Advance sales of the Audi A3 g-tron began at dealerships in Germany, at a base price of €25,900 (US$35,400). Its 1.4-liter TFSI engine developing 81 kW (110 hp) can be operated using either natural gas, e-gas generated by Audi or gasoline. In pure e-gas mode, using the Audi e-gas fuel card, the g-tron is CO2-neutral, Audi says.
