Car Diagnostics | Book a Car Diagnostic for your Citroen

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.

RAC Mobile Mechanics can carry out car diagnostics on popular Citroën models such as C3, C3 Aircross, C4, C5 Aircross, and Berlingo. This service is completed at your home or workplace, following Citroën maintenance guidance and using OEM‑equivalent parts. You get clear pricing, real‑time updates and a convenient, no‑hassle experience.

Close up of an RAC Mobile Mechanic underneath a car

Our top pick for your Citroen

We’ll come to you at home or work

RAC Mobile Mechanic for your Citroen

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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.

And it’s not just car diagnostics that we do for your Citroen

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

WINNERS CK LTD

5.0/5

Welcome to Winners, your premier destination for all automotive needs in Kettering! Located at 3 Alexandra Street, we proudly feature a top-tier MOT Center, a reliable auto repair workshop, and a state of-the art car wrapping service, providing you with unparalleled convenience and exceptional services. We are especially proud to work with NHS, UNITE, and offer Members Discounts for UK. customers, ensuring our services are accessible to everyone. Our dedicated team of professionals is passionate about delivering outstanding customer service and high-quality workmanship. At Winners, we take pride in exceeding your expectations. Whether you need comprehensive auto repair services, a reliable MOT, or want to transform the look of your car

3 Alexandra Street, Kettering, NN160SX

Apollo Servicing & Repairs Ltd

5.0/5

From diagnostics to repairs, we ensure your vehicle runs smoothly. We offer a wide range of services on all major makes & model of vehicle. As an independent business based in Wroxton, Banbury, we pride ourselves on providing customers an exceptional service at a affordable price without cutting corners. Services such as MOTs, Diagnostic, Tyres, Breaks, Clutches, Timing Belts, Air Conditioning, Exhausts, Servicing and Repairs. We have Courtesy Cars available, offer a Collection and Delivery Service, Health Checks and Recovery Services locally all free of charge. We have invested heavily into the best tools and equipment and have brand new facilities with a Waiting Area, Wifi, Parking, Drinks and Snacks. We look forward to welcoming you soon

Unit 8 Apollo Park Ironstone Ln, Banbury, OX156AY

Bodywyse Autocare Ltd.

5.0/5

.“Bodywyse Autocare Cupar Ltd is a one stop shop for all of your motoring needs. We offer a full range of services including Servicing, MOTs, Tyres, Brakes, 4 Wheel Alignment, Air Con and of course Accident Repair, along with any mechanical work you might need for cars and commercial vehicles. We are an insurance approved body shop, partnered with PSA’s own Eurorepar Car Service network and regulated by the Independent Garage Association. This means that we can offer a manufacturer level of service at a very competitive price whatever you might need. We offer fixed price servicing and all work is guaranteed, insuring a high standard of quality. We pride ourselves on our customer service and any of our staff will be happy to assist in helping with any requests you may have. Give us a call for all your vehicle needs.” At Eurorepar Car Service, we’re all about keeping you and your car moving with confidence. As a trusted network of local garages, we provide high-quality car maintenance and repairs tailored to your needs – all at competitive prices. With our exclusive Brakes for Life program and a 2-year parts and labour warranty, you can drive away knowing you’re covered for the long haul.* Ask your Eurorepar Car Service Centre to fit Eurorepar branded parts to qualify. Claims under the 2-year parts and labour warranty must be made at a Eurorepar Car Service Centre. Discover expert care, unbeatable value, and peace of mind – all under one roof. Ready to experience the Eurorepar difference? Request a quote or give us a call today! *Terms and conditions apply.

Prestonhall Industrial Estate, Cupar, Fife, KY154RD

Kissane and Jeffries (Recovery Services) Ltd

5.0/5

Kissane and Jeffries are a well established rescue and recovery company operating in the West Midlands and have been in the trade for over 30 years with proven ability to carry out a professional and competent service. We are constantly upgrading our fleet of breakdown and recovery vehicles and equipment to keep up with today's demands for the best in the business to ensure we can serve you as quickly as possible when needed. We also have comprehensive vehicle repair facilities available for most makes and models with very competitive pricing structures and a quality of service that will make you want to use us again and again, our technicians are ATA accredited and our workshops are registered to the BSi PAS 80 Standard. Customer satisfaction is our priority and we are focused on delivering a quality service whether it be as a one off job for an individual customer or one of the many jobs we carry out some of our blue chip clients, each and every customer is treated with the same high level of care, this is demonstrated with our commitment to the standards of ISO 9001 and PAS43.

Station Road, Rowley Regis, Warley, B65 0JY

Kmita Motors

4.0/5

We are a family run business providing excellent service to our customers. Our fully qualified and trained mechanics can offer all types of service repairs and diagnostic for any make of vehicle. We offer great service at affordable cost. Our mechanics hold a combined experience of motor vehicle repairs for over twenty years. They are fully trained and qualified, holding level 3 in motor vehicle repairs and obtaining a M.O. T Manager inspector certificate award.

85A Springhead Road, Northfleet, Gravesend, DA119QZ

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.