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Diagnostic Check in Slough

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Slough Diagnostic Checks: Prices, Reviews & Local Insights

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

£76.17
Average diagnostic checks price105th in South East
4.7
Average customer ratingBased on verified feedback
2,287
Customer reviewsFor garages in Slough
38,000+
drivers compared prices to book their diagnostic checksin Slough in last 12 months
5
Verified garages in Slough7th in South East

Top Rated

1A2Z AutoZone 5.0
2PJM AUTOS 5.0
3Prestige Cars Berkshire 5.0

Most Reviewed

1Advanced Auto Technik860 Reviews
2Dropless Mobile Servicing (South)550 Reviews
3C&G Autos Slough253 Reviews
20
Garages offering Diagnostic Checks
1
Garage open outside standard hours
20
Garages open on Saturdays
18
Garages offering collection & delivery

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

20 garