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Diagnostic Check in Swansea

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Swansea Diagnostic Checks: Prices, Reviews & Local Insights

Real-time data from live garage profiles on BookMyGarage.com

£65.22
Average diagnostic checks price25th in Wales
4.82
Average customer ratingBased on verified feedback
1,315
Customer reviewsFor garages in Swansea
15,000+
drivers compared prices to book diagnostic checksin Swansea in the last 12 months

What local drivers say about garages in Swansea

AI Generated

Drivers in Swansea speak very highly of their local garages, repeatedly praising friendly, professional staff, fair and transparent pricing, and clear communication, with health check videos, photos and progress updates often mentioned. Quick turnarounds on MOTs and servicing, easy online booking and honest advice without pressure to buy extras are common themes, and many customers say they return year after year or recommend their garage to others. A few reviewers noted occasional hiccups, such as short-notice appointment changes or services taking a little longer than expected, though these were the exception rather than the rule.

17
Verified garages in Swansea2nd in Wales
Top Tier1Top Tiergarage
Gold Tier1Goldgarage
Silver Tier2Silvergarages
4Total Tieredgarages

Top Rated

1Second Chance Clothing limited / ta Neath Servicing 5.0
2Foundry Autos 5.0
3The Fuel Doctor Tyre & Service Centre 5.0

Most Reviewed

1Bassetts Nissan Swansea355 Reviews
2Keep Driving Auto Ltd189 Reviews
3Manselton MOT & Service Centre139 Reviews
22
Garages offering Diagnostic Checks
3
Garages open outside standard hours
10
Garages open on Saturdays
17
Garages offering collection & delivery
21
Garages offering monthly repayments
4
Garages registered with Motorcodes
1
Garage on IMI Professional Register
3
RMI member garages
18
Garages offering 12-month parts & labour warranty

Top Garages for Diagnostic Check in Swansea

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 Swansea.

Don't know your vehicle registration?
Diagnostic Check

22 garages available in your area

AutoSure Swansea Logo
AutoSure Swansea

Physical Garage

60 Bernard Street, Uplands, Swansea, SA2 0HS

Top Tier Garage

Why You Should Choose Us for Your Diagnostic Check in Swansea

Expert Car Repairs & Servicing As a small family ran business, at AutoSure Swansea we specialise in high-quality car repairs, servicing, and maintenance to keep your vehicle running smoothly. Our experienced technicians provide pre MOT check, full MOT, diagnostics, brakes and clutch repairs, engine servicing, and more. Trust AutoSure Swansea for professional automotive care that keeps you safely on the road.

Diagnostic Check£79

Book Now

4.96 (125 reviews)

Reviews Summary

AI Generated

Customers consistently praise this garage's friendly, knowledgeable staff, clear communication, quick turnaround and fair, transparent pricing, with several noting the absence of any hard sell and the ease of online booking. Reviewers also appreciated being kept informed throughout, and many said they would return or had already rebooked. A very small number mentioned that certain jobs, such as a wet belt replacement, fall outside what the garage offers, so checking availability of specialist work beforehand may be worthwhile.

5.0/5.0
Verified
“Hidden gem”
Would recommend
Review left: 01/11/26
5.0/5.0
Verified
“Can’t fault the service revived for my MOT”
Would recommend
Review left: 31/10/26
5.0/5.0
Verified
“Great service will definitely use them again”
Would recommend
Review left: 21/10/26
Manselton MOT & Service Centre Logo

Cambrian Yard David St, Cwmbwrla, Swansea, SA5 8NX

Why You Should Choose Us for Your Diagnostic Check in Swansea

Manselton MOT & Service Centre is located in Cwmbwrla, Swansea. With our professional and knowledgeable staff, we are here to help you get your vehicle back on to the road. We offer MOT's servicing, body work, diagnostics, brakes, exhaust, clutches and more. We are happy to answer your questions and give you solutions at affordable prices.

Diagnostic Check£54

Book Now

4.87 (139 reviews)

Reviews Summary

AI Generated

Customers consistently praise this garage for its friendly, efficient service, with several reviewers highlighting the helpful, cheerful staff and smooth online booking process. Reliability and punctuality also stand out as strong points, with many mentioning they return year after year with confidence in the team's work. No notable weaknesses were raised in these reviews, reflecting a strong overall level of customer satisfaction.

5.0/5.0
Verified
“Fantastic service”
Would recommend
Review left: 04/11/26
5.0/5.0
Verified
“Great service”
Would recommend
Review left: 24/10/26

Reply from Manselton MOT & Service Centre

Thank you for your kind review darren. Hope to see you again in the future.

