gas2.org/ Quote - 'The Euro 6 compliant version gets 54.7 mpg where as the US version will get around 42 mpg. ' Volkswagen showed off its latest roadster that is barely over a ton. It’s lightweight construction includes a soft top that is the lightest in its class. It paid off. It will take less than 6-seconds to hit 60 mph. Of course, it’s weight also pays off in fuel consumption.With a top speed of 140 mph, the 2.0-liter turbodiesel (TDI) delivers 258 lb-ft of torque.