The primary gas released by cars is carbon dioxide (CO2). When fossil fuels such as gasoline or diesel are burned in an engine, they produce a range of gases, with carbon dioxide being the most significant byproduct. As a greenhouse gas, CO2 contributes to climate change and global warming when emitted in large quantities by vehicles. This has prompted efforts to reduce emissions through improved fuel efficiency, electric vehicles, and alternative energy sources. Addressing CO2 emissions from the automotive sector is a crucial step in promoting environmental sustainability and reducing the impact of transportation on climate change.