Least polluting fuel for vehicle is

The least polluting fuel for vehicles is Compressed Natural Gas (CNG). It is widely recognized as an environmentally friendly alternative to traditional fossil fuels like petrol and diesel.

Why CNG is the Least Polluting Fuel?

1. Lower Emissions:
   • CNG produces significantly fewer harmful pollutants such as carbon monoxide (CO), nitrogen oxides (NOx), and particulate matter (PM) compared to petrol and diesel.
   • It emits fewer greenhouse gases, including carbon dioxide (CO₂), reducing its contribution to global warming.
2. No Residual Waste:
   • CNG combustion leaves no residue like soot or ash, unlike diesel engines that emit particulate matter.
3. No Lead Content:
   • Unlike leaded petrol, CNG is free of lead, making it safer for the environment and human health.
4. High Combustion Efficiency:
   • CNG burns more completely due to its simple molecular structure (methane, CH₄), leading to higher fuel efficiency and cleaner emissions.
5. Reduced Smog Formation:
   • The use of CNG reduces the emission of hydrocarbons, a primary component in the formation of smog.

Other Alternative Fuels

Conclusion

CNG is considered the least polluting fuel due to its lower emissions, higher combustion efficiency, and minimal environmental impact. However, the adoption of other alternatives like electric and hydrogen fuel-powered vehicles is growing as technology advances and renewable energy sources become more accessible.