Regenerative Braking

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04-24-2007, 05:24 AM

#21

aybeesea

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Quote:

Originally Posted by narvselius' post='417171' date='Apr 24 2007, 02:22 PM

The Start-Stop function is due in the 5-series in September.

I would be pleased to see an external reference.

ABC

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04-24-2007, 06:36 AM

#22

seitch

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Quote:

Originally Posted by pharding' post='414526' date='Apr 16 2007, 09:53 PM

What is it and how much does it cost?

Normally your alternator runs all the time and this loads the engine all the time. Regenerative braking for BMW means your alternator only comes on when you're braking the car and your engine is no longer required to accelerate the vehicle. They estimate that this results in 3% better gas mileage.