All three new VeeDubs will be powered by a 1.6-liter turbocharged diesel engine, and the BlueMotion model achieves a miserly 68.9 mpg on the combined cycle (57 mpg U.S.) and 107 g/km of CO2. That makes this new BlueMotion the cleanest and most fuel efficient Golf ever produced, no doubt assisted by its standard stop/start system, lowered ride height, low-resistance tires and aerodynamic enhancements.
The least expensive Golf TDI gets a 90-horsepower version of the 1.6 TDI that manages 62.8 mpg on the combined cycle (52 mpg U.S.) while producing 118 g/km of carbon dioxide. Move up the ladder one notch and you’ll get a 105-horsepower mill that matches the fuel mileage of its less powerful sibling and is available with an optional seven-speed DSG gearbox.
Source: Autoblog Green