The SEAT Mii Ecofuel is equipped with two CNG tanks with a total capacity of 11kgs supplying an Otto-cycle engine, and offering a range of 380 kilometers in gas-mode. Additionally, it has another 10-litre 95-octane premium petrol tank used as back-up when the gas supply runs out. All in all, this car has a range of 600 kilometers.
Currently, SEAT already markets the NGV Mii Ecofuel, its lowest-emission vehicle, in Germany, Italy, Sweden Austria, Switzerland and the Netherlands. Marketing of the new model will begin in Spain at the beginning of next year.