Top Mechanics For Mercedes-Benz Catalytic Converter Replacement & Repairs
94 Reviews
Garage in Bristol, 15 years of experience
At Ottos Group, we strive to look after all your vehicle needs. Whether you are a business requiring fleet maintenance or a member of the public. We have facilities to cater for cars all the way up to large ...
MELISSA • 26th February 2026
Nissan Qashqai • MOT with collection & delivery
96 Reviews
Garage in Wickford, 13 years of experience
I started my mechanic career when I undertook my apprenticeship at M tech development who were a Volkswagen Audi specialist back in the mid 2000's. Following a great time here I then moved onto numerous inde...
FATAI • 26th February 2026
Peugeot 3008 SUV • Plug-in Diagnostic Inspection
110 Reviews
Garage in Aberdeen , 5 years of experience
Kosmo Cars offers a wide range of car mechanic services, including diagnostics, repairs, maintenance, and expert advice to keep your vehicle running smoothly.
MARTIN • 26th February 2026
BMW 5 Series • Brake pads replacement - rear (all)
14 Reviews
Garage in Peterborough, 23 years of experience
I have been in the industry for 23 years as a fully qualified mechanic. I am able to cover everything from routine maintenance to complex diagnostics and repairs. I have specialised in engine overhauls, tran...
853 Reviews
Mobile mechanic in London, 16 years of experience
I am a fully qualified and skilled mechanic - able to diagnose and repair vehicles also inspect them - i have worked on high end prestige vehicles including old classic cars as well as motor homes also thous...
219 Reviews
Garage in Walsall, 15 years of experience
AA Approved Repairer RAC Accredited Repairer NHS Discount Up to 30 Years Experience throughout the whole company Air Conditioning Service/Re-Gas
6 Reviews
Mobile mechanic in London , 21 years of experience
I am a qualified mechanic with 21 years of experience in the motor trade. During this time, I have diagnosed and repaired a wide range of mechanical issues across various vehicle makes and models, many of wh...
126 Reviews
Garage in Rhyl, 25 years of experience
Professional Bio I am a fully qualified mechanic with over 20 years’ experience delivering high‑quality automotive work across a wide range of tasks. My expertise includes general servicing, routine mainten...
67 Reviews
Garage in Saltney, 10 years of experience
We are a High performance specialist specialising in all things VAGroup from the mighty VW UP to the Audi R8 and everything in-between. We are equipped to deal with all of your needs on all makes and models ...
6 Reviews
Mobile mechanic in Exmouth, 10 years of experience
Mobile servicing mechanic - Roadside assistance mostly, EV Qualified also - 10 years of experience.
RICHARD • 26th February 2026
Renault Grand Scenic • Battery replacement (vehicles without stop/start system)
46 Reviews
Mobile mechanic in St Helens, 15 years of experience
I have worked with numerous companies such as kwik fit national tyres and more local garages
535 Reviews
Garage in Thornton Heath, 7 years of experience
Welcome to AUTO PRO, where automotive excellence meets customer satisfaction! With over 7 years of hands-on experience in the auto industry, we take pride in being your trusted partner for all things automot...
28 Reviews
Mobile mechanic in Pontefract , 10 years of experience
Thank you for choosing us . My name is Matt i am the founder of M.J.H autos . I have worked in garages for a lot of years now . And I have finally took the plunge and left the 9-5 . I guarantee every custom...
7 Reviews
Mobile mechanic in Totton, 12 years of experience
We offer a variety of services for you and your vehicle, from regular servicing to diagnostics and repairs. With over 12 years experience in the motor trade. I’ve spent time working on all sorts of vehicles ...
GAVIN • 26th February 2026
Ford Transit Connect • AdBlue system reset
71 Reviews
Garage in Stoughton, 20 years of experience
I started out when I was a teenager working on family and friends cars. I then started an apprenticeship where I was taught to do general mechanics alongside restoration and welding. Once I completed all my ...
REECE • 26th February 2026
Ford Fiesta • Full Service
Frequently asked questions about Mercedes-Benz catalytic converter replacement & repairs
Read our answers to questions about catalytic converter replacement costs, symptoms and more.
What does a catalytic converter replacement on my Mercedes-Benz involve?
- Mechanic will read the ECU for catalytic converter and oxygen sensor related problems.
- Mechanic will inspect the catalytic converter for damage.
- Mechanic removes oxygen sensor for further check and removal of catalytic converter.
- If necessary, the catalytic converter will be replaced.
- Mechanic will advise if other parts need to be replaced.
- Mechanic will run engine, check catalytic converter operation.
- Mechanic will make adjustments where necessary.
What are the symptoms of a bad Mercedes-Benz catalytic converter?
You'll know something might be wrong with your car's catalytic converter:
- When dark smoke is coming from the exhaust
- When the engine performance is significantly reduced
- When fuel efficiency is decreasing
- When you experience issues while accelerating
- When the smell of sulfur (rotten eggs) is coming from your car
- When the check engine light flashes up
How long does it take to replace a catalytic converter on my Mercedes-Benz?
On average, catalytic converter replacement times can range from just over 1 hour to 1.7 hours with an average of around 1.2 hours. The time that the job takes will depend on a number of factors, like your vehicle's make and model, year, as well as other factors. Select your car at the top of this page for information on job time and cost for your vehicle through ClickMechanic.
How often should I replace the catalytic converter on my Mercedes-Benz?
