The EGR in a diesel engine plays a significant role in your vehicle's overall performance, but what is it exactly? Here's everything you need to know.

Gasoline EGR valves are very similar to high-pressure ones. The vacuum created by cylinder depression draws the exhaust gases in, and the flow is regulated by the opening and closing of the EGR valve.

A look into the exhaust gas recirculation, or EGR, valve - an important piece of the automotive emissions system.

Should Volkswagen replace the broken EGR valve on my Volkswagen Touran? I have just had my 2013 Volkswagen Touran recall part changed, it was an NOx engine control unit (23R7), and only 5 days later ...