Top Mechanics For Mercedes-Benz Catalytic Converter Replacement & Repairs
65 Reviews
Garage in Lutterworth, 15 years of experience
Hello there! My name is Nathan. I have worked in HGV breakdown / recovery and been a mechanic for many years, offering over 15 years experience. I am happy to assist wherever possible with any car,...
SANDRA • 2nd January 2026
189 Reviews
Garage in Bethersden , 20 years of experience
I have been in the motor trade 20 years. During this time I have worked for independent garages including BMW and Mercedes main-dealers. I have progressed through the ranks as a master tech and workshop co...
GURMIT • 2nd January 2026
Land Rover Discovery Sport • Car Won't Start Inspection
4 Reviews
Garage in Wakefield, 11 years of experience
At Overdrive One Stop Service Ltd, we pride ourselves on delivering honest, efficient, and affordable vehicle maintenance and repairs. Since opening our doors in 2022, we’ve built a reputation in Wakefield f...
41 Reviews
Garage in Milton Keynes, 18 years of experience
MOT Plus MK is your local full service garage and automotive shop. We are fast, professional and reliable!
15 Reviews
Mobile mechanic in Croydon, 9 years of experience
11/2025 - Present: Proprietor/ Master Technician - Positive Vehicle Solutions (Croydon) 01/2025 - 11/2025: Proprietor/ Master Technician - Shiels Country Cars (N.Ireland) 12/2023 - 01/2025: Lead/ Master ...
379 Reviews
Garage in Doncaster, 15 years of experience
Having done my apprenticeship in an independent garage for 5 years then spending the Last year of the apprenticeship at Volkswagen and spent 7 years thereafter. Left VW for Peugeot then BMW for couple years....
KAVAN • 2nd January 2026
Ford Focus • Timing belt replacement
8 Reviews
Mobile mechanic in Southampton, 20 years of experience
Time served mechanic for adams morey Hurst auto assistance
KA • 2nd January 2026
BMW 1 Series • Bonnet lock clean and lubrication (bonnet wont shut)
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Garage in Merseyside, 5 years of experience
I have successfully carried out 100s of jobs in my years within the industry to a high standard and can offer services within my own garage or at roadside
CLAIRE • 2nd January 2026
13 Reviews
Garage in Norwich, 20 years of experience
I have almost 20 years of experience. I have worked in Car and Motorcycle dealerships. I'm a fully qualified level 3 diagnostic technician.
RICHARD • 2nd January 2026
Mazda Mazda2 • Car Won't Start Inspection
59 Reviews
Garage in Manchester, 20 years of experience
We offer, vehicle servicing and repairs alongside vintage restorations, caravan builds and tyre fitting.
106 Reviews
Mobile mechanic in Fleet, 23 years of experience
I started out my mechanic career with TVR for 2 years working on my apprenticeship before moving to and independent garage in North Camp to complete the apprenticeship and subsequently spent 3 years before g...
322 Reviews
Garage in Leicester, 15 years of experience
At J.J. Auto Repair we always aim to be helpful and friendly. We offer a range of services including, Mobile mechanic, Diagnostics, Full service, Multimedia system fitting, and more...
ALESSANDRO • 2nd January 2026
Alfa Romeo Giulietta • Diagnostic Inspection
19 Reviews
Mobile mechanic in Lowestoft , 6 years of experience
At East Point Tyres, we bring expert vehicle care directly to you! Based in Lowestoft, we operate within a 60-mile radius, offering mobile tyre services, emergency roadside breakdown recovery, mobile battery...
SIMON • 2nd January 2026
Mercedes-Benz GLA-Class • Full Service
229 Reviews
Garage in Cupar, 20 years of experience
Over 20 years experience in independent garages including bodyshop mechanic and also fiat and kia main dealer carrying out all types of repairs and mot testing
MYLES • 2nd January 2026
Vauxhall Astra • Car Won't Start Inspection
129 Reviews
Garage in North Devon, 30 years of experience
Hi my name is ant ,I have been in the motor trade for 30 years in main dealers and independent garages, so have a broad range of experience on pretty much all makes and models ,mostly Vw ,I do servicing ,cam...
JOHN • 2nd January 2026
Volkswagen Tiguan • 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
- Auto Demons Cymru, Ferndale
- Balmoral Motor Company, Dalkeith
- CMS, Rochester
- Collins & Co Mobile Mechanics, Halstead
- DELIVERY ON TIME LTD, Stoke-On-Trent
- FR Diagnostics, Leicestershire
- JPW Autos Surrey, Addlestone
- JTH Performance, Princes Risborough
- ML Autos And Recovery Ltd, West Malling
- SR Mechanic, Edinburgh
- Urban Autocare Ltd, Sawell
- W&M Motors, London
- WVG Autocare, Warrington
- Ynyshir Auto, Porth