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Diagnostic Check in Slough

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Diagnostic Check

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Slough Diagnostic Checks: Prices, Reviews & Local Insights

£74.42

Average price for a Diagnostic Checks in Slough

4.69

average rating based on customer feedback.

2,171

customer reviews for garages in Slough

How to book online

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NO PAYMENT

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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 UK Garages for Your Diagnostic Check

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 Slough.

Don't know your vehicle registration?
Diagnostic Check
Advanced Auto Technik Slough Logo

Unit 7, Chancery Gate Business Centre, St Mary's Road, Langley, Slough, SL3 7FL

Gold Tier Garage

About Us

Advanced Auto Technik is a family run business which was established in 1984 and went full time in 2004. With nearly 30 years of main dealer experience, you can be confident that your vehicle is being repaired correctly and efficiently. We have invested heavily in diagnostic equipment and specialist tools which are approved and used by Main Dealers. This is extremely essential in order to carry out the job properly and to maintain vehicles to manufacturers’ specifications.

Diagnostic Check£100

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4.78 (840 reviews)

C&G Autos Slough Logo
C&G Autos Slough

Physical Garage

78-80 Church St, Chalvey, Slough, SL1 2PE

About Us

Have your car serviced and repaired by Slough's most trusted garage. Our aim is to provide you with excellent customer service and expert repairs, so you can be conifdent that you, and your car, are safe on the road. We provide you with video updates so your always kept in the know about your vehicle. You can also spread the cost of your service or repair over 4 months interest free, with an over 90% acceptance rate. *For invoices over £350. Subject to terms and conditions.

Diagnostic Check£78

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5 (250 reviews)

Reviews Summary

AI Generated

Customers consistently praise C&G Autos for their honest, trustworthy approach and friendly, professional service, with many highlighting transparent communication, fair pricing, and the team's willingness to advise against unnecessary work. The garage earns particular appreciation for accommodating last-minute bookings, providing regular updates (including via WhatsApp and video), and offering convenient extras such as collection and delivery, complimentary refreshments, and a welcoming atmosphere. Long-standing loyalty is a recurring theme, with numerous families using the garage for many years and reviewers frequently noting they wouldn't go anywhere else for MOTs, servicing, and repairs.

Dropless Logo
Dropless

Mobile Mechanic

268 Bath Road, Slough, London, SL1 4DX

About Us

Say Goodbye to Hassle, Say Hello to Dropless. At Dropless, we are revolutionizing the way you experience car servicing and repairs. Our mission. To put trust back into your relationship with your mechanic. Here's how. Upfront Pricing. No surprises, no hidden costs, just honest, transparent pricing from the start. Crystal Clear Communication. We keep you informed every step of the way, before, during, and after the service. Mechanics Who Care. Our expert mobile mechanics genuinely love helping customers and are committed to delivering exceptional service. With years of experience under our belt, our skilled and friendly team is equipped t

Diagnostic Check£60

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4.68 (463 reviews)

Reviews Summary

AI Generated

The vast majority of customers are genuinely delighted with this mobile servicing company, consistently praising the convenience of at-home servicing, the friendliness and professionalism of the mechanics, competitive pricing, and clear communication on the day including pre-arrival calls or texts. A small number of reviewers raised concerns about post-service documentation not being sent automatically, and the service report process may benefit from a more proactive approach so customers receive paperwork without needing to chase. A handful of reviewers also noted occasional scheduling issues or queries about the thoroughness of major service checks, suggesting that clearer upfront descriptions of what each service level includes could help set expectations more accurately.

Johnsons Honda Slough Logo
Johnsons Honda Slough

Physical Garage

748-749 Dover Road, Slough, SL1 4RF

About Us

Johnsons Honda is committed to great service. Your local Johnsons Honda garage in Milton Keynes, Oxford or Slough is well equipped and can carry a range of maintenance including regular services, diagnostics and repairs.

Diagnostic Check£150

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4.51 (110 reviews)

Reviews Summary

AI Generated

Customers are largely positive about this garage, praising the courteous, friendly staff and the reassuring practice of checking in before carrying out any additional work. The service quality is well regarded, though one reviewer found the overall turnaround time longer than expected, and the garage may benefit from keeping customers better informed about wait times.

