FAQs » Page 7 of 22 » BookMechanic.uk

Q: Is it a good idea to delete or blank off the EGR valve?

No — deleting or blanking off the EGR valve is not recommended. While some believe it improves performance, it can lead to increased emissions, higher engine temperatures, and long-term engine damage. It's also illegal in the UK to remove or disable emissions control systems, and doing so can cause your vehicle to fail its MOT and result in fines or penalties. Keeping your EGR system functioning properly is the safer, more reliable choice.

Q: Will replacing my EGR valve improve fuel economy?

Yes — in many cases, a new EGR valve helps restore proper combustion efficiency, which can lead to better fuel economy and smoother engine performance.

Q: How long does EGR valve replacement take?

In most cases, replacing an EGR valve takes between 1 to 2 hours. However, this can vary depending on the vehicle and how accessible the valve is.

Q: How much does it cost to replace an EGR valve?

The cost can vary depending on the make and model of your vehicle. On average, it ranges from £150 to £600 including parts and labour. We offer competitive pricing and can provide a free estimate.

Q: Can I drive with a faulty EGR valve?

While it may be possible to drive for a short time, it’s not recommended. A faulty EGR valve can cause long-term damage to your engine, reduce fuel efficiency, and increase emissions. It's best to get it checked and replaced promptly.

Q: How do I know if my EGR valve is faulty?

Common signs of a faulty EGR valve include rough idling, poor acceleration, increased fuel consumption, engine warning lights, and failed MOT emissions tests.