How safe is it to drive on CNG?

Driving a car with CNG is very safe. The German Technical Inspection Agency "TÜV" has certified that the usage of CNG is as safe as that of petrol. The fire hazard is much lower and in cases of accidents, CNG is contained much safer in cylinders than petrol in ordinary plastic tanks.

The first reason for the high safety rating is the fact that CNG has an ignition temperature of about 600°C (which is approximately three times higher than petrol's ignition temperature). This means that the danger of an explosion, deflagration or a fire is much lower than compared with a petrol or a diesel vehicle. Secondly, CNG is lighter than air. Therefore, if a leak were to occur, the gas would simply rise up and quickly dissipate into the atmosphere.
 

Furthermore, CNG gas cylinders are built with special materials and are designed for the highest safety specifications. Our cylinders are tested and certified by the international research and testing agency Bureau Veritas in Argentina.

- Source: www.cng.com.sg