Car Diagnostics | Book a Car Diagnostic in Belfast

£45.37

Average price for this repair in Belfast in the last 30 days^

Trustpilot rating for all RAC Mobile Mechanics.

Why choose the RAC for a car diagnostic?

At the RAC, we've got over 125 years' experience helping UK drivers. We have the skills and knowledge to keep your vehicle running.

Plus, with RAC Mobile Mechanics, you can avoid the hassle of taking your vehicle to a garage when you need a repair. We’ll come to you, at your home or work.

Close up of an RAC Mobile Mechanic underneath a car

Our top pick in Belfast

Our top pick

RAC Mobile Mechanic in Belfast

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. 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.

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:

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 in Belfast

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.

Try one of our RAC Approved Garages

View all garages

Springbank Service Station

5.0/5

We are an independent family run business serving the local community for over 35 years.At Springbank Service Station you will find a filling station under the Jet brand incorporating a shop, Jet washes, vacuum and parking.We also specialise in servicing and M O T's to all makes of vehicleAll of our new and existing customers are greeted by friendly and helpful staff.

Ayr Road Irvine, Irvine, KA12 8NF

T & K Motors

4.9/5

T&K Motors have been established for more than 30 years and are a helpful friendly garage, we carry out MOT’s, servicing and mechanical repairs on all makes and models of vehicles. We pride ourselves on offering main dealer quality of work, at independent prices, whilst ensuring that your warranty remains intact by using genuine or manufacturer approved parts, and are usually able to save you over 60% in price comparison. Our mechanics are fully qualified with many years of experience behind them in the motor industry, who take great pride in their work. Our services include the following; • All makes serviced to manufacturer's specification • MOT VOSA class 4 and 7 Car and Light Commercial • Air Conditioning re-charge and leak testing • Batteries/Alternators checked and replaced • Brakes pads and discs, brake fluid changes • Clutch replacement and repair • Cylinder Head repairs • Engine management light diagnostics • Exhausts repaired and replaced • Free vehicle health check • Fuel injection diagnostic/repair • Oil and filter changes • Suspension spring replacement specialists • Timing belts and water pump replacement • Tyres fitted, balanced and aligned • Van servicing and repairs • Free Vehicle diagnostic checks • Welding repairs to MOT standard • Warning lights diagnosed and reset * Car Service, Van Service, Commercial vehicle service

47-53 Green Street, Ayr, KA88BQ

AEC Motors (Mallusk)

4.7/5

We at AEC Motors have been working on Audi and Volkswagen vehicles for over 15 years, however we have over 30 years of experience in the motor trade and have worked on most makes and models by now. We use state of the art Snap-on car diagnostic equipment which can read the fault codes in your ECU’s memory. Our fully trained technicians are then able to produce a report and inform you of any necessary repairs, to get you back on the road quickly and safely. BEST GARAGE Northern Ireland By WCFMC on its annual Awards 4 years running. We are happy to provide a free collection and delivery service for vehicles within 4 miles of our garage depending car is drivable & roadworthy. ( pickup any where in Carrickfergus & Newtownabbey Area Free ) **Note If car needs recovered there will be a recovery fee applicable**

Mallusk Road, Newtownabbey, BT36 4PX

Quinn Motor Services Ltd

4.6/5

We are a family run business specialising in all vehicle and motor services. All our team are fully qualified and have several years of experience in the industry with profession mechanics available for every job. We ensure a first-class service as we understand the troubles people must go through to get their vehicles working again. Quinn Motor Services ensure there are never any worries over the condition of your vehicle and we will have it returned to normal in no time. All our servicing jobs come at excellent prices and our service will be fully comprehensive so that there are no problems when you get back out on the road.

11A Chancellors Rd, Newry, BT358PR

Horner Auto Group - Ayr

4.6/5

Welcome to Horner's. You'll find us at 3/7 Peebles Street, Ayr, KA8 8DP, where our fully trained and helpful staff are on hand to assist you with anything from the straightforward Service, Repairs and MOT's to the not so straightforward such as Emergency Part Failures and Brakedown Assistance. We only use OE Quality parts which ensure best fitment, value for money and longevity which allows us to offer a no quibble warranty for 12 months or 12,000 miles (whichever is sooner). We also offer a host of payment options including Card, Cash, BACS Transfer and Payment Assist which allows you to spread the cost of your bill over 4 months interest free. We hope to see you soon.

3/7 Peebles Street, Ayr, KA88DP

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.