Car Diagnostics | Book a Car Diagnostic for your BMW

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 BMW models such as 1 Series, 3 Series, X1, X3, and 2 Series. This service is completed at your home or workplace, following BMW 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 BMW

We’ll come to you at home or work

RAC Mobile Mechanic for your BMW

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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 BMW

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

Kingz Auto Centre ltd

5.0/5

Kingz Automotive, Your One Stop Car Shop for Repairs. Services we offer: - MOT's - Service - Tyres - Clutch - Suspension - Exhausts

263-265, Aylestone Road, Leicester, LE27QJ

Dino Motor Company Limited

5.0/5

We are a newly established garage, we are looking to build a healthy customer base, we operate on a commercial site located between the A30 and A33, perfect for commuters with our long oopening hours it is easy to drop off before work and collect after!. We specialise in servicing, and smaller jobs (Brakes, Suspension, Clutches, Gearboxes) but can do the major jobs aswell!

Brickhouse Farm Commercial Unit, Brickhouse Hill, Eversley, RG270PY

Precision Autos Ltd

5.0/5

Established in November 2022 we are a freshly set up automotive repair shop based in South Molton, North Devon. We undertake many different types of vehicle repair and have a vast array of equipment in order to accommodate most types of repair necessary to vehicles old and new! We have over 25 years of experience repairing, fault finding and modifying in all aspects, from bulb changes to engine rebuilds, rewiring to restoration, tyre puncture repair to race car preparation, from brake pad replacement to full brake upgrades. We like to offer a trustworthy and honest approach to car repair, often going beyond what is necessary to keep you safely on the road. We also like to show you and explain potential problems and what they may cause giving you choices for the cost conscious motorist. Tea and coffee is very much available, made to your liking! So whether you want a chat about a slight rattle, or to book in for the Precision treatment, we're here for you and your vehicle, on hand with a proper brew and a friendly service.

Precision Autos Ltd, Units 9 And 10 J Bucknell Way Pathfields Business Park, South Molton, EX363FU

CENTRAL AUTO REPAIRS LTD

4.4/5

Central Auto Repair Services is a place where we repair cars with the utmost care and attention. While you can go to several other garages for the same work, we give you plenty of reasons for why should you rather visit us. Since its establishment, Central Auto Repair Services has never stopped evolving and upgrading its facilities and services. We want to make sure that we take care of your vehicles in the best possible way, as it is something that you treasure so much. Over the years, word of mouth has been our biggest advertisement method. We have made sure that we provide our customers with nothing less than satisfaction, while they let others know about our standards as well. From a small garage run by a family to being one of the best garages in the city, Central Auto Repair Services has a story of its own. While the first technicians were none other than the family members, we now take pride in our extended family of experts. Over time, we have trained our technicians extensively to make sure that they deliver nothing less than quality services. We also make sure to help them gain confidence and fluency with their work, which is helpful when someone asks for advice related to their cars. They are now some of the best technicians in the city which is all thanks to their years of hard work and dedication. While our experts have contributed so much time in making themselves better and more efficient, we considered it our duty to help them as well. We make sure that the latest pieces of equipment are available at Central Auto Repair Services. This helps them enhance their work quality even more while being able to satisfy our customers with more efficiency. Our customers have never had to complain about an issue that wasn’t dealt with properly, and neither about some issue which could be the result of our carelessness. We know that your time is precious, and so are you for us. We offer a wide range of best in class services for your car. We can efficiently deal with all the parts of your car like brakes, clutches, cambelts, wheel balancing and alignment, diagnostics, etc. We make sure that all of these services are dealt with the greatest care and no scope of error is left. As part of our efficient servicing system, all the cars undergo a complete check-up to ensure that the work done is proper and effective. Central Auto Repair Services are not only known for their diagnostic services, but also for providing our customers with quality products. In case you are looking for a new set of tyres for your car, you can get some of the best ones from us. We have a wide range of latest tyres from top manufacturers like Bridgestone, Continental, Dunlop, Michelin, and Yokohama. We have a collection of all the types of tyres that they manufacture. From budget tyres to performance tyres, Central Auto Repair Services is a hub for all types of tyres. We work for your satisfaction and to gain your trust through our work. We promise to deliver nothing but top-notch quality services to our customers and never let them be in trouble due to our ignorance. Being a family-led business, we know what safety of your loved ones means and we make sure to never compromise it. Visit us at Central Auto Repair Services and you’ll never have to give it a second thought to visit us again. We believe that the only hard work that you should do is pay the bills, the rest is our stuff to take care of, and we do that damn well.

Central Auto Repair Services, Bridge Road Garage, Worthing, BN147BU

Auto Care Centre

4.7/5

We are an established local independent garage and are proud to be members of Autofirst Network – a nationwide network of independent garages operating to the Network’s 6 core values of Capability, Consistency, Care, Clarity, Cost Effectiveness and Customer Focus. For your added peace of mind we are members of the Motor Ombudsman service which is approved by The Trading Standards Institute.In short, we are a local garage you can trust offering you the support and service guarantees of a national network, giving you complete peace of mind. We cover the postcode areas and also offer courtesy cars and a free collection and delivery service.

88 Maidenhead Road, Windsor, SL45EL

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.