Gaseous-fuel powered vehicles are environmentally friendly, causing about 20 % less CO₂ emissions into the atmosphere than gasoline and diesel.

When using biogas, synthetic methane, or hydrogen produced from wind or solar power, the reduction of CO₂ emissions can reach nearly 100 %. In times of dwindling fossil resources, gaseous-fuel powered vehicles offer a medium and even a long-term perspective. At the same time, natural gas is convincing economically.