With the launch of the 2008 BMW 5-Series, the automaker also introduced a regenerative braking system, which is the first time such a system has been used on a non-hybrid car.

BMW’s Brake Energy Regeneration system works by harnessing the energy currently lost through engine over-run during braking. Using an intelligent alternator, which engages during braking, the system powers the battery to 100 percent with what would have been lost energy. It also reduces drag on the engine by only engaging and charging when required. The system cuts CO2 emissions and fuel consumption by around three percent.

BMW’s Brake Energy Regeneration is part of the company’s Efficient Dynamics program that aims to reduce vehicle weight, lower fuel consumption and improve efficiency in other areas such as aerodynamics, all with the aim of developing more power from less fuel in a lower-weight vehicle.

Video after the jump.

## Source: BMW ##

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