However, natural gas is increasingly being used in the automotive sector as an environmentally-friendly motor fuel. There are currently around 100,000 natural gas vehicles on the road in Germany, and around 18 million worldwide. Because natural gas vehicles emit significantly less CO2 and other pollutants than conventional petrol or diesel vehicles, using natural gas vehicles makes a significant contribution to reducing CO₂ emissions. Rising motor fuel prices have led many motorists have already switched to natural gas – after all, natural gas’s cost-efficiency is an important point in its favour alongside its low emissions.