The primary gas emitted by vehicles is carbon dioxide (CO2). When fossil fuels like gasoline or diesel are burned in internal combustion engines, they release CO2 along with other pollutants such as nitrogen oxides and particulate matter. CO2 is a greenhouse gas that contributes to climate change and global warming. Reducing vehicular emissions is crucial for improving air quality and mitigating environmental impact. Governments worldwide are working towards regulations and initiatives to lower carbon emissions from vehicles through promoting electric vehicles, stricter fuel efficiency standards, and alternative transportation methods.