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Compare Car Diagnostic Deals in Cardiff

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Diagnostic Check

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Transparent reviews & ratings

Cardiff Diagnostic Checks: Prices, Reviews & Local Insights

£61.40

Average price for a Diagnostic Checks in Cardiff

4.83

average rating based on customer feedback.

1,685

customer reviews for garages in Cardiff

How to book online

ENTER

ENTER

your vehicle reg & post code.

COMPARE

COMPARE

instant prices for your MOT, service or repairs

BOOK

BOOK

your preferred date & time in 1 step.

NO PAYMENT

NO PAYMENT

taken - only when the work is complete*

*some mobile technicians will contact you prior to your appointment to take payment in advance.

Top Garages for Diagnostic Check in Cardiff

Find the perfect garage for your vehicle with detailed information, reviews, and real-time availability.

Tailor your results by entering your reg and postcode

Then sort by location, availability, ratings, and price to find your ideal garage in Cardiff.

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Team Mercedes cardiff Logo

Team Mercedes cardiff

Physical Garage

Marine Village, Penarth road, Cardiff, CF11 8TU

About Us

Mercedes and german car specialist. All makes and models repaired. Carried out 10 years of employment in mercedes benz cardiff Carried out 5 years of employment in Bmw cardiff Fully trained and certified Servicing Brakes Suspension Diagnostic Ad blue solutions Recovery Battery Lights Vehicle coding Much more

Diagnostic Check£60

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4.78 (9 reviews)

Reviews Summary

AI Generated

Customers repeatedly praise the garage for efficient, professional and friendly service, frequently highlighting Shaz’s knowledge and clear communication. They also value the punctuality, honest advice and significantly lower costs compared with the dealership; there are practically no recurring complaints apart from a single 3‑star review that didn’t specify any substantive issues.

Evans Halshaw Vauxhall Cardiff Logo

Evans Halshaw Vauxhall Cardiff

Physical Garage

Nash House, Sloper Road, Cardiff, CF11 8SE

About Us

Affordable servicing from Evans Halshaw Accompanying our extensive range of offers on new and used vehicles are a wide selection of services that offer a cost-effective way of keeping your vehicle in its best possible condition. Ranging from routine servicing through to essential repairs, our dedicated retailers can accommodate any work your vehicle needs doing. What's more, our technicians are fully qualified and have access to the best diagnostic equipment and workshop tools. In addition to any service you have completed, our technicians will carry out a complimentary Vehicle Health Check. The technician performing the check will then pro

Diagnostic Check£78

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4.46 (23 reviews)

Reviews Summary

AI Generated

Reviews are largely favourable, with many customers praising friendly, professional staff, clear communication, quick turnaround, good workmanship and extras such as courtesy cars and clean returns. Common complaints focus on booking and pick‑up communication, missed routine checks (tyre pressure, warning‑light resets), occasional quality lapses (bonnet left unsecured) and unexpected or high labour charges. The tone remains positive, but recurring issues around price transparency and service consistency suggest the garage should clarify quotes and tighten its quality checks.

Evans Halshaw Citroen/DS/Vauxhall Cardiff Logo

Evans Halshaw Citroen/DS/Vauxhall Cardiff

Physical Garage

Nash House Sloper Road, Cardiff, Glamorgan, CF11 8SE

About Us

"Servicing and regular maintenance is a key aspect of vehicle ownership. Regardless of the service you choose, they will always be completed by a fully qualified technician using either genuine or approved parts. With state-of-the-art workshops and skilled technicians accommodating all of your vehicle's servicing needs, there's no better place to book a service than through your nearest Evans Halshaw dealership."

Diagnostic Check£78

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4.17 (15 reviews)

Reborn 4x4 Ltd Logo

Reborn 4x4 Ltd

Physical Garage

Unit 2 Lamby Industrial Park, Wentloog Ave, Rumney, Cardiff, CF3 2EX

About Us

At Reborn 4×4, our commitment to excellence in automotive care runs deep. We offer a comprehensive suite of services tailored to keep your vehicle performing at its peak. From routine maintenance tasks like oil changes and tire rotations to more intricate repairs, our skilled technicians have the expertise and cutting-edge tools to handle it all. Trust us to keep your vehicle running smoothly and reliably, no matter the challenge.

Diagnostic Check£60

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Why Use BookMyGarage For Your Car Diagnostic Check in Cardiff?

We have helped over 22.9 million drivers compare and save on their MOT, servicing and repair costs at local garages. In fact, when you compare garages through our online comparison site, you can save up to 70% when you choose one of the lower-cost options!

