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

Car diagnostic for your BMW

Book an RAC Mobile Mechanic to diagnose the problem at home and get £50 off repairs over £150

  • State of the art equipment
  • No hidden costs
  • Mechanics you can trust

T&Cs apply. Offer ends 03/08, 23:59.

£152.11

Average price for this repair for your Bmw in the last 30 days^

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 for your BMW

We’ll come to you at home or work

RAC Mobile Mechanic for your BMW

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.

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. Plus, when we’ve diagnosed the problem get £50 off mobile mechanic repairs over £150 – for a limited time only. T&Cs apply. Offer ends 03/08, 23:59. 

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

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:

We diagnose and repair clutch issues – whether your clutch is heavy or slipping, or you’re having trouble changing gears.
We check and correct alternator faults to keep your charging system running smoothly.
Oil is vital to a healthy engine, so it’s important to change it regularly.
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

WHEELBASE

5.0/5

Wheelbase 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 Basingstoke and surrounding areas and offer courtesy cars as well as a free collection and delivery service.
24B Victoria Way, Burgess Hill, RH15 9NF

Diplock Fuel Injection Services Ltd

5.0/5

We at Diplock Fuel Injection Services Ltd are a professional and friendly company based in Hailsham. Established since 1985, with individuals having over 50 years experience our car mechanics offer an array of car maintenance services. We specialise in diesel fuel injection and MOT testing, and can offer a comprehensive selection of repair work. We have built up a highly sought-after reputation and we come highly recommended by people in the trade. We also pride ourselves on offering very good rates on MOT tests; so please contact us for an unbeatable price!
Unit 3/4 Avocet Way, Diplocks Way, Hailsham, BN27 3JF

Brooklands Service Centre

4.7/5

Brooklands have been here for 25 years. We are proud in everything we do and carry everything out to a high spec. Brooklands technicians carry over 15 years of experience an have delt with many aspects of different makes and models over the year, they all carry the correct qualifications from MOT licence’s to NVQ 2&3. We ain’t afraid to to take on any job an work constantly around the clock the get vehicles back on the road the same day. We carry out a wide range of diagnostic test's and checks, to service and repairs we also do mot's. As on the otherhand we also carry out a wide range of body work and reapirs too..
162 Armley Road, Leeds, LS122TY

Budget Tyres & Motors LTD

4.5/5

Ealing Tyres Servicing & MOT provides extensive automotive parts repairs including tyres, brakes, exhausts, MOT testing, car servicing and air conditioning recharge. We're open 7-days-a-week from 8.30am to 7pm Monday to Saturday and 10 to 5pm on Sundays. We're the leading fast-fit supplier of tyres in the area and carry stocks of over 999+ products from leading manufacturers including Pirelli, Goodyear, Michelin, Continental and Dunlop. With over 9 Centres in the Greater London you're never far from a ETS where our teams can help you get back on the road.
2 Eccleston, West Ealing, Ealing, W130RL

Ayaz MOT Centre

4.6/5

Ayaz MOT Centre is a car and van repair & mot centre offering its clients the best possible service in order to meet their expectations. Not only prompt service will be offered, clients will be able to benefit from a clean, comfortable and welcoming waiting area with complementary hot drinks while they wait for their vehicles. The waiting area compromises of information desk and boards, Mot viewing area, complimentary tea.coffee facilities, customer toilets, social gaming and TV's that show the live workshop while your vehicles are in process along with tv entertainment. Alongside these, we guarantee our work quality, and should the repaired issue reoccur we offer one year labor guarantee and parts guarantee subject to suppliers warranty. Some of the services Ayaz MOT Centre offers are; servicing, new tyres, 3D Wheel alignment, Mot Testing(class 4 and 7), brakes, suspension, AC Gas filling (new and old), exhaust, transmission, steering, carbon cleaning, batteries, number plate fitting and general diagnostics.
48 Alexandra Road, Enfield, EN37EH

Frequently asked questions on car diagnostics

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.

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

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.

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

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.

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.