Top Mechanics For Smart/MCC Catalytic Converter Replacement & Repairs
175 Reviews
Garage in Northampton, 8 years of experience
As a dedicated mechanic, I take immense pride in my work, knowing that every repair and every adjustment I perform keeps vehicles running smoothly and safely. My hands are skilled, my mind is sharp, and my p...
MUNTAQA • 30th January 2026
Mitsubishi Outlander • Premium Pre-purchase Inspection
100 Reviews
Garage in Liverpool, 13 years of experience
Hello, I'm Alan. I am a experienced mobile mechanic and garage owner that serves Liverpool, and surrounding areas. I have years experience in the trade and industry, working on vehicles such as HGV for lead...
DOMINIC • 30th January 2026
Ford Transit • Bleed Hydraulic brake system - ABS
774 Reviews
Garage in London, 30 years of experience
We are a group of skill full and highly qualified technicians based in West London and we have been running a successful mechanic & mobile repair business. Have a good client base and we specialise in comi...
ERASTUS • 30th January 2026
Land Rover Range Rover Evoque • Premium Pre-purchase Inspection
142 Reviews
Garage in Crawley, 14 years of experience
Over the past 14 years we happily offered our clients services like:MOT reapairs,Full services,All Brakes sistem,diagnostic tests,engine rebuilds,turbo charges,gear boxes,timing belt kit,timing chain kit,hea...
FRAN • 30th January 2026
BMW 3 Series • Brake pads replacement - front (all)
147 Reviews
Mobile mechanic in Telford, 11 years of experience
Our mobile mechanics save the hassle of driving your car to a garage. Book your mobile car service online and we'll come to your home or office.
215 Reviews
Garage in London, 8 years of experience
I bring over a 8 years of hands-on expertise in the automotive industry, making me a seasoned car mechanic you can trust. Throughout my career, I've worked with a diverse range of vehicles, from compact cars...
GILLIAN • 30th January 2026
Ford EcoSport • Brake pads replacement - front (all)
153 Reviews
Mobile mechanic in Gravesend, 18 years of experience
MOBILE MECHANIC SERIVCE COVERING THE SOUTH EAST. Rated number 1 mobile mechanic in Gravesend 2023 & 2024 by Preferred Mechanic. We carry out vehicle maintenance and repairs for all makes and models, ...
TINA • 30th January 2026
Mercedes-Benz A-Class • Additional work following previous booking
103 Reviews
Garage in Kent, 16 years of experience
Covering Kent, South East London, Essex Fully qualified with 15+ years experience Breakdowns and Non starts Servicing and MOT Diagnostics and repairs Emergency call outs Vehicle health checks Engine m...
ALAN • 30th January 2026
Vauxhall Astra GTC • MOT with collection & delivery
26 Reviews
Garage in St. Helens, 8 years of experience
8+ Years of Experience | Specialist in Diagnostics & Preventative Maintenance Dedicated and highly skilled self-employed mechanic with over 8 years of hands-on experience providing reliable and honest autom...
29 Reviews
Garage in St Ives, 15 years of experience
30 years experience combined 20+ of those years within Lexus and Toyota, providing servicing, repairs and vehicle remapping in the Cambridgeshire area
26 Reviews
Garage in St Leonard’s On Sea, 9 years of experience
qualified mechanic with 9 years experience in light vehicle maintenance, specializing in clutch changes. fully insured and trusted by previous customers for return work
TYLER • 30th January 2026
276 Reviews
Garage in Maidstone, 23 years of experience
Car, Truck & Motorcycle repairs & re-builds. All aspects of servicing & maintenance. Pre MOT checks and tests arranged. Timing belts/chains, Head gasket replacement, Turbo replacements and upgrades, Custo...
GLEN • 30th January 2026
Mercedes-Benz CLS-Class • Diagnostic Inspection
46 Reviews
Garage in Sheffield, 9 years of experience
At KNCustoms, customer satisfaction is our priority. We provide high-quality workmanship at competitive prices. We specialise in vehicle servicing, MOTs, brakes, and general repairs. No job is too big or...
28 Reviews
Garage in Slough, 12 years of experience
Prime Motors is a trusted car repair and maintenance workshop dedicated to keeping your vehicle running safely and smoothly. With a strong focus on quality workmanship and honest service, we provide reliable...
STUART • 30th January 2026
Mercedes-Benz GLA-Class • Full Service
68 Reviews
Mobile mechanic in London, 15 years of experience
Auto Eng Repair is a well established repair company that has built up an enviable reputation over the last 15 years. We pride ourselves on our commitment to provide a professional and speedy service at all ...
Frequently asked questions about Smart/MCC 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 Smart/MCC 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 Smart/MCC 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 Smart/MCC?
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 Smart/MCC?
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 Smart/MCC 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 Smart/MCC 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 Smart/MCC catalytic converter replacement?
Yes, many local garages are able to offer collection and delivery for a catalytic converter replacement on your Smart/MCC. 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 Smart/MCC.
Can mobile mechanics do Smart/MCC catalytic converter replacement at my home or office?
Yes, mobile mechanics can do a catalytic converter replacement at your home or office on your Smart/MCC, 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 Smart/MCC catalytic converter replacement cost?
The cost for a Smart/MCC catalytic converter replacement depends on the model of your Smart/MCC. 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 | |
|---|---|---|
| Smart forfour | £310 | Get exact price |
| Smart fortwo | £558 | Get exact price |
| Smart Roadster | £272 | Get exact price |
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 Smart/MCCs
- AHMED MOBILE MECHANICS, Slough
- Abdulsamad Hamid T/A Autonex Mobile, Manchester
- Alletech Mobile Mechanic, Irthlingborough
- Amt Mobile Mechanical, Southampton
- Bkp Autos, Stevenage
- Cjl Automotive, Chatham
- Dpf Uk, Bexhill-On-Sea
- Gill Autos And MOT Centre Ltd, Ashford
- Gwent Mot Station, Ebbw Vale
- JPN Autos, Catterick Garrison
- Jb Auto Repairs, London
- Jdvehiclemaintenance, Bamber Bridge
- SHK Auto Mobile Mechanic, Woking
- Smiths Repair & Mot Ltd, Birmingham
- Southall Mechanic Services Ltd, Southall
- Tech And Tyres, Melksham
- Xp One Technical Ltd, Chelmsford