Top Mechanics For Smart/MCC Catalytic Converter Replacement & Repairs
94 Reviews
Mobile mechanic in Gloucester, 6 years of experience
6 years of experience in various garages and one year as a mobile mechanic
JANE • 13th December 2025
Hyundai i10 • Battery replacement (vehicles without stop/start system)
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Mobile mechanic in Hamilton , 15 years of experience
I have over 14 years of experience working on cars. I offer a range of services including Wrong fuel draining Add blue reset Car major servicing Exhaust work Hybrid Battery Repairing Suspension work ...
Garage in Southampton, 34 years of experience
With over 30 years of hands-on experience in the motor trade, I specialise in automatic gearbox repairs, full engine rebuilds, and electrical diagnostics and repair across a wide range of vehicle makes and ...
STEVEN • 13th December 2025
Honda Jazz • Car Won't Start Inspection
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Mobile mechanic in London , 10 years of experience
I have in this field from last 10 years I worked in Europe and from last 5 years I have been working in UK 🇬🇧 and I know the Japanese car and German cars <a href='https://www.clickmechanic.com/' title='Clic...
69 Reviews
Garage in Harrow, 10 years of experience
Fully qualified vehicle mechanic having previously worked at JLR and Ford dealerships as well as independent
MIKE • 13th December 2025
Ford Ranger • Diesel particulate filter (DPF) chemical clean and regeneration
20 Reviews
Mobile mechanic in Cambridge, 14 years of experience
Started out at Skoda from then Completing my Volkswagen apprenticship in 2015 Progressed on from there to Becoming a Porsche Certified technician in 2022 and Becoming a Porsche EIP Member (Electronically Ins...
75 Reviews
Garage in Wembley, 15 years of experience
Experienced Automative Mechanic with over 15years of hands on expertise in diagnosing and repairing vehicles. Specialised in repairing vehicle engines, Servicing, Clutch repair, Brake system and Electrical c...
IBRAHIM • 13th December 2025
Volkswagen Polo • Brake discs and pads replacement - front (both)
42 Reviews
Garage in Nuneaton, 20 years of experience
Commercial Breakdown (nationwide company) Vauxhall dealership BMW Dealership Independant Garages
RUPA • 13th December 2025
Ford Focus • Horn replacement
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Garage in Leeds, 19 years of experience
I’m 37 years old and I have nearly 20 years experience for all type of car! I been worked for an independent garage for 12 years, and also worked a many years for MOT base! Now I do my own mobile car and ...
HELEN • 13th December 2025
Vauxhall Zafira • Clutch replacement
87 Reviews
Mobile mechanic in Worthing, 13 years of experience
13 years within the industry both in an independent garage where I qualified through a City & Guilds apprenticeship programme and in main dealerships gaining further qualifications. My aim is to provide a...
DEL • 13th December 2025
Citroen Berlingo • Brake pads replacement - rear (all)
1 Reviews
Garage in Southend-On-Sea, 17 years of experience
WORK AS AIRCRAFT MECHANIC IN A SOUTHEND MAINTENANCE ORGANISATION SINCE 2008-2023 PART TIME MECHANIC AT SUN AUTOS 2012-2023 FULL TIME MECHANIC AT SUN AUTOS SINCE 2023 TO PRESENT DAY
TJ • 13th December 2025
Toyota Prius • Interim Service
39 Reviews
Garage in Wexham, 18 years of experience
I have been in the motor trade for 18 years. I have worked with multiple dealerships like Land Rover, Mercedes and BMW and have gained extensive experience over the years. I now work in a lovely garage on a ...
STEWART • 13th December 2025
Ford Focus • Battery replacement (vehicles without stop/start system)
269 Reviews
Mobile mechanic in Blackburn, 30 years of experience
A Dixon Autos is a mobile vehicle maintenance and enhancement company owned and run by Tony Dixon. Tony has worked in the motor trade ever since leaving school, and in 30 years he’s amassed a broad range ...
PAUL • 13th December 2025
Vauxhall Insignia • Battery replacement (vehicles without stop/start system)
58 Reviews
Mobile mechanic in Leeds, 20 years of experience
I am a fully qualified motor vehicle mechanic with over 20 years of hands-on experience in the automotive industry. I have extensive experience working as a mobile mechanic, carrying out repairs, servicing, ...
JADE • 13th December 2025
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
- 1979, Newry
- A.J.S Motorworks, Wellington
- AUTO MECHANIC RD, Wolverhampton
- HP EDMONTON MOT CENTRE, London
- Honest Ed's, Rochester
- Linden Motorcare, Basingstoke