Another day, another early unveiling prior to the 2014 Detroit Auto Show, this time from Volkswagen AG with their 42-mpg Passat BlueMotion Concept.
The magic behind the concept's fuel economy lies within its turbocharged 1.4-liter gasoline four-pot; at city speeds, the engine deactivates two cylinders to boost economy, a feature already found in the automaker's Polo and Golf sold in Europe. Other fuel-saving methods include a stop-start system, and a coasting function that decouples the engine from the transmission when the driver lifts off the accelerator; the latter is already available in the Jetta Hybrid.
The above setup — which Volkswagen aims to evaluate for the U.S. market — improves upon the current base Passat's 34 mpg highway from its 1.8-liter turbocharged power plant, though horsepower drops from 170 to 150. The Jetta may also receive a similar package in order to improve upon its 32 mpg highway rating in an effort to catch up to more efficient offerings from Honda, Hyundai and Mazda.
from The Truth About Cars http://www.thetruthaboutcars.com
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