Diesel exhaust

Diesel exhaust is the exhaust gas produced by a diesel engine, plus any contained particulates. Its composition may vary with the fuel type, rate of consumption or speed of engine operation (e.g., idling or at speed or under load), and whether the engine is in an on-road vehicle, farm vehicle, locomotive, marine vessel, or stationary generator or other application.

Diesel exhaust causes lung cancer and other diseases such as asthma, and many premature deaths. Methods exist to reduce nitrogen oxides (NOx) and particulate matter (PM) in the exhaust.

Some countries have set a date to stop selling diesel vehicles, and some city centres will ban diesel cars.