Catalytic converters are built to have a long lifetime, however over time the pores can become clogged, or overheating can cause physical damage. A damaged catalytic converter will emit more toxic pollution into the atmosphere. It is important to ensure the catalytic converter is always serviced as and when stipulated in the guidelines set out by your car's manufacturer.
How to protect your Mercedes-Benz Catalytic Converter from theft
There are ways to prevent the theft of your catalytic converter, mainly by making it harder to access and remove it. Below are a few suggestions on how to deter thieves or at least slow them down:
- Parking closer to walls, other vehicles or close to the kerb, to make climbing under your car more difficult.
- Marking the catalytic converter with an engraved serial number can allow easier tracing as well making it harder to sell
- Welding the bolts if the converter is bolted on. This does not stop thieves but makes it harder to remove the converter using only a spanner. The downside to consider is that it not only makes it harder for thieves but also mechanics when they are working on your exhaust system.
- Get a protective cover fitted to make it more difficult for thieves to remove the converter
- Get a catalytic converter alarm which is set off when the catalytic converter is tampered with
- Increased security measures, e.g. if possible park in a lockable garage, fencing, park in well-lit areas or CCTV ?
What is the average lifespan of Mercedes-Benz catalytic converters?
Catalytics converters usually last 100,000 miles or even the entire lifetime of the vehicle, however this can differ depending on how and where you drive, and other internal and external factors.
Can local garages offer home collection and delivery for Mercedes-Benz catalytic converter replacement?
Yes, many local garages are able to offer collection and delivery for a catalytic converter replacement on your Mercedes-Benz. With ClickMechanic collection & delivery is free if your vehicle is drivable. Once booked a mechanic will pick up the vehicle on the day and time of your choice, do the work, and return the vehicle at a time convenient to you. Simply enter your vehicle registration number and postcode to get an upfront price for a catalytic converter replacement on your Mercedes-Benz.
Can mobile mechanics do Mercedes-Benz catalytic converter replacement at my home or office?
Yes, mobile mechanics can do a catalytic converter replacement at your home or office on your Mercedes-Benz, provided there is a safe and sufficient space to conduct the repair or replacement. With ClickMechanic, once booked for a date and time of your choice, your booking will be offered to vetted mobile mechanics in your area.
How much does a Mercedes-Benz catalytic converter replacement cost?
The cost for a Mercedes-Benz catalytic converter replacement depends on the model of your Mercedes-Benz. See the averages for different models below. We use industry standard data & millions of data points so you know what you should be paying.
These estimates may include Clamps and paste and Catalytic converter.
| Name | Average Cost | |
|---|---|---|
| Mercedes-Benz A-Class | £376 | Get exact price |
| Mercedes-Benz B-Class | £332 | Get exact price |
| Mercedes-Benz C-Class | £429 | Get exact price |
| Mercedes-Benz Citan | £186 | Get exact price |
| Mercedes-Benz CLC-Class | £644 | Get exact price |
| Mercedes-Benz CL-Class | £734 | Get exact price |
| Mercedes-Benz CL Coupe | £734 | Get exact price |
| Mercedes-Benz CLK | £450 | Get exact price |
| Mercedes-Benz CLS-Class | £553 | Get exact price |
| Mercedes-Benz E-Class | £632 | Get exact price |
| Mercedes-Benz GLA-Class | £127 | Get exact price |
| Mercedes-Benz M-Class | £446 | Get exact price |
| Mercedes-Benz SL-Class | £664 | Get exact price |
| Mercedes-Benz SL-Class R129 | £411 | Get exact price |
| Mercedes-Benz SLK | £259 | Get exact price |
| Mercedes-Benz Sprinter | £562 | Get exact price |
| Mercedes-Benz Vito | £495 | Get exact price |
Average costs for 17 models not shown due to insufficient data. Show ∨
- Mercedes-Benz CLA-Class
- Mercedes-Benz GLC-Class
- Mercedes-Benz GLE Class
- Mercedes-Benz SLR McLaren
- Mercedes-Benz G Wagen
- Mercedes-Benz Viano
- Mercedes-Benz GLK
- Mercedes-Benz S-Class
- Mercedes-Benz GL-Class
- Mercedes-Benz R-Class
- Mercedes-Benz S-Class Coupe
- Mercedes-Benz G-Class
- Mercedes-Benz SLS
- Mercedes-Benz 814
- Mercedes-Benz Vario
- Mercedes-Benz Vaneo
- Mercedes-Benz V-Class
Estimates on average repair costs, such as the above results for a catalytic converter replacement, are based on ClickMechanic's quote data which combines multiple third-party sources. Actual costs may vary. We provide estimates on average repair costs for information only and accept no liability for any inaccuracies or errors. If you think an estimate is incorrect, please contact us to let us know.
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Mechanics that work on Mercedes-Benzs
- Five Star Auto Centre Ltd, Huddersfield
- Fizz Consultancy Ltd T/A Bridge Mot Centre, Ipswich
- JF Services, Stockport
- Limitless Autos Ltd, Hastings
- MAD Motors, Heacham
- MOT TEST CENTRE Trading As Newcrown Garage, West Midlands
- Marsh Auto Repairs, Nottingham
- Motorfix, Rochester
- P1 Mobile Mechanics, Essex
- Vehicle Installation Centre, Great Yarmouth
- Vicarius Automotive, Bristol