VW is showing off the Passat BlueMotion Concept at the Detroit Auto Show, showcasing how fuel-efficient a non hybrid gasoline engine can be. But is this really a concept? It looks like it could be ready for production already.

The study is powered by the 1.4 liter EA211 TSI engine with cylinder deactivation, sourced from Golf and Polo models. It packs 150hp and 184 lb-ft of torque, and the unit is mated to a DSG dual-clutch automatic transmission and delivers an estimated highway fuel economy rating of 42 mpg. (5.6 l/100 km).

The VW Passat BlueMotion is also fitted with a stop/start system and the coasting function. The latter further increases fuel efficiency when the driver releases the accelerator pedal, as the DSG transmission decouples the engine, allowing the car to roll with the lowest possible mechanical drag from the other moving components.