As the UK’s leading MOT and service comparison site, we’re dedicated to helping drivers save money on their car maintenance. Here are just some of the ways we keep you in control of your diagnostic check in Cardiff:

 

No Upfront Payment. You never enter any payment details when you book your diagnostic check in Cardiff. We never charge you any fees to use our site and you always pay the garage directly after the appointment.

Easy 3-Step Booking Process. There’s no upfront registration and no faff. You just provide your vehicle’s details, choose the best deal and provide a suitable date and time for your car service. That gives you more time to do the things you care about.

Filter Garages Your Way. Whether you want to book the cheapest diagnostic check in Cardiff or care more about the garage’s reviews, we’ve got you covered. You can filter your search results by price, reviews & ratings, distance, availability and additional services to find the best deal for your needs.

Honest Reviews & Ratings. See what like-minded drivers have to say about every garage on our comparison site to help inform your decision. Always unfiltered and unedited for transparency.

 

Compare deals and save up to 70% on your car maintenance when you choose one of the lower-cost options through BookMyGarage. Enter your vehicle reg and postcode to compare instant prices on car diagnostic checks and book the best deal today.

 

How to Book Car Diagnostics in Cardiff

  1. Enter your vehicle reg and postcode.
  2. Compare deals. You can sort garages in Cardiff by whatever best suits your needs: price, distance, reviews and ratings or availability.
  3. Pick a date and time for your appointment.

 

After you book your diagnostic check, we send you a confirmation email with a summary of your booking. We also inform the garage and they may also be in touch to confirm the appointment or to ask for extra details.

You never pay for your booking until after all the work has been completed and deal with the garage directly after the initial booking process. You also have the ability to change or cancel your booking for free until the day of your appointment.

 

Book online today!

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Mobile Car Diagnostics Near You

A mobile mechanic comes to you, rather than the other way around. This means you can easily fit a service or repair into your schedule, so you don't have to put your day on hold. What could be more convenient than getting your car serviced from your driveway? For a flexible, transparent service with a personal touch, you can trust a mobile mechanic to make your life easier.

 

How Much Does a Diagnostic Check Cost?

The price of a car diagnostic test can vary, depending on the garage that you visit. Each garage offers its car diagnostics for a fixed price, ranging from £30 - £100. Enter your vehicle registration number and postcode into BookMyGarage to instantly compare prices on diagnostic checks from garages near you. This will help you book the best deal on your appointment.

 

FAQs

Frequently asked questions

When Do You Need to Book a Car Diagnostics Appointment?

There are many different signs which will indicate that your vehicle needs a diagnostic check. If you suspect that there is an issue with your car but don’t know what, you will probably want to book a diagnostic check to find out what the problem is.

Some of the problems a diagnostic check can solve include:
• Engine warning light - if the engine warning light appears on your dashboard, it’s important to take your vehicle to a garage as soon as possible as there is a wide variety of problems which the light may be flagging up.
• Strange noises – any strange noises coming from your car need to be checked out before they turn into more serious problems. Some of these sounds may include; whining from the bonnet, abnormally loud exhaust, uneven engine noise, brake squealing or gear crunching.
• Smoke - if you see smoke or steam coming from under the bonnet, your vehicle may be overheating.
• Vibrating - if you notice any vibrating or pulling under your brake, the issue may be due to worn brake discs or pads. However, it could also indicate a problem with your suspension or steering.

What Does a Diagnostic Check Include?

A diagnostic check can detect problems with your vehicle which may be difficult to spot manually. It includes a full health check of your car's engine and electrical systems. A technician will plug your vehicle into a specialised code reader and scan the ECU (Engine Control Unit) for fault codes. They will then interpret these fault codes and find the exact cause of your issue.

When you book an appointment, you get:
• A full report of your vehicle's health
• State-of-the-art diagnostic tools
• Knowledge and advice from an expert mechanic
• Print-out results to show any issues or areas of concern

The test itself will let you know if you have any issues in the following areas:
• Engine Management
• Transmission
• Ignition Coils
• Throttle
• Exhaust
• Brakes
• Oil Tank
• And other major components

How Long Do Car Diagnostics Take?

Car diagnostics take around 90 minutes to complete. Depending on the cause of your problem, the repair time may take longer. A technician will contact you once they have an accurate idea of the problem to provide a repair quote.

Why Is a Car Diagnostic Check Important?

A diagnostic check can detect a potential problem with your car, even before a breakdown. It is also a quick, easy and accurate way to understand any issue with your car. This can include a dashboard warning light or strange noise.

Identifying the problem early will give you the chance to get it fixed before it can become a more expensive repair.