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Compare Car Diagnostic Deals in Cardiff

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Cardiff Diagnostic Checks: Prices, Reviews & Local Insights

£63.68

Average price for a Diagnostic Checks in Cardiff

4.85

average rating based on customer feedback.

1,842

customer reviews for garages in Cardiff

How to book online

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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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1st Stop MOT Cardiff Logo

1st Stop MOT Cardiff

Physical Garage

Unit 19 Rear, Wholesale Fruit Centre, Bessemer Rd, Cardiff, CF11 8BE

About Us

If your car isn't behaving then turn to our trusted team at 1st Stop MOT Cardiff Ltd for all kinds of repair, servicing and MOT work. We cater to all car makes and models and have a wealth of experience in the trade. We will beat any quote! Contact us today to discuss your requirements. We accept payment via Cash, Debit/ Credit Card and BACS. We serve customers across Grangetown, Leckwith, Barry, Penarth & Dinas Powys. We are local experts, here to help you get your car back on the road!

Diagnostic Check£55

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4.85 (126 reviews)

Reviews Summary

AI Generated

Most reviewers praise the garage for fast, friendly and professional MOTs and repairs, frequently noting same‑day or next‑day availability and clear, proactive communication. Regularly mentioned strengths include helpful staff (many name Mark), efficient turnaround, fair pricing and honest advice, with customers appreciating updates by text/WhatsApp and small extras like refreshments. Criticisms are uncommon but include occasional missing paperwork/service‑book stamps, a few follow‑up issues (for example squealing brakes), and minor problems finding the location or inconsistent opening‑time information.

ONE STOP AUTO'S Logo

ONE STOP AUTO'S

Physical Garage

167 Sloper Road, Cardiff, CF11 8AB

About Us

•MOT•SERVICING• •BRAKES•TYRES •DIAGNSOTICS •DPF SOLOUTIONS •AD BLUE SOLOUTIONS Email 📩 or Call us📞 to Book Today! •We Specialise In Honesty•

Diagnostic Check£45

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4.84 (189 reviews)

Reviews Summary

AI Generated

Customers overwhelmingly praise the garage—many five‑star reviews highlight friendly, knowledgeable staff, clear communication, quick turnaround and convenient collection/delivery, often at very competitive prices. A minority report issues with phone/booking communication, occasional long waits, isolated complaints about rushed diagnostics or perceived overcharging, and a few instances of rude front‑of‑house behaviour.

Cardiff MOT & Service Centre Logo

Cardiff MOT & Service Centre

Physical Garage

UNIT 13A, IPSWICH ROAD, CARDIFF, CF23 9AQ

About Us

At Cardiff MOT Centre our friendly and caring team are on hand to help guide you through any car queries that you may have. A family run garage, Cardiff MOT has over 40 years experience repairing and maintaining our customer’s vehicles in their time of need. We provide MOT testing, servicing and vehicle repairs at affordable prices for our customers.

Diagnostic Check£60

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4.84 (421 reviews)

Reviews Summary

AI Generated

Customers rave about Cardiff MOT & Service Centre — reviews are overwhelmingly positive, with many long‑term and repeat clients praising its reliability and value. Frequent highlights are friendly, professional staff, quick turnaround times, easy online booking with prompt text updates, and clear, reasonable pricing. A few isolated issues appear (an unfriendly receptionist, occasional phone/confirmation problems, limited explanations of advisories, one reported repair fault and a misleading payment‑assist listing), but these are rare compared with the widespread praise.

Capital MOT and Service Centre Logo

Capital MOT and Service Centre

Physical Garage

Unit 12,, Clydesmuir Industrial Estate, Clydesmuir Road, Cardiff, CF24 2QS

About Us

Capital MOT & Service Centre are a local, highly reliable garage offering MOT tests, services and a complete range of car maintenance repairs. All makes and models of cars, vans, MPV’s and large goods vehicles are catered for. All quotations are free of charge for any repairs that your car requires to ensure it meets the necessary safety regulations.

Diagnostic Check£60

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4.77 (179 reviews)

Reviews Summary

AI Generated

Customers are overwhelmingly positive, repeatedly praising quick, efficient work, friendly and helpful staff, reliable collection/drop‑off, clear communication and generally good value. A minority reported problems — including a few alleged misdiagnoses or suspicious quotes, occasional missed job details (dirty mats, no fluid top‑ups), a late return and one payment‑terminal issue — so while service is usually excellent, quality can be inconsistent for some customers.

Lansdowne Road Garage Logo

Lansdowne Road Garage

Physical Garage

Lansdowne Road, Cardiff, CF5 1JU

Gold Tier Garage

About Us

Friendly Family-Run Independent garage in Cardiff, We pride ourselves on the high-end services we provide at super reasonable prices. We try and break the mould for expensive repairs and servicing. We believe to charge you accordingly, whilst continuing super high standards of work. From MOT's, Servicing, Brakes, Clutches and much much more, we rarely get beaten on cost. We really look forward to hearing from you.

