Car Diagnostics | Book a Car Diagnostic for your Mazda

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 Mazda models such as CX-5, CX-30, Mazda2, Mazda3, and MX-5. This service is completed at your home or workplace, following Mazda 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 Mazda

We’ll come to you at home or work

RAC Mobile Mechanic for your Mazda

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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 Mazda

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

Clutchmaster Automaster

4.9/5

Clutchmaster was established in May 2000 by Dave Willcocks. Since then he has offered a "Second to none" clutch replacement deal for both public and trade customers. Due to our huge buying power we have been able to structure our prices accordingly, passing on superb savings. This makes Clutchmaster the best deal on BRAND NEW clutch parts not only in the Southwest but we believe Nationwide!!

Automaster Longcombe Cross, Longcombe, Totnes, TQ96PL

Tyre King Autocentres Long Eaton

5.0/5

At Tyre King autocentres, we are your trusted local mechanics, committed to keeping you safe on the road. With years of hands-on experience and a team of fully qualified technicians, we specialise in delivering top-quality vehicle maintenance, repairs, and diagnostics at competitive prices. Our workshop is fully equipped with the latest tools and technology, allowing us to handle everything from routine servicing to complex mechanical issues—quickly, efficiently, and to the highest standards. Our Specialities We offer a full range of professional automotive services, including: MOT Testing (Class 4) Fast, reliable MOTs to ensure your vehicle meets all legal and safety standards. Servicing (Interim & Full) Regular servicing to keep your car running smoothly, improve fuel efficiency, and avoid costly repairs down the line. Brakes Complete brake inspections, repairs, and replacements using high-quality parts for your safety. Tyres Supply, fitting, balancing, and alignment of new tyres from leading brands. We also handle puncture repairs. General Repairs From cooling and exhausts to suspension and diagnostics, we fix it all—honestly and efficiently. Why Choose Us? . Experienced Technicians Our mechanics are highly trained and experienced with all makes and models. . Transparent Pricing No hidden costs. We provide clear quotes and explain all work before we begin. . Customer-Focused Service We pride ourselves on honesty, reliability, and friendly service. Your satisfaction is our top priority. . Quick Turnaround We know your time is valuable—most jobs are completed same-day. . Local & Trusted Proud to be part of the local community, with many loyal customers and 5-star reviews.

Phoenix Mills, Nottingham Road, Long Eaton, Nottingham, NG102AA

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

Eastlake Garage

4.7/5

We are a well-established company with two sites in the local area, which have been in operation since 1999. We are AA, RAC and GREEN FLAG certified and are able carry out their breakdown and repair work and warranty work, as well as being Trading Standards approved and members of the Motor Ombudsman adhering to their strict code of conduct at all times. We are also Afilliated with the IMI We can offer our customers a free vehicle collection and delivery service within 10 miles of the garages, and we also offer discounts to NHS and Emergency Service staff members upon valid photographic identification.

Gaens Quarry, Porthcawl Road, South Cornelly , Bridgend, CF334RN

Dsr Autos Limited

4.6/5

If you’re looking for affordable quality work carried out by skilled technicians and delivered with great customer service in Leicester then you’re in exactly the right place. We are one of the leading independent motor vehicles repair specialist garages in Leicester. If you need a motor vehicle service, MOT or car, van and Lcv repair in the Leicester area for all range of manufacturers’ vehicles, our friendly local technicians are here to help today. DSR Autos Limited are approval by the RAC Garage Network & audited so you can can be sure both you and your car will enjoy a top-notch service giving you total peace of mind every time. **RAC approved garage network works to the RAC customer charter. A code of conduct which has been approved by the Chartered Trading Standards Institute so you can be absolutely confident that you’re in safe hands. We look forward to seeing you with your beloved vehicles MOT and repairs Our Services: Petrol, Diesel, hybrid & EV Testing Timing Belts replaced Air Con Regas/repair Brakes & Clutches Suspension & Steering Car Servicing & Repair Exhaust & Batteries Welding Mot Class 4 & 7 Arrange Used Cars Sales Finance Extended Warranty Payment Assist/ 0% interest free payments. Diagnostics Mercedes, BMW, And Mazda VAG Group Digital Service Available with Genuine Parts ( price available on request ) Repair Centre: Opening Hours: Monday to Saturday 08.30am to 06.00pm Used car sales: Opening Hours: Monday to Saturday 08.30am to 06.00pm and sunday 11.30 am to 04.30pm sunday is by appointment only. We only use quality replacement parts. All our workmanship is guaranteed with 12 months of parts and labour.

17 Layton Road, Off A47 Uppingham Road, Leicester, LE50PU

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.