Book a Car Diagnostic in Bangor

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 in Bangor

We’ll come to you at home or work

RAC Mobile Mechanic in Bangor

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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.

Average cost of a vehicle diagnostic by car make^

The RAC charges a flat rate for the cost of a car diagnostic but prices may change due to inflation. According to RAC data, the average cost of a car diagnostic is £87.

Make	Average price
Ford	£105
Vauxhall	£105
Volkswagen	£105
Peugeot	£104
Mercedes-Benz	£104
Nissan	£106
BMW	£107
Audi	£106
Renault	£104
Citroen	£104

^Average price quoted for RAC Mobile Mechanics from 01/01/25 to 31/03/25.

And it’s not just car diagnostics that we do in Bangor

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

Gwalia Recovery LTD

Here at Gwalia we have been a family run business since 1973 offering a range of services which include a Shell Forecourt with a Londis shop that you may find useful should you be here in our waiting room. Our friendly bilingual staff are always on hand to assist in any way they can. We boast a fleet of over 20 recovery vehicles capable of recovering any vehicle found on the UK roads, which operate on a 24 hour basis! Our workshop is fully equipped to service or repair your vehicle, getting you back on the road as quickly as possible is our number one priority! To aid in this Gwalia keep a number of fast moving problematic parts in stock as well as a very wide range of tyres on the shelf (13" up to 22") !!! Gwalia is open for business as normal even on bank holidays !!

Gwalia Garage, Caeathro, Caernarfon, LL55 2SS

Bridge garage LTD

Established for over 50 years, a family run business with a reputation for high quality workmanship at reasonable costs. From minor to major repairs on car, commercial and PSV vehicles. Our garage is fully equipped to take care of all sorts of vehicles faults and issues. To discuss your requirements, speak to a member of our team today. We are your local go-to garage in Ossett and surrounding areas.

Unit 1, Ind Est, Pentraeth, LL758LJ

Wirral Motor Services Ltd

We are a family run garage based on the Wirral. We have been established since 1998. We work on all Makes and Models of vehicles and light goods. we have our very oen MOT bay and Service bays. We carry out Diagnostic work, fault finding and minor electrical work. Other work includes Brakes, Servicing, Clutches, Tyres, Timing Belts, Suspension and Steering. We have an onsite Qualified onsite Air-Con Mechanic for the new and old Gas. We are Located in Moreton on the Tarren Ind Est. All our work in gauranteed parts and labour. RAC Apporved Garage AA Apporved Garage Approved Garages Motor Codes Member GAU Apporved Member AUTOCARE Garage 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.

1 Tarran Way South, Moreton, CH464TP

R.B Automotive

We are a local garage carrying out vehicle servicing and repair. With over 40 years combined experience with all makes and models you can trust your vehicle is in safe hands.

R B Automotive, Chester Road West, Deeside, CH51SA

Durley Garage & MOT Centre Ltd.

Durley Garage and MOT Centre have been catering for all car and light vehicle repair services in the Wirral since 1992 and we have over 38 years of continuous experience in the trade. The team consists of 7 qualified members of staff, please see a brief detail of the staff below. Graham Malam - Director and TechnicianStarted the company up along with his business partner and has been in the trade since 1974. Graham covers the majority of areas in the business he is an accredited motor engineer and a qualified City and Guilds technician. Greg Maxwell - Director and Technician Started the company with Graham in 1992 and covers majority areas in the business. He is an accredited Motor Engineer and qualified City and Guilds technicianIan Malam - Senior TechnicianHas been with the company since 1992 and is qualified City and Guilds technician. Ian is a specialist in Ford vehicles. Chris Halsey - TechnicianHas been with us since school when he joined us as an apprentice and he is now fully qualified technician specialising in Major engine repairs and gearboxes. He has achieved NVQ Level 3 City and Guilds. Office Staff Neil Malam - Service Manager and Diagnostic Specialist Has been with us since 2002 and he controls all aspects of work load, reception queries and accounts. He is a computer diagnostic specialist. All of our technicians are main dealer trained and fully accredited.

3 Prenton Way, North Cheshire Trading Estate, Prenton, CH433DU

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.