Book a Car Diagnostic in Borehamwood

Trustpilot rating for all RAC Mobile Mechanics.

Why choose the RAC for a car diagnostic?

With RAC Mobile Mechanics, you can avoid the hassle of taking your vehicle to a garage. They can do a vehicle diagnostic check on your driveway, so you don't even need to leave the house.

When it comes to diagnosing issues with your vehicle, our friendly expert mechanics are here to help. We use state-of-the-art diagnostic equipment to accurately identify any problems, ensuring your vehicle runs smoothly and safely. The price includes the diagnostic service – no hidden costs. Just friendly, honest experts.

Close up of an RAC Mobile Mechanic underneath a car

Our top pick in Borehamwood

We’ll come to you at home or work

RAC Mobile Mechanic in Borehamwood

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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.

Close up of an RAC Mobile Mechanic running a vehicle diagnostic check

Book a car diagnostic

Our mobile mechanics will spend up to 30 minutes checking your car for faults and talk you through any repairs you might need and give you a report for your records. There are various ways we can check for faults, which could include plugging in to check your car’s onboard engine management system.

OEM quality parts

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.

Mechanics you can trust

Our mobile mechanics are friendly, honest, and backed by the RAC.

Book a repair

It’s easy to book a car repair online. We bring the garage to you with RAC Mobile Mechanics, or find a trusted local garage. Common repair jobs include:

Clutch Replacement

We diagnose and repair clutch issues – whether your clutch is heavy or slipping, or you’re having trouble changing gears.

Alternator repair

We check and correct alternator faults to keep your charging system running smoothly.

Oil change

Oil is vital to a healthy engine, so it’s important to change it regularly.

Brake pads & Discs

If your brakes are making noise or you’re noticing reduced stopping power, it’s likely time to replace your brake pads or discs.

Average cost of a vehicle diagnostic by car make^

The RAC charges a flat rate for the cost of a car diagnostic but prices may change due to inflation. According to RAC data, the average cost of a car diagnostic is £87.

Make	Average price
Ford	£105
Vauxhall	£105
Volkswagen	£105
Peugeot	£104
Mercedes-Benz	£104
Nissan	£106
BMW	£107
Audi	£106
Renault	£104
Citroen	£104

^Average price quoted for RAC Mobile Mechanics from 01/01/25 to 31/03/25.

And it’s not just car diagnostics that we do in Borehamwood

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

View all garages

Auto Dynamics Barnet

Auto Dynamics provides a unique personal service within the automotive industry, If you drive it we can fix it! Where we provide in-house; mechanical, mot, electrical, bodywork including insurance and wheel repairs to your vehicle, TV de-restrictions and unlocking, professional installation. Mobile fitting is available upon request.

Auto Dynamics, R/O 17-19 Greenhill Parade, Barnet, (Behind Weavers Bar), EN51EU

Kwik Fix Motors LTD

Our business has been established for over two decades and we proudly work in partnership with Madena Motors, based in South Harrow. We offer a one stop shop, delivering services BSB or B2C. We cover a wide range of services from MOTs class& 7 along with repairs to all brands of vehicles. Our staff are fully qualified operating to DVSA standards. We are also an AA and RAC approved garage. Please feel free to contact us for all you motoring needs.

2A Tudor Road, Harrow, HA35PE

Universal Cars Ltd

Universal Cars Ltd has been in operation since 2015, carrying out all forms of mechanical repairs, maintenance work, servicing, MOT’s and bodywork in our garage, with no job being too big or too small. We also have a spray booth in our workshop to undertake all paint works. We carry out class 4 MOT’s and only use good quality parts to ensure your vehicle remains in its top condition always. Our team of 7 technicians are all fully qualified and ready to help get your vehicle road worthy again. We have specialist knowledge of Toyota and Honda vehicles however we have worked on all makes and models over the years, and continue to do so on a daily basis. We can provide you with a free vehicle collection and delivery service within 3 miles of the garage, or the use of our waiting room which has Wi-Fi and refreshments at your disposal.

219A Kingsbury Road, London, NW99PH

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

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 car diagnostics

How much does it cost to diagnose a car problem?

The cost you pay can vary depending on the type of car and how complicated the diagnostic test. Check with your mechanic for a quote.

Is a car diagnostic test worth it?

Yes, a diagnostic test may save you a lot of money. It finds issues early before they become costly repairs. It can also keep your vehicle running efficiently and safely.

Can I do a car diagnostic myself?

While you can buy a diagnostic tool, interpreting the results needs expertise. It’s best if you to have a professional mechanic perform the test.

How long does a car diagnostic test take?

Diagnostic tests take from 30 minutes to a few hours. This depends on what issues are being looked at.

What are common car diagnostic codes?

Common diagnostic trouble codes include:

P0300: Random/Multiple Cylinder Misfire Detected
P0420: Catalyst System Efficiency Below Threshold
P0171: System Too Lean (Bank 1)

These are general examples, so your car may have different codes. Always check with a mechanic so you get an accurate diagnosis.

Is a car diagnostic test necessary for a service?

Yes, they are. Regular diagnostics can help keep your car in good health. It makes sure that underlying issues are addressed quickly, so you can drive with peace of mind on the road.

Again, keep in mind that mechanics might have their own checklists. Chat with your mechanic to be sure that they address any specific issues you have.