Diagnostic Check£40

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4.5 (243 reviews)

Reviews Summary

AI Generated

Customers consistently praise the garage for speedy, friendly service, helpful staff and competitive pricing, with many noting same‑day MOTs, quick turnarounds and straightforward online booking. Recurring complaints focus on inconsistent communication — missed calls, late notifications, occasional no‑shows or long waits — plus a handful of reports about unexpected extra charges and missing paperwork (invoices/service sheets). On balance, most view it as reliable and good value, though tightening up booking and billing communication would address the main weaknesses.

Dinapoli Motor Services Logo

Dinapoli Motor Services

Physical Garage

16F Whittle Road, Cardiff, CF11 8AT

About Us

Welcome to Dinapoli Motor Services. We are a Family run garage with almost 20 years trade experience across multiple makes and models. After being mobile for 2 years we took the step to open a static workshop. Benefit from our introductory pricing. We offer a comprehensive range of services for your vehicle all over seen by our master technician. Whether its a service and mot, clutch, timing belt or a more complex diagnostic fault, we can help. Open and transparent is how we run our business - no surprise bills. We offer a 12 month parts and labour warranty for your peace of mind.

Diagnostic Check£60

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5 (55 reviews)

Reviews Summary

AI Generated

Customers praise the family-run garage for friendly, professional service, clear communication and quick turnaround, often singling out Nathan for his expertise and honest advice. Competitive, fair pricing and good value — especially for MOTs, air‑con regas and routine repairs — plus same‑day fits and flexibility for busy schedules are frequently mentioned. Few (if any) recurring negatives appear, so consistency, reliability and transparent pricing stand out as the garage’s main strengths.

BRECON MOTORS CARDIFF Logo

BRECON MOTORS CARDIFF

Physical Garage

43A BRECON STREET, CARDIFF, CF5 1RE

About Us

Your Trusted Garage in Cardiff. Our customer promise. We believe great communication is the key to a great customer service. We guarantee we WILL contact you within 4 hours of your booking to confirm your slot and We WILL keep you informed every step of the way. We take pride in being a family-run garage in Cardiff with over 10 years of experience in the motor industry. Whether you need a quick MOT, regular car servicing, or a major car repair, our skilled team is here to keep your vehicle running smoothly and safely. Get in touch with us today to discuss your needs, or book online now. Comprehensive Car Services in Cardiff We special

Diagnostic Check£50

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4.88 (71 reviews)

Reviews Summary

AI Generated

Customers are overwhelmingly positive, repeatedly praising friendly, honest staff (frequently naming Lee, Olly and Terry), swift turnaround and clear communication during MOTs and services. Reviewers also emphasise fair prices, good value, transparent estimates with no hidden charges, helpful extras like collection/delivery and photos of work, and a reluctance to push unnecessary repairs. A few isolated negatives appear — most notably one serious complaint about an omitted oil change — plus occasional minor gripes about payment options (no card machine) and a possibly out-of-date phone number, but these are rare amid the many five‑star endorsements.

Grease Monkeys Cardiff Logo

Grease Monkeys Cardiff

Physical Garage

Penlline St, Cardiff, CF24 3BD

Gold Tier Garage

About Us

Bring your car to Grease Monkeys and you can be confident we'll sort it out for you. We have built up a good reputation with our customers by being transparent with our findings and pricing. We are all about good customer service and high quality work at a reasonable price. All parts and labour are guaranteed for one year. And we only employ qualified mechanics to work at Grease Monkeys.

Diagnostic Check£60

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4.77 (64 reviews)

Reviews Summary

AI Generated

Customers overwhelmingly praise the garage for friendly, communicative staff (Ella is frequently named), fast turnarounds, competitive pricing and convenient online booking with pick‑up/drop‑off options. A small number of outliers complain about high or unexplained charges, occasional lapses in paperwork or photos and one instance of rude behaviour, but these are rare compared with the steady stream of positive, repeat custom.

Evans Halshaw Ford Cardiff Logo

Evans Halshaw Ford Cardiff

Physical Garage

505 Newport Road, Cardiff, CF23 9UE

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£130

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4.74 (60 reviews)

Reviews Summary

AI Generated

Customers are overwhelmingly positive, frequently praising friendly, helpful staff, clear communication (often via video walkthroughs and detailed vehicle health reports), swift turnaround, convenient collection/delivery and very competitive pricing. A recurring drawback is aggressive or questionable repair recommendations and occasional issues with signage, booking mix‑ups, slow pick‑up times or inconsistent attention to detail; a few customers also noted non‑OEM parts being used without clear explanation. Overall the garage earns strong marks for service and value, but it’s sensible to seek a second opinion on any costly work.

NEW INN MOTORS Logo

NEW INN MOTORS

Physical Garage

2 HAMPTON ROAD, BIRCHGROVE, CARDIFF, CF14 4AH

About Us

New Inn Motors is a repair and service garage based in Cardiff, South Wales. The company was established 30 years ago in birchgrove, Cardiff. Mr M Exintaris took over New Inn Motors due to the success achieved in 5 years at MEG Motors and have relocated our repair service to 2 Hampton Road, Birchgrove, Cardiff. S. Wales.

Diagnostic Check£60

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5 (2 reviews)

Why Use BookMyGarage For Your Car Diagnostic Check in Cardiff?

We have helped over 24.1 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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Diagnostic Check

 

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.

Noticed an illuminated warning light on the dashboard? Book a diagnostic check today.

 

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.