Catalytic Converter Replacement Near You

How Much Does a Catalytic Converter Replacement Cost?

A catalytic converter replacement usually costs between £300 and £1,000, depending on your car. The part itself makes up most of the bill, because catalytic converters contain precious metals whose prices rise and fall regularly.

Your make and model, whether your garage fits a manufacturer part or an approved aftermarket one and how easy the exhaust is to work on all affect the price you'll pay, which is why catalytic converter prices vary so much from one car to the next.

Typical UK costs based on published industry estimates as of 29th September 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 instant prices from local garages for your exact car.

What is a Catalytic Converter Replacement?

A catalytic converter replacement returns your vehicle’s exhaust system to proper working condition.

A catalytic converter, or cat for short, speeds up the removal of harmful exhaust gases produced during combustion, making your vehicle more environmentally friendly, in line with Euro standards.

The replacement process usually removes the faulty or worn-out catalytic converter and fits a new part in its place, but it can also involve fitting a completely new cat if yours was stolen.

Who Can Help with My Catalytic Converter Repair?

You can book a catalytic converter replacement at most static garages. Some mobile mechanics may also offer the service, but this is less likely as it is a lot of work to fit a new cat and can be difficult to do without a ramp.

Where Can I Book a Catalytic Converter Replacement?

To find a local garage to help you fix your catalytic converter, you can search directly for ‘catalytic converter replacement near me’ which will show a list of local garages that offer this service.

If you’re looking for the best place to replace your catalytic converter, you can either ask family and friends for a good recommendation or compare local garages to find the best one for you. We always recommend comparing your options before booking an appointment to ensure you get the right value for your needs.

What are the Signs My Car Needs its Catalytic Converter Replaced?

If you notice any of the following symptoms, then you may have a bad catalytic converter:

• An illuminated warning light

• Slower engine performance

• The engine cuts out

• Reduced acceleration range

• Increased fuel consumption

• Excessive white smoke

• Blue smoke

• A rattling noise from the exhaust

• Additional heat under your car

• Smell of rotten eggs from exhaust

• Dark smoke from exhaust

Another good sign you need to book a replacement is if you look under your car and can’t see your catalytic converter attached to the exhaust system.

Will a Faulty Catalytic Converter Fail Its MOT?

Yes, it can. During the MOT, the tester checks that your car's exhaust emissions are within the limits for its age and fuel type, and a catalytic converter that has stopped working properly will often push those readings too high.

A cat that has been removed or stolen means an automatic fail, as every petrol car registered since 1992 and every diesel since 2001 must have one fitted. If your engine management light is on because of a catalytic converter fault, that's treated as a major fault too, which is one of the ways an engine management light can cause an MOT fail.

Replacing the cat before your test saves you from an MOT failure and the retest that comes with it.

What Should I Do If My Catalytic Converter Has Been Stolen?

You'll usually notice straight away, as your car will sound much louder than normal when you start it. Report the theft to the police as soon as you can, as you'll need a crime reference number for your insurer.

Next, get in touch with your insurer. Comprehensive policies usually cover catalytic converter theft, subject to your excess, so it's worth checking your policy before deciding how to pay for the replacement.

Once you know where you stand, you can compare local garages and book a replacement. As it's illegal to drive without a catalytic converter, it's best to have your car recovered to the garage rather than driving it there.

Can I Replace a Catalytic Converter Myself?

No, you shouldn’t attempt to repair or replace your catalytic converter yourself. It’s a vital part of your exhaust system and you can cause serious and expensive problems if you botch a repair or replacement.

You should leave the repair to a professional, experienced technician who has the required specialist equipment to complete the job safely.

Why Book with BookMyGarage?

• BMG-Verified garages across the UK. Local businesses that offer great value and consistently meet service standards. Look for the BMG-Verified badge to find the garages we've ensured meet our high standards for customer service, ratings and reliability.

• We Show the Full Picture. All up front: prices, reviews, availability and distance, so you can choose the right garage based on what matters most to you.

• Real Reviews. Genuine, verified feedback from drivers like you. Every review helps you book with confidence.

• No Upfront Payment. We won't ask for any payment details when you book. Pay the garage directly once the work's complete.*

• Compare & Book in Seconds. See your options side by side and choose the right garage for you. No jargon. No stress. No surprises.

• Support Local Garages. We connect drivers with quality local businesses that keep communities moving.

*Some mobile technicians (that come out to you) may require an upfront payment or commitment, please check this with them first.

These are just some of the reasons to choose BookMyGarage – enter your reg and postcode to compare local garages and book your catalytic converter replacement in seconds. No surprises, no confusion – expect a straightforward service you can rely on.