead to a 20 kg reduction in weight. The Auto Start Stop function, Brake Energy Regeneration, air vent control and tyres with reduced rolling resistance all lead to the same result: more dynamic performance from less fuel.

An important part of BMW EfficientDynamics is the research into alternative drive technologies and their integration into the product range. As early as 2006, BMW introduced the world’s first hydrogen-powered luxury sedan for everyday use, the BMW Hydrogen 7. At the heart of the vehicle is a bivalent twelve-cylinder engine that, at the touch of a button, can be run with either hydrogen or petrol.

A further example is the BMW ActiveHybrid X6, which combines a combustion engine with two powerful electric motors. Depending on the driving style, the drive forces come wholly from the electrical motors, wholly from the combustion engine or from a combination of the two. The result is up to 20 percent lower consumption and emissions values comparable to a similar vehicle with a conventional engine.

In 2011, BMW started a comprehensive field trial with the BMW ActiveE to see how suitable a fully-electric vehicle is for everyday life. The electric motor, high-voltage battery and power electronics are built into the bodyshell of the BMW 1 Series Coupé, where the former drive system was, and take up the same amount of space. For the study, 1,000 vehicles were loaned to test subjects in China, the USA and Europe. The results are used to develop concept vehicles ready for mass production.