Most EGR valve replacements cost somewhere between £150 and £650. Where your car sits in that range depends mainly on your make and model and the price of the part it needs.
If the problem is a build-up of carbon, a garage may be able to clean the valve and refit it instead, which is usually cheaper than replacing it. If the valve is broken or stuck, it will need replacing.
Typical UK costs based on published industry estimates as of 6th October 2026. Prices are representative figures only as costs vary depending on your make and model, the parts used and your chosen garage. Enter your reg and postcode to compare local garages for your exact car.
Common symptoms of a failing EGR valve include:
Check engine light on the dashboard
Your car will struggle to accelerate
Increased fuel consumption, resulting in more frequent trips to the pump
Discoloured exhaust smoke
Reduced engine power or hesitation when you push the accelerator
Unexplained stalling
Your engine won’t sound right when idling, known as ‘rough idling’
If your exhaust is heavily smoking or you’re noticing increased exhaust emissions, it’s likely that you need some form of exhaust repair, and your EGR valve may be to blame.
Under inspection, your car will be suffering with one or more of the following issues:
Carbon buildup in the exhaust system that blocks the valve or passages
The valve itself is faulty, either sticking during normal use or being stuck fully open or closed
If you’re still unsure, or are suffering from different symptoms, it may be better to book either a diagnostic check or general repair at a local garage. They have access to specialist equipment to properly diagnose the issue, using the detailed description you provide as a starting point.
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