Car Diagnostics | Book a Car Diagnostic for your Honda

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 for your Honda

We’ll come to you at home or work

RAC Mobile Mechanic for your Honda

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

For a limited time, get £50 off repairs over £150 when you book a diagnostic test. Offer ends 09/12/25, 09:00.^**
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.

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 for your Honda

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

New Garage (Harnham)

5.0/5

New Garage (Harnham) ltd was established in 1984 and has been providing quality vehicle repairs and servicing in the Salisbury area for over the past 30 years. Our 4 highly trained and experienced mechanics/technicians have over 90 years of combined experience between them working on motor vehicles. We work with all makes and models and specialise in Electric and hybrid vehicles; the technology for these vehicles has been developing greatly over the last 20 years and we have kept up to date with all the technology, tools and training to be able to repair and service electric/hybrid vehicles of all makes and models. We are an RAC Approved garage and we only use high quality parts and all parts and labour we provide come with a standard 12-month warranty for added peace of mind. If you need your car picked up, a lift home or a courtesy car please let us know and we will do all we can to assist you. We look forward to hearing from you.

28-30 Harnham Trading Estate, Salisbury, SP2 8NW

SH Diesel Repair Centre UK LTD

5.0/5

we are a Independent Injector & Turbo Specialist , Common Rail Injector Testing + Reconditioning & New available All Mechanical work undertaken from Services, Brakes, Exhaust, Suspension to Major engine work and Engine Rebuilds. Diagnostics Tyres At SH Diesel We are all professional, highly trained mechanics

66 Arthur Street, Lake Side, Reddich, B988JY

Portside Cars LTD

4.0/5

We are a family run business and it is important to us that your trust us and feel comfortable with us. We pride ourselves on giving the best and honest service that we possibly can with the quickest turnaround time.

Unit 8, Canal Bridge Enterprise Centre, Meadow Lane, Ellesmere Port, CH654EH

Magic Motors

4.7/5

Magic Motors are a car Servicing and repair centres which is open to both the motor trade and general public. If you own a used car dealership, lease company, have a fleet of company cars or you just love your car. Our guys and girls at Magic Motors can assist in preparation of your car to the highest standards. From smart repairs to vehicle mechanical repairs we have it covered. As a family owned business we have strong customer values where all our staff work to high standard. We can even take your car and prepare it for sale and then find it a new loving home. Using trade buyers, vehicle auctions and handling sales from our premises in Poole, you are promised a quick smart solution to the preparation and if needed the disposal of your vehicle. We work with local motor traders, lease companies and auction houses on a daily business in assisting them to get the best prices for their cars and looking the best. Give us a call with your requirements or direct message on our Facebook page https://www.facebook.com/MagicMotorsandMotorsports 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.

Unit 3-4 Virage Business Park, 132-134 Stanley Green Road, Poole, BH153AP

Witney Vehicle Repairs Ltd

4.6/5

Here at Witney Vehicle Repairs we have over 30+ years of experience, pride ourselves on our commitment to give the very best in car repairs, servicing, diagnostics, & customer satisfaction. Our pricing is very competitive with no hidden surprises, We look forward to earning your trust & gaining your custom. And now we are proud to announce we have become an RAC approved garage offering RAC inspections, repairs and other RAC products. Also we are part of the RMI & and trust my garage network, We are now offering a Shell / Forte vehicle service, parts & preventative solutions package please contact us for more information.

Witney Road, Standlake Business Park, Witney, OX297PR

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.