Book a Car Diagnostic in Barking and Dagenham

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 Barking and Dagenham

We’ll come to you at home or work

RAC Mobile Mechanic in Barking and Dagenham

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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 Barking and Dagenham

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

First Auto Centre LTD

Specialising in all makes and models of vehicles, we pride our self on the quality of work provided by our skilled technicians. Our core value is to provide easy car care, fair and square! No hidden charges, no unnecessary upselling and crystal clear repairs are what you will find at First Auto Centre. Come down to our workshop and see for your self, easily located just off of Katherine Road in East Ham, E6 1JN the workshop has a modern waiting area with drinks and snacks available.

1 Lawrence Rd, London, E61JN

Prestige MOT Centre Ltd

Prestige MOT Centre offer a wide range of garage services including MOT & Servicing , also specializing in BMW, Mercedes, Porsche, Lexus and Land rover. We strive to make sure customer has up most satisfaction with the services we provide.

Unit 8 Cromwell Centre, Coppen Road, Dagenham, RM8 1HJ

Peter James Motor Group.

Peter James Motor Group was established in 2006. Consisting of an RAC Approved MOT/Service Centre and two BSi Accredited Bodyshops based in Dagenham, Essex. Our Technicians are fully trained and receive regular update training to ensure we repair your car or van right first time, every time. We undertake repairs to most makes and use the latest diagnostic technology equipment. Our services are offered to private retail, fleet, warranty and insurance customers. For those that prefer we can collect, deliver or recover vehicles in need of repair. Our prices are competitively priced. Good, friendly customer service is vitally important to us and central to our company ethos. All repairs are guaranteed for 12 mths/12,000 miles and a come with a lifetime guarantee on body and paint repairs. If this is your first time, why not give us a try? Thank you. :-))

Bull Corner, Rainham Road South, Dagenham, RM108YT

carmechaniclondon.com

Our expert car mechanic London provides comprehensive accident repair services. Trust our reliable car mechanic London for thorough MOT testing, ensuring safety and environmental standards compliance. Our London-trained mechanics optimize engine power, improve fuel efficiency, and fine-tune mechanical components. Benefit from our specialized tuning services tailored specifically for hybrid vehicles. Trust our proficient car mechanic London to optimize your electric vehicle’s efficiency and performance.

418, Romford Rd, London, E78DF

RJ PERFORMANCE LTD

Our Mission At RJ Performance, our mission is to provide top-quality auto repair services that exceed customer expectations. We believe in transparency, honesty, and delivering exceptional value to every client.

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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.