A customer in the garden with an RAC Mobile Mechanic in the background.A close-up of a customer tending to her garden with an RAC Mobile Mechanic in the background.
Service, Repairs & MOT

Glow plugs repair for your Mercedes

Book an RAC Mobile Mechanic and we’ll come to you at home or work.

  • 12-months parts guarantee
  • Honest pricing
  • Exceptional customer service

Trustpilot rating for all RAC Mobile Mechanics.

Why choose the RAC for a glow plug repair?

At the RAC, we've got over 125 years' experience helping UK drivers. We have the skills and knowledge to keep your vehicle running.

Plus, with RAC Mobile Mechanics, you can avoid the hassle of taking your vehicle to a garage when you need a repair. We’ll come to you, at your home or work.

Close up of an RAC Mobile Mechanic underneath a car

Our top pick for your Mercedes

We’ll come to you at home or work

RAC Mobile Mechanic for your Mercedes

At the RAC, we’ve got over 125 years’ experience in offering complete peace of mind to our members. We’re best known for our breakdown service. And now – our new RAC Mobile Mechanics are here to help make every day motoring easier. If you need a service or repair, they’ll come to you at your home or work.

A customer tending to her garage with an RAC Mobile Mechanic in the background

Book a glow plugs repair

If your diesel engine is having trouble starting, especially in cold weather, it could be faulty glow plugs. Our mobile mechanics can come to you at home or work to replace defective parts, all without the hassle of getting to a garage!

We use original equipment manufacturer (OEM) standard parts, which means every new part will be the same standard and same quality as the original part it replaced.
Our mobile mechanics are friendly, honest, and backed by the RAC.
Close up of an RAC Mobile Mechanic running a vehicle diagnostic check

Vehicle diagnostic check

£99

We’ll spend up to 30 mins checking our car’s onboard management system for faults. We’ll talk you through repairs needed and provide a full report. If any further work is needed, we’ll agree this with you before we start. Any additional work after the first 30 minutes will be priced at £20 per 15 minutes. We’ll agree this with you before proceeding.

We’ll look for any mechanical or electrical problems. If we need to, we’ll also check your car’s onboard engine management system. Depending on your car and issue, this will usually include: – Engine – Power steering – Brakes – Transmission – Exhaust system – Fuel injection system – Cooling system and air flow – Sensors
If we detect any issues, we'll talk through what needs to be repaired. We’ll give you a no-obligation quote to fix it on the spot, if we can. Or we’ll recommend a local RAC Approved Garage, and give you a full error report to take there.

And it’s not just glow plug repairs that we can do for your Mercedes

Mobile mechanics bring the garage to you, saving you the hassle of getting your car to a garage. If you need a service or repair, they’ll come to you at your home or work.

A close up of an RAC mobile mechanic looking under the hood of a car

Try one of our RAC Approved Garages

RS Workshop Ltd

5.0/5

Welcome to RS Workshop, where automotive excellence meets unmatched service! Our garage is your one-stop destination for all your vehicle needs, providing top-notch workshop services that cater to every make and model. At RS Workshop, we pride ourselves on offering a complete suite of automotive services to keep your vehicle running at its best. Diagnosis - Repairs - Servicing - Diagnostics - Coding - Clutches - Cambelts - Brakes - Electrics - Air Con - Performance Upgrades
Braydon Fields Farm Cottage, Swindon, SN50AG

Bird & Yates Motor Services Ltd

5.0/5

We are the longest running motor trade garage that have been serving Cannock and the surrounding area since 1919, we have an excellent reputation throughout the Cannock area which has been built on honest quality workmanship, a personal service and a fair price. We are an RAC & AA approved garage giving you peace of mind on the quality of our workmanship. Our fully trained mechanics have access to a full range of modern diagnostic equipment, and we are also members of the Retail Motor Industry Federation.
Unit H Progress Business Centre, Brookfield Drive, Cannock, WS110JR

Vagtec Motors

5.0/5

Your premier garage in West Bromwich for MOT Testing, Servicing, Repairs and Tyres, specialising in German Cars but welcoming all. Located just off Tunnel Road we provide quality MOT and tyres services to West Bromwich, Dudley, Walsall and the surrounding areas. Here in West Bromwich we pride ourselves on providing exceptional MOT testing as well as tyres and fitting, our vast expertise and experience mean you can leave your vehicle with us knowing you are in expert hands. Our fully qualified MOT mechanics can test class 4 vehicles (Car MOT).
Vagtec Motors, Tunnel Road, West Bromwich, B700RD

Kings Autos Ltd

5.0/5

I'm a NVQ level 3 fully qualified mechanic with 18 years experience. I specialize in Mazda vehicles as I worked for them for 15 years however I have worked with independent garages so I am proficient with all makes. We carry out all work from servicing to timing chains.
Kings Autos Ltd Unit 1 Phoenix Road, Lowestoft, NR337NP

Ayaz MOT Centre

4.6/5

Ayaz MOT Centre is a car and van repair & mot centre offering its clients the best possible service in order to meet their expectations. Not only prompt service will be offered, clients will be able to benefit from a clean, comfortable and welcoming waiting area with complementary hot drinks while they wait for their vehicles. The waiting area compromises of information desk and boards, Mot viewing area, complimentary tea.coffee facilities, customer toilets, social gaming and TV's that show the live workshop while your vehicles are in process along with tv entertainment. Alongside these, we guarantee our work quality, and should the repaired issue reoccur we offer one year labor guarantee and parts guarantee subject to suppliers warranty. Some of the services Ayaz MOT Centre offers are; servicing, new tyres, 3D Wheel alignment, Mot Testing(class 4 and 7), brakes, suspension, AC Gas filling (new and old), exhaust, transmission, steering, carbon cleaning, batteries, number plate fitting and general diagnostics.
48 Alexandra Road, Enfield, EN37EH

Frequently asked questions on glow plug repair

A glow plug heats the air in a diesel engine to help it start, especially in cold weather.

When a glow plug fails, your engine might be hard to start, producing more smoke, engine misfires, and poorer performance.

You can, but it’s not a good idea. It can lead to poor engine performance, increased emissions, and overall damage.

Glow plugs typically last between 60,000 to 100,000 miles. Read your car’s manual and have them checked regularly.

It’s tricky and needs specific tools, so it’s best to let a mechanic handle it.

Replacing faulty glow plugs can improve engine start-up, reduce emissions, save fuel, and prevent engine damage.

It depends on your car’s warranty terms. They’re often not covered since they’re a wear-and-tear item, check with your warranty provider.

Yes, all diesel engines use glow plugs for starting, especially in cold weather. Regular maintenance and replacements are vital for the best performance.

Failures can be due to electrical issues, carbon build-up, corrosion, or incorrect installation. Regular maintenance helps prevent this.