5.0/5.0
Verified
“Great service”
Would recommend
Review left: 14/10/26
Keep Driving Auto Ltd Logo
Keep Driving Auto Ltd

Physical Garage

Keep Driving Auto Ltd, Unit 7 St Lukes Court, Swansea, SA1 7ER

Why You Should Choose Us for Your Diagnostic Check in Swansea

Here at Keep Driving Auto we provide a first rate, friendly garage service. RAC Approved, Serving the Swansea area, located in Llansamlet within easy reach of both the city Centre and Swansea Enterprise Park.

Diagnostic Check£45

Book Now

4.87 (189 reviews)

Reviews Summary

AI Generated

Customers consistently praise this garage for its friendly, professional staff, fair and transparent pricing, and efficient service, with MOTs and air con work often completed quickly and to a high standard, alongside a comfortable waiting area with refreshments. A small number of reviewers experienced issues, including one instance where a booking confirmation didn't materialise and another where a repair fault wasn't identified straight away, so communication around follow-ups and quality checks could be strengthened further. On the whole, though, the overwhelming majority describe a trustworthy, welcoming garage they'd happily return to and recommend.

5.0/5.0
Verified
“Great service. Will definitely use their services again”
Would recommend
Review left: 19/10/26
5.0/5.0
Verified
“Excellent”
Would recommend
Review left: 08/10/26
4.8/5.0
Verified
“Great service”
Would recommend
Review left: 07/09/26
Bassetts Nissan Swansea Logo

Neath Road, Morriston, Swansea, SA6 8HF

Why You Should Choose Us for Your Diagnostic Check in Swansea

Bassetts, Nissan car servicing, MOTs and repairs in Swansea. Manufacturer knowledge you can trust. From vehicle diagnostics and health checks to air con servicing and general repairs, you have peace of mind that you have the best technicians and genuine parts. Bassetts prides itself on its reputation as a franchise dealership which always carries out work to the highest standard. Book your Nissan service, repair and/or MOT today and get the best in customer service and quality of work. Book a service and MOT at the same time for even more savings. There is no payment to be made on BookMyGarage, you will simply pay after the work is done. The

Diagnostic Check£60

Book Now

4.68 (355 reviews)

Reviews Summary

AI Generated

Customers overwhelmingly praise this garage for friendly, professional staff, clear and timely communication, and competitive pricing, with several reviewers valuing the health check video and progress updates. Many also describe the process as quick, convenient and good value compared with main dealers. A small number of reviewers mentioned slow turnaround on a simple job or confusion over what was included in a booking, so clearer expectations around timings and extras may benefit those customers.

5.0/5.0
Verified
“Great service”
Would recommend
Review left: 01/11/26
5.0/5.0
Verified
“Xtrail full service”
Would recommend
Review left: 28/10/26
5.0/5.0
Verified
“Great service will definitely use again”
Would recommend
Review left: 23/10/26
GORS GARAGE SERVICES LIMITED Logo

Swansea Rd, Swansea, SA4 4AS

Gold Tier Garage

Why You Should Choose Us for Your Diagnostic Check in Swansea

⭐️Highly recommended by returning customers ⭐️Honest advise matched with reasonable prices ⭐️IGA Awarded ⭐️Main dealer trained Your trusted local specialists, delivering a premium dealer level service at a more competitive cost. Customer satisfaction is at the heart of everything we do. Don't hesitate book your appointment today OPENING HOURS: MONDAY - FRIDAY 8AM - 5:00PM

Diagnostic Check£90

Book Now

4.9 (58 reviews)

Reviews Summary

AI Generated

Customers consistently praise this garage for friendly, honest staff, fair pricing and clear communication, with many saying they would not go anywhere else and highlighting the easy online booking and quick turnaround. Reviewers also appreciate the helpful advice, good aftercare and convenient extras such as pick-up and drop-off. The only minor point is that one reviewer felt the charges were middle of the road, which could be worth keeping an eye on, though it was not echoed elsewhere.

