Compare Mercedes EGR valve repair quotes from specialist garages

In 1886, Karl Benz - the founder of Mercedes Benz - introduced what is often considered the first petrol-powered car to the world. The Benz Patent Motor Car was born, and with it began a legacy that continues today.

Style, luxury and innovation are the driving forces behind Mercedes. Not only was it one of the first car manufacturers to put brakes and suspension on all four wheels, but it was also the first to introduce safety crumple zones.

Cars by Mercedes have appeared on the big screen numerous times, from the S-Class used by Jason Statham in The Transporter to escape a gunfight to the 1969 280 SE Convertible driven by Hugh Grant in Bridget Jones's Diary.

See how Mercedes' maintenance costs compare with BMW's and Audi's here.

EGR stands for exhaust gas recirculation. The EGR valve links the intake manifold and the exhaust manifold. It plays a vital role in helping to reduce the amount of NOx emitted from a car. Learn more about how it works here.

Over time, EGR valves can become clogged due to a build-up of soot, and when this happens, an EGR valve clean or replacement is required. Common symptoms of an EGR fault include rough idling, erratic engine functioning (including stalling), increased fuel consumption and higher emissions.

Some manufacturers recommend using an EGR cleaning service every 50,000 miles; doing so helps prevent performance issues and extends the component's life.

EGR valves typically have a lifespan of around ten years. After this time, it's best to book an EGR valve replacement if you experience any of the symptoms listed above. A stuck EGR valve will speed up the process of the diesel particulate filter (DPF) becoming blocked.