MasterTech AutoCare - Bosch Car Service Logo

Unit 1 White Hart Rd, Slough, SL1 2SF

Gold Tier Garage

About Us

Masters Autocare Centre is the most trusted local mechanic garage in Slough with glowing reviews and a strong local reputation. We’re dedicated to providing high-quality car repairs services for all of our customers, offering a team of skilled mechanics with decades of experience who are equipped with the latest state-of-the-art equipment. As one of the best mechanics in Slough, we’re confident that we can help you keep your vehicle running smoothly and safely on the road at affordable prices. From routine maintenance to complex repairs, we offer a comprehensive range of services to help you keep your car in optimal condition. With our all-i

Diagnostic Check£50

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4.56 (88 reviews)

Reviews Summary

AI Generated

The vast majority of customers praise this garage for its friendly, professional staff, competitive pricing, and ability to accommodate last-minute bookings across a wide range of work including MOTs, servicing, tyres, and bodywork. Communication could be more consistent, as a small number of reviewers mentioned not being contacted ahead of appointments or experiencing unclear updates during their visit, and the garage may benefit from reviewing its booking confirmation process. Waiting times were occasionally noted as longer than expected, though many customers found the team willing to stay late or turn work around on the same day to get the job done.

A2Z AutoZone Logo
A2Z AutoZone

Physical Garage

16A, Canada Road Slough, Slough, SL1 1SE

About Us

MOT Testing service for class 4, 5 and 7 We provide a wide range of vehicle diagnostics, repairs and service for you vehicle. We also do Windsor & Maidenhead PHV Compliance test for private hire vehicles. MOT while you wait no appointment necessary, just drop in, alternatively you may book an appointment over the phone.

Diagnostic Check£54

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5 (14 reviews)

P3 Autos Limited Logo
P3 Autos Limited

Physical Garage

17 Spackmans Way, Slough, SL1 2SA

About Us

We are a friendly and reliable garage based in Slough. We do all types of mechanical work. MOT's, Clutch replacements and much more.

Diagnostic Check£60

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5 (2 reviews)

Motor Vehicle Services - Slough Logo

The Garage, Lorne Close, Slough, SL1 2TL

About Us

Motor Vehicle Services is a family run business which was established in 1996, with over 50 years of combined main dealer & independent experience. Our workshop is like an Aladdin's cave of equipment and technical information so you can be confident that your vehicle is in safe hands. Although we are based in Slough, we have customers that come from far and wide to use our services. One thing these customers all have in common is they say that when you find an honest, reliable and confident garage you don't want to go anywhere else. Please feel free to contact us with any enquiries and our friendly team will be happy to help.

Diagnostic Check£55

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4.99 (17 reviews)

XA Car Ltd Logo
XA Car Ltd

Physical Garage

353 Bath Rd, Slough, SL1 5PR

About Us

At XA Cars Ltd, we pride ourselves on delivering reliable, professional, and affordable automotive services to keep you safely on the road. Our skilled technicians are experienced in working on all makes and models, offering everything from routine servicing and MOTs to complex diagnostics and repairs. We combine the latest tools and technology with a commitment to honest, transparent advice, ensuring every customer receives the highest standard of care. Whether you need a quick check-up, new tyres, or major repairs, you can count on us for efficient service and competitive pricing. Customer satisfaction is at the heart of what we do, which

Diagnostic Check£60

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4.98 (16 reviews)

Berks Automotives Logo
Berks Automotives

Physical Garage

Thomas House, Petersfield Avenue, Slough, SL2 5EA

About Us

Berks Automotives is a trusted car garage in Slough, located at Thomas House, Petersfield Avenue, SL2 5EA. We offer professional mechanical repairs, electrical diagnostics, engine work, full car servicing, brake and clutch repairs, suspension work, and air-conditioning services. Our bodywork team handles accident repairs, dents, scratches, and resprays. We also supply and fit tyres, offer wheel alignment, puncture repairs, and safety checks. Your one-stop shop for reliable, affordable car care.

Diagnostic Check£40

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4.97 (25 reviews)

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 your local area. 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.