At its recent Innovation Day 2007 in Germany, BMW emphasized the role its new families of four-cylinder diesel and gasoline engines will play in increasing fuel economy while still delivering power and performance. BMW views its diesels in particular as a core technology in its strategy to reduce CO2 emissions. The new gasoline direct injection engines and the next-generation diesel engines, already being applied in new models, all offer lower weight, more power, greater fuel economy, and optimized emissions. In addition to the various improvements and modifications within the different engines, BMW is also adding auto stop start, regenerative braking, electrical power steering and improved on-demand ancillaries control to reduce fuel consumption. (Earlier post.) http://www.greencarcongress.com/2007/01/bmw_introduces_.html
High Precision Injection gasoline engines. The new series of four-cylinder gasoline engines features second-generation direct fuel injection: BMW's High Precision Injection, allowing lean burn operation of the engine throughout a wide range of engine speed thus helping to significantly reduce fuel consumption in everyday traffic despite increases in engine power...the engine offers a 14% reduction in fuel consumption
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