- Carbon dioxide (CO2): Carbon dioxide is the primary greenhouse gas emitted by cars. It is produced when fossil fuels, such as gasoline and diesel, are burned.
- Carbon monoxide (CO): Carbon monoxide is a poisonous gas that is produced when fuel does not burn completely. It can cause headaches, dizziness, and even death.
- Nitrogen oxides (NOx): Nitrogen oxides are a group of gases that are produced when nitrogen and oxygen in the air react at high temperatures. They can cause respiratory problems, such as asthma and bronchitis.
- Volatile organic compounds (VOCs): VOCs are a group of chemicals that are emitted from fuel and oil and evaporate easily into the air. They can contribute to smog formation and cause respiratory problems.
- Particulate matter (PM): Particulate matter is a mixture of solid and liquid particles that are suspended in the air. It can be emitted from the tailpipe of a car or from the wear and tear of tires and brakes. PM can cause respiratory problems, such as asthma and bronchitis.
