BMW EfficientLightweight is a showcase example of how efficient and dynamic driving combine perfectly. Thanks to the use of especially lightweight and stiff materials, such as carbon in the passenger cell, aluminium in the chassis, high-strength steel in the body or ultra modern magnesium alloys in the engine, fuel consumption is reduced while at the same time driving performance and dynamics are improved.
With the first series-produced passenger cells made of carbon, BMW i has revolutionised automotive engineering, and set new standards for BMW in lightweight construction. Thanks to its high strength, the material offers passengers the best possible protection in accidents yet is still light enough to balance out the additional weight of the HV battery. The result is greater safety combined with a generous and comfortable level of spaciousness, which simultaneously saves weight – and thus further enhances dynamics.
The BMW i3 and BMW i8 are the first vehicles in which the high-tech material carbon has ever been used for large-scale series production. For a long time, the use of carbon was limited because it had to be produced manually. Today the BMW Group produces the carbon fibres and carbon fibre plates itself, which makes large-scale series production possible.