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 in Barnet

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 in Barnet

We’ll come to you at home or work

RAC Mobile Mechanic in Barnet

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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 your 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 do in Barnet

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

Mobile Mechanics and Tyres

Services provided: -- Can build and assemble machines or mechanical components according to requirements -- Able to Inspect machines, engines, transmissions etc. and run diagnostic tests to discover functionality issues -- Will aim to troubleshoot reported problems and resolve them in a timely manner -- Will perform thorough maintenance on machinery, equipment and systems -- Will clean and apply lubricants to components -- Will replenish engine fluids and components -- Will provide consultation on correct maintenance and preventative measures -- Can also undertake other duties (e.g. repair of hydraulic systems) -- Can provide logs of work and report on issues Experience: Proven experience as Mechanic for 12 years. Excellent knowledge of machinery and hydraulic, electrical and other systems and their components. Experienced in using various precision tools (I have equipment to perform most mechanical work). Will follow established procedures and practices with a strong commitment to health and safety. Very good communication skills with problem-solving capabilities. Very good physical strength and stamina Qualifications: BTEC national diploma motor vehicles (2 year course) HNC motor vehicles (1 year course) HND motor vehicles (1 year course) IMI (Institute of the Motor Industry) MOT Certification NT / AE / Site Manager Classes of Vehicles tested: Class Descriptionwheeled vehicles (over 450kg unladen weight) 4 Cars (up to 8 passenger seats) 4 Motor caravans 4 Quads (max unladen weight 400kg - for goods vehicles 550kg and max net power of 15kw) 4 Dual purpose vehicles 4 Private hire and public service vehicles (up to 8 seats) 4 Ambulances and taxis 4 Private passenger vehicles and ambulances (9 to 12 passenger seats) 4 Goods vehicles (up to 3,000kg design gross weight) 4a Class 4 vehicles (9 to 12 passenger seats) with a seat belt installation checkPrivate passenger vehicles and ambulances (13 to 16 passenger seats) 5 Private passenger vehicles and ambulances (more than 16 passenger seats) 5 Playbuses 5a Class 5 vehicles (13 to 16 passenger seats) with a seatbelt installation check 5a Class 5 vehicles (more than 16 passenger seats) with a seatbelt installation check 7 Goods vehicles (over 3,000kg up to 3,500kg design gross weight
Unit 4, Red Rose Trading Estate, Lancaster Road, Barnet, EN48BZ

SWIFTFIX MOTORS LTD

SwiftFix Motors provides expert car repair services, offering reliable mechanical repairs, fault diagnostics, and general vehicle maintenance to keep your car running smoothly. As a professionally registered motor vehicle repair business (SIC 45200), the team handles engine issues, brake repairs, suspension faults, warning lights, and general servicing. SwiftFix Motors focuses on high‑quality workmanship, clear communication, and dependable turnaround times, making it a trusted choice for drivers needing fast, effective repairs.
944-946 High Road, Finchley, London, N129RT

OGS Mechanics

Picking a reliable and competent vehicle repair centre can be tricky. Here at O.G.S. Mechanics we operate very strictly to the Motor Industry Code of Practice and our work is fully guaranteed. We are part of the RMI (Retail Motor Industry Federation) and Fully approved by the Trust My Garage Independent Garage Association. We are fully equipped with Main Dealer Level equipment and have outstanding mechanics all fully qualified and trained to achieve the best of their potential. We do not only deal with everyday servicing and maintenance, we rebuild engines, gearboxes, reprogram modules/keys, remap vehicles, offer DPF removal, remove seized injectors and many other various specialist services.
9-14 Millers Yard, Rear Or 28 Long Lane, Finchley, N32QG

Goodmans Autos

Established in 1962 we have been at our current premises in Borehamwood for the last 11 years. If you're looking for top quality car servicing from people you can trust, you've come to the right place. And if you're looking to save money on what it costs to service and maintain your car you've come to the right place too. That's because you get the best of both worlds ÔÇô quality and price ÔÇô when you choose Goodmans Autos. You get complete peace of mind with our fully qualified staff and genuine quality parts. And we won't do any service work or any repair without getting your agreement first.
16-20 Shenley Road, Borehamwood, WD6 1DS

Oakmere Service Centre.

Oakmere provide MOT testing 7 days a week until late, offering our services at a time that suits you. We have a comfortable waiting and viewing area with free Wi-Fi and refreshments, if you’d prefer to wait while we carry out your vehicle’s MOT. Competitively priced and with free re-tests available, contact Oakmere Service Centre today to book your MOT. Please do give us a call today to confirm that you have a valid MOT for your vehicle without any obligation. MOT inspections are a legal requirement for all cars over the age of three years old, certifying that the vehicle is roadworthy and safe. An MOT must be carried out annually, and performed by an approved vehicle testing station. When it comes to your car’s MOT, Oakmere Service Centre have the experience necessary to take care of every step. Our technicians are on hand to check your vehicle prior to the test, indicating any areas that may result in a failure – often, this can be something as simple as insufficient tread depth on your tyres – before ensuring that your car is roadworthy and in compliance with Driver and Vehicle Standards Agency (DVSA) regulations. COMPETITIVE PRICES HOME OR ROADSIDE RECOVERY FRIENDLY, HELPFUL STAFF LATEST DIAGNOSTIC EQUIPMENT OPEN 7 DAYS TILL 7PM FREE COLLECTION & DELIVERY SERVICE COURTESY CARS AVAILABLE RANGE OF CAR SERVICING OPTIONS
Hollies Way High Street, Potters Bar, Hertfordshire, EN65BH

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.