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"The Volkswagen Passat BlueMotion Concept is an interesting answer to a question that several car companies have recently forgotten to ask themselves: What&amp;#039;s the absolute best fuel mileage a car can get when powered by a gasoline engine? It&amp;#039;s a relevant question to ask. The majority of the American car-buying public still haven&amp;#039;t been won over by diesel engines, and some would rather avoid the complexity of a hybrid.  Using a 1.4-liter TSI engine, Volkswagen claims the Passat BlueMotion Concept gets an estimated 42 mpg on the highway. It achieves this figure through the use of turbocharging, direct injection, and Volkswagen&amp;#039;s Active Cylinder Management. In light throttle or cruising speed situations, the system deactivates the second and third cylinders. Volkswagen says it&amp;#039;s the first cylinder deactivation system application for an inline four-cylinder engine.   Other fuel saving measures include engine stop/start technology and a coasting function, also used on the Jetta Hybrid, in which the gearbox decouples the engine when coasting to reduce mechanical drag.  Compared with the showroom-spec 2014 Passat S, the BlueMotion Concept isn&amp;#039;t at much of a power disadvantage. The concept&amp;#039;s 1.4-liter manages 150 hp compared with the 2.5-liter in the Passat S, which produces 170 hp. The concept also betters the road car&amp;#039;s mpg figure by 10.  The BlueMotion Concept may not be groundbreaking stuff, but it represents Volkswagen by using all of its know-how (XL1 not withstanding) to make an affordable gas-powered sedan. You can also expect most of this technology to eventually trickle down to the rest of the VW range. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.roadandtrack.com/car-shows/detroit-auto-show/news/a6636/volkswagen-passat-bluemotion-concept/>