• Image Credit: Volkswagen
  • Image Credit: Volkswagen
  • Image Credit: Volkswagen
  • Image Credit: Volkswagen
  • Image Credit: Volkswagen
  • Image Credit: Volkswagen
  • Image Credit: Volkswagen
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Volkswagen is constantly searching for ways to bring fuel-efficient options to the midsize Passat - a smart strategy considering it competes in one of the most popular vehicle segments. You can already opt for a diesel-powered TDI model, but the new VW Passat BlueMotion Concept hints at a future technology to improve fuel economy without resorting to hybridization.

Cylinder deactivation is pretty easy to understand in, say, a V8 or V12, where not all the pistons need to be firing all the time. But cylinder deactivation on a four-cylinder engine? That's something new, and precisely what Volkswagen has in store for us at the 2014 Detroit Auto Show.

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