Here is a link to the new golf and a good list of its features
Green Car Congress: MQB-based 7th gen VW Golf up to 100 kg lighter and 23% more fuel efficient than predecessor; Golf BlueMotion delivers 3.2 l/100km (73.5 mpg US) and 85g/km CO2
from link:
In the Eco driving profile engine management, air conditioning and other ancillary systems are controlled such that optimum fuel consumption is achieved. In addition on vehicles with DSG when driving in Eco mode there is a coasting function available. If a driver takes his or her foot off the accelerator—for example, when drawing up to traffic lights or on downhill stretches—the DSG disengages and the engine idles. As long as the driver drives appropriately, the Golf’s kinetic energy can thus be put to optimum use.