
But, what is an EGR.? What is an EGR valve? The majority of modern vehicles are designed to incorporate an Exhaust Gas Recirculation (EGR) system.

One method of reducing exhaust emissions is the use of after-treatment devices. Car manufacturers are having to make adaptations to the designs of their vehicles to meet the stringent limits. Regulations are becoming increasingly strict to combat the amount of GHG emissions emitted from road transport. Exhaust emissions from road transport contributed to 21% of UK greenhouse gas emissions (GHG emissions) in 2017, according to Office for National Statistics - UK Environmental Accounts. Over recent years, climate change has been a big concern in the UK.
