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Official

GM, Jeep among others that've tried out mild-hybrid powertrains.

Two unidentified OEMs sign up for Delphi's mild-hybrid system, which can cut emissions by acting like a start-stop powertrain.

Official

Most cars use a 12-volt system to power their electrical components. But, with more and more electric bits and bobs being added to new vehicles, a dozen volts is looking a bit weak these days. In fact, Audi says that standard 12-volt systems are being stretched "to their very limits." Enter 48 volts.