5.0/5.0
Verified
“Great service”
Would recommend
Review left: 25/10/26
5.0/5.0
Verified
“Great service”
Would recommend
Review left: 24/10/26
5.0/5.0
Verified
“Great experience”
Would recommend
Review left: 28/08/26
Neath Servicing Logo
Neath Servicing

Physical Garage

Unit 1 Quarry, Bryn Llewelyn, Alltwen, Pontardawe, Swansea, SA8 3BR

Why You Should Choose Us for Your Diagnostic Check in Swansea

At Neath Serving, we’re proud to be the go-to independent garage for motorists across Neath and the surrounding areas. With years of experience and a passion for keeping vehicles in top condition, our friendly, fully qualified team delivers honest, high-quality car servicing, MOT testing, repairs, and diagnostics for all makes and models – from everyday family cars to performance vehicles. We specialise in: Full and interim servicing to manufacturer standards Class 4 & 7 MOT testing (with while-you-wait options where possible) Brake repairs & replacements Exhausts, clutches, tyres, and suspension work Engine diagnostics using the late

Diagnostic Check£45

Book Now

5 (41 reviews)

5.0/5.0
Verified
“Great service”
Would recommend
Review left: 12/10/26
5.0/5.0
Customer Review
“Amazing service”
Would recommend
Review left: 05/10/26
5.0/5.0
Customer Review
“Excellent Service”
Would recommend
Review left: 22/09/26
C&G Auto Repairs Logo
C&G Auto Repairs

Physical Garage

Unit F1, SA1 Business Park, Langdon Road, Port Tennant, Swansea, SA1 8DB

Why You Should Choose Us for Your Diagnostic Check

Welcome to C&G Auto Repairs, thank you for considering us. friendly and reliable team who work hard to maintain our reputation as one of Swansea's most trustworthy vehicle repair companies. For many years we have been helping the people of Swansea with their vehicle repair needs and during this time we have developed an unrivalled reputation for our honest, hard-working work ethic. We specialise in a wide range of vehicle repair services, including brakes, servicing, vehicle diagnostics, wheel alignment / tracking, tyres and much more.

Diagnostic Check£60

Book Now

5 (9 reviews)

Reviews Summary

AI Generated

Customers consistently describe a smooth, efficient experience, from easy online booking and phone confirmation through to quick turnaround on MOTs and full services. The garage is praised as honest and reliable, with one reviewer noting they weren't pushed into any unnecessary extras. With a perfect 5 out of 5 average, no weaknesses were raised in the recent reviews.

5.0/5.0
Verified
“Happy client”
Would recommend
Review left: 19/09/26

Reply from C&G Auto Repairs

thanks for the review happy we could help

5.0/5.0
Verified
“Great service”
Would recommend
Review left: 13/07/26
5.0/5.0
Verified
“Great all round”
Would recommend
Review left: 19/09/25
Fast Fix Mot and Service Logo

PBM House, Kingsway, Fforestfach, Swansea, SA5 4ES

Why You Should Choose Us for Your Diagnostic Check in Swansea

At Fast Fix MOT & Service, we know how important it is to have a garage you can rely on. With over 40 years of combined motor trade experience, we're here to make looking after your car as straightforward as possible, with honest advice, transparent pricing and no unnecessary repairs. Whether you need an MOT, service, tyres, brakes or repairs, we'll always explain what's needed, keep you informed, and treat your vehicle as if it were our own. Our goal is simple, quality workmanship, friendly service, and getting you back on the road quickly and safely. As a proud local Swansea business, we're committed to delivering a service that's Fast. R

Diagnostic Check£60

Book Now

5 (8 reviews)

5.0/5.0
Verified
“Good sevice”
Would recommend
Review left: 07/10/26
5.0/5.0
Customer Review
“Good mechanics”
Would recommend
Review left: 24/09/26
5.0/5.0
Customer Review
“Fantastic service”
Would recommend
Review left: 29/08/26
The Fuel Doctor Tyre & Service Centre Logo

Unit 10, Alamein Rd, Morfa Industrial Estate, SA1 2HY

Why You Should Choose Us for Your Diagnostic Check

Welcome to The Fuel Doctor Tyre & Service Centre Based in Swansea, The Fuel Doctor Tyre & Service Centre is a trusted family-run garage dedicated to keeping you safely on the road. With a reputation built on honesty, reliability, and outstanding customer service, we pride ourselves on delivering high-quality vehicle maintenance and repairs at competitive prices. We offer a comprehensive range of automotive services, including MOTs arranged, MOT repairs, vehicle servicing, diagnostics, brakes, discs and pads replacement, tyres, exhausts, batteries, suspension work, and all fast-fit repairs. Whether you need routine maintenance or urgent repa

Diagnostic Check£60

Book Now

5 (13 reviews)

5.0/5.0
Verified
“Great experience”
Would recommend
Review left: 02/11/26
5.0/5.0
Verified
“Great Service”
Would recommend
Review left: 21/10/26
5.0/5.0
Customer Review
“Fab ,quick service highly recommend!”
Would recommend
Review left: 15/10/26
C.J Motors Logo
C.J Motors

