See also:

Brake Energy Regeneration: an energy-saving innovation.
The new BMW 5-Series sedan continues the roll-out of BMW's Brake Energy Regeneration system on US models. To save energy and reduce the vehicle's fuel consumption over time, this system manages th ...

Capacities
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BMW ActiveHybrid X6
Like other so-called two-mode hybrids, the ActiveHybrid can accelerate gradually on electric power alone, up to 37 mph in the X6's case. All-wheel drive and a seven-speed automatic are standard. B ...