Car Diagnostics | Book a Car Diagnostic in Bristol

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 Bristol

Our top pick

RAC Mobile Mechanic in Bristol

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 Bristol

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

Monster Gear Garage

4.6/5

We are an independent 5 star garage with high experienced technicians that will take care of your vehicle, we cover a wide range of repairs like: MOT repairs Servicing Air Con Regas Air Con Recharge Brakes Clutches Timing belt / chain replacements Welding Diagnostics Engine repairs / replacement Drive in with no appointment. If you wish to wait while your car is being repaired we have a luxury waiting area with TV, Wi-Fi and free hot drinks. Our garage is a comfortable place for you and your vehicle.

Bridge Road Ind Est, Unit 16 - 18, Bristol, BS154TA

T.D Garage Services

4.5/5

At TD Garage Services Ltd, we take care of all car makes and models. Whether you have a Ford, a Fiat, a Honda or a Hyundai, you can trust us to do a quality job. We are well known as a reliable local garage that provides a range of services including car repairs, servicing as well as MOT testing.

Unit 20, Windmill Farm Business Centre, Bristol, BS34DB

PC Motors.

4.3/5

Established in 1980, our main workshop is located in the Horfield area of Bristol. We have a thirty year heritage of being Volkswagen Audi Group (VAG) specialists. As such we are highly experienced in the repair, parts replacement and servicing of the entire range of VAG makes and models. Our many years of expertise, working on these respected brands, makes us the leading independent specialists for VAG vehicles in the Bristol area. We are a fully certified RAC Approved Garage Network member and can also carry out any warranty work. Our team of trained, qualified, reliable and trustworthy technicians and mechanics have secured solid customer and key stakeholder relationships over our 30 year heritage. Confidence in our service quality, advice integrity and competitive pricing has resulted in a significant number of our customers staying loyal to us for over ten years.

Unit 1, Elm Road, Horfield, Bristol, BS78RJ

IN'n'OUT Autocentres Bristol

4.2/5

At IN’n’OUT Autocentres we offer fixed prices MOTs and Servicing for any make and model of car with no hidden extras. We are proud to be a ‘Which? Trusted Trader’ so we are really a garage you can trust. We also have a 5 Star Trustpilot reviews rating. We provide OEM parts and 12 months warranty on all parts and servicing. We only use premium Castrol oils in all servicing. Our services are all completed ‘while-u-wait’ so you have never have the inconvenience of losing your car for the day. You can watch your car as it is being worked on through the viewing window or sit back and relax in our clean and comfortable customer lounges with FREE Wi-Fi and coffee and read the latest magazines. Check out our latest reviews and BOOK NOW!!

In-N-Out Autocentres, Cribbs Causeway, Bristol, BS10 7UD

Bond Motor Services

4.2/5

Welcome to Bond Motor Services, a modern-thinking Motor Dealership and Repair Centre with a focus on traditional values and Service. We offer competitive Vehicle Servicing, Mechanical Repairs, Tyre Services and MOTs. Bond motor Services undertake the servicing and repair of all makes and models of cars and vans. Established for more than 15 years, proprietor expects nothing but the best from his team of qualified Technicians, and will ensure that both you and your car receive the very best of service. From your first contact you can expect friendly and open discussion about your vehicle and any work required, at an agreed and competitive price- This level of service and communication will continue, keeping you fully informed right up to the point when your vehicle is ready for collection.

50 The High Street, Kingswood, Bristol, BS15 4AJ

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.