Physical Garage

999 Gorseinon Road, Penllergaer, Swansea, SA4 9GE

Why You Should Choose Us for Your Diagnostic Check in Swansea

With extensive experience in the motor trade, C.J Motors has built a strong reputation for reliability, honesty and quality workmanship. We proudly serve our local community, providing affordable vehicle servicing, MOTs and repairs without compromising on quality. Our qualified team is dedicated to keeping your vehicle safe, reliable and running smoothly. We offer a wide range of services, including: - Vehicle servicing and MOTs - Clutch replacements and repairs - Timing belts and timing chain replacements - Exhaust repairs and replacements - Welding and fabrication - Brake inspections, repairs and replacements - Vehicle diagnostics and fa

Diagnostic Check£79

Book Now

5 (1 reviews)

5.0/5.0
Customer Review
“Amazing service”
Would recommend
Review left: 20/10/26

Reply from C.J Motors

Thank you for your feedback and support

Looking for Diagnostic Checks near Swansea?

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See How Much Diagnostic Checks Cost Near You

Live price ranges across towns near Swansea

TownDiagnostic Check
Swansea£42–£70
Cardiff£40–£90

What does a car diagnostic check do?

A diagnostic check is carried out on your vehicle by a mechanic, who will plug your vehicle into a specialised code reader. It can detect problems with your vehicle which may be difficult to spot manually.

The main components which are tested in a diagnostic check are the car’s:

  • electronic control units (ECUs) - these control various element of the car and its performance including engine running
  • emissions and exhaust sensors
  • braking system
  • electrical components such as central door locking
  • transmission if electronically controlled
  • ignition coils
  • throttle setting
  • fuel injectors
  • air flow and coolant

 

Why is a car diagnostic check important?

A diagnostic check is very important as it can detect a potential problem with your car, even before a breakdown. The computerised equipment scans your vehicle’s system to check for any faults, no matter how minor or major. A diagnostic test is a quick, easy and accurate way to discover any faults and will give you the chance to get them fixed before they turn into bigger and more expensive issues. When your car has a fault, this may show as a warning light on the dashboard. If the light goes out the system will store the fault code so the garage will find this when they do the diagnostic check.

What are the possible signs that your car needs a diagnostic check?

There are many different signs which will indicate that your vehicle needs a diagnostic check. Essentially, 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. Here are some of the key signs:

  • 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 problem. 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 work brake discs or pads. However, it could also indicate a problem with your suspension or steering.

 

How long do car diagnostics take?

You can expect a diagnostic check on your car to take approximately 90 minutes. You may want to allow for more time though as the mechanic who will be carrying out the check might not be available to start right away.

How much does a car diagnostic check cost?

The price of a car diagnostic test can vary, depending on the garage that you visit. Each garage has a fixed price for diagnostic checks, ranging from £30 - £100.

Enter your vehicle registration number and post code into BookMyGarage (at the top of this page) and you can instantly compare diagnostic check pricing from all of the garages in Swansea. As well as price, you can see the garages’ reviews, distance from your post code, extra services offered and availability. You don’t even have to register to get access to all of this information. When you have selected a suitable garage, you can choose a date, any optional extras (such as collection and delivery, loan car etc.) and book online.

How to be a better driver

Whether you’re driving in Swansea or further afield, think about road user etiquette. Showing respect for other road users makes driving more pleasant for you and safer for everyone. For example, if you have to make a last minute change of lane, make your request to change clear to the driver who will need to let you in - and signal your thanks if they do. Be ready to abandon the change of lane if they won’t play ball - your safety (and that of other drivers and pedestrians) is more important than getting to your destination in the shortest time possible. When the position is reversed and a driver asks your permission to change lanes, allow them to as long as it is safe. If you get frustrated, avoid using your horn - it won’t improve matters and might make them considerably worse.

Our Spotlight Garage in Swansea AutoSure Swansea

Top Tier Tier
★ 5.0
out of 5
125
verified reviews
£79.00
from

“Highly recommend this garage. I recently used them for an MOT and service and was thoroughly impressed by their promptness and professionalism. The staff were friendly and kept me well-informed throughout the day. Crucially, they inspected some additional future work I requested, provided a clear and transparent quote, and explained the next steps without any hard sell. I have already booked my vehicle back in to have the work completed."”

– Fran, BMG-Verified review

Why AutoSure Swansea Stands Out

✓ Top Tier tier status✓ Waiting area available✓ Loan car available✓ Collection & delivery

Opening Hours

Mon–Fri08:30 – 17:30Sat09:30 – 14:00SunClosed

*All information accurate as of November 6th 2026