Volkswagen BlueMotion Powertrain Maximizes MPG without Minimizing Practicality
By: Jeff Youngs, 1/10/2014
For this concept vehicle, which is painted in a planned production color called Reef Blue Metallic, Volkswagen swaps out the standard turbocharged, 1.8-liter 4-cylinder engine in favor of a smaller turbocharged, 1.4-liter 4-cylinder engine. Torque figures are unchanged, measuring 184 lb.-ft., but the smaller motor does generate 20 fewer horsepower, coming in at 150 horsepower.
In addition to employing a smaller, less powerful engine, the Passat BlueMotion Concept is equipped with what Volkswagen claims is the first 4-cylinder engine in the world to offer cylinder-deactivation technology. The Active Cylinder Management (ACT) technology allows the engine to run on just two of its four cylinders under certain driving conditions. Additionally, an automatic start/stop system turns the engine off while the car is idling in traffic or at intersections, and when the driver lifts a foot to coast down a hill or in anticipation of a stop, the Direct Shift Gearbox (DSG) transmission decouples from the engine, allowing the Passat BlueMotion to roll with as little mechanical interference as possible.
Though just a concept for now, as evidenced by huge aluminum wheels that do nothing to improve fuel economy, a production version of the Passat BlueMotion is viable. Volkswagen could also extend this concept to the popular Jetta and other models in its lineup.
- 2014 Volkswagen Passat Overview
- Volkswagen Car & Truck Quality, Dependability & Performance Ratings
- 2014 Volkswagen Buyer's Guide