What Is a BMW EGR Valve?
Your EGR (Exhaust Gas Recirculation) valve reduces emissions by feeding exhaust gases back into the engine. Over time, soot builds up and causes rough running, higher fuel use, or MOT failure.
Common BMW EGR Symptoms
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Loss of power or poor acceleration
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Black exhaust smoke
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Rough idle or stalling
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Check-engine light (EGR fault)
How to Fix It
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Clean – use EGR cleaner if buildup is light.
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Replace – best for long-term reliability and MOT compliance.
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Bypass kit (off-road only) – for motorsport use, not legal on UK roads.
Find EGR cleaning kits, replacements, and off-road parts at Tealka.co.uk.
Prevent Future Problems
Use quality diesel, drive longer distances, and keep up with regular servicing to avoid future EGR faults.