Even in Europe where natural gas prices are higher than in the US. the Eco Up! would be quite cheap to run: "in Germany, driving 100 km cost just over 3 euros in an eco up!; in Italy, the largest market for natural gas cars in Europe, the cost is even less than 3 euros. Today, it is not possible to drive any other all-round car this inexpensively!"
Go to page 3.