Car Diagnostics | Book a Car Diagnostic for your Porsche

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 Porsche models such as Macan, Cayenne, 911, Taycan, and Panamera. This service is completed at your home or workplace, following Porsche 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 Porsche

We’ll come to you at home or work

RAC Mobile Mechanic for your Porsche

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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 Porsche

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

North East Auto Services - Middlesbrough.

4.8/5

Welcome to North East Auto Services Group, in Middlesbrough, Peterlee and Fairfield, Stockton. We offer a wide range of garage services including MOT Testing, Servicing, Tyres, Air Conditioning, Repairs and more.

Ormesby Road, Middlesbrough, North Yorkshire, TS30NB

Auto Dynamics Barnet

4.2/5

Auto Dynamics provides a unique personal service within the automotive industry, If you drive it we can fix it! Where we provide in-house; mechanical, mot, electrical, bodywork including insurance and wheel repairs to your vehicle, TV de-restrictions and unlocking, professional installation. Mobile fitting is available upon request.

Auto Dynamics, R/O 17-19 Greenhill Parade, Barnet, (Behind Weavers Bar), EN51EU

Brooklands Service Centre

4.7/5

Brookland's have been here for 30 years. We are proud in everything we do and carry everything out to a high spec. Brookland's 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 license'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 other hand we also carry out a wide range of body work and repairs too..

162 Armley Road, Leeds, LS122TY

Redburn Mot and Service Centre , Bosch Car Service

4.8/5

WE ARE WHO CAN FIX MY CAR 2018 AWARDS FINALISTS. Looking for great value car servicing? Need a reliable MOT test centre? We are specialists offering a full range of car servicing / repairs and MOT's at great prices. In addition we offer air con re-gas, tyre supply and fitting, tracking and laser alignment and full diagnostics. We pride ourselves on our excellent service and our 5-strong team of trained mechanics will be happy to answer all of your questions regardless of your vehicle make or model. Call us today for a great deal on your next car MOT or car service. Our state of the art facility has everything we need to offer comprehensive care for your vehicle,

Unit 9A/B Cowley Road, Blyth Riverside Industrial Estate, Blyth, NE24 5TF

Automotive Services (Eastern) Ltd

4.4/5

Welcome to Automotive Services, we have many years' experience in all aspects of the motor trade. Our team is highly experienced and fully trained to provide a service which is second to none. Our fully equipped workshops cater for the repair and service of cars, vans and light commercial vehicles, any make or model, any age, without affecting your manufacturer's warranty. We can also mechanically service your classic car, moped and scooter, Quad bike and your power tools. As an independent garage service in Bedford, Bedfordshire we can provide tailored maintenance solutions to match your personal, business and fleet requirements. We strive to offer outstanding workmanship and customer service at unbeatable prices, whether you require a bulb, tyre, car servicing and MOTs or a complete engine, we will go that extra mile. We offer a free collection and delivery service from your home or workplace and free courtesy vehicles upon request to make life easier.

35 Brunel Road, Bedford, MK41 9TJ

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.