Vehicles produce CO2 when they use fuel. The amount of CO2 produced is directly linked to how much fuel it consumes. Excess levels of CO2 can be harmful to humans and the environment.

The Mazda 6, available between 2013 and 2023 is, we reckon, one of the best-looking large cars of its time - even the Tourer estate is stylish. The four-door saloon is the Mazda flagship, nonetheless: ...

Vehicles produce CO2 when they use fuel. The amount of CO2 produced is directly linked to how much fuel it consumes. Excess levels of CO2 can be harmful to humans and the environment.