Volkswagen just announced plans to unveil its new Passat BlueMotion concept at the 2014 Detroit Auto Show next week. The Passat BlueMotion shows the world that it’s possible to get good gas mileage without a hybrid powertrain – the vehicle is powered by a new version of Volkswagen’s 1.4L turbocharged engine, and it gets an impressive 42 miles to the gallon.

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The Passat BlueMotion’s new engine features the world’s first application of cylinder deactivation on a four-cylinder engine. The Active Cylinder Management system can deactivate up to two of the engine’s cylinders when they aren’t needed. The Passat BlueMotion’s powertrain also features a start/stop system and a coasting function that decouples the transmission to reduce drag.

The Passat BlueMotion is powered by a 150 horsepower 1.4L engine with 184 lb-ft. of torque, but thanks to these fuel-saving technologies it manages to get 42 mpg on the highway. The 42 mpg rating is a significant jump from the current Passat’s 1.8L engine and it also gives the Passat BlueMotion the highest fuel economy rating of any non-hybrid mid-size sedan.

Volkswagen hasn’t announced any production plans, but with other automakers like Ford introducing downsized engines, it’s only a matter of time until the 1.4L finds its way under the hood of the Passat.

+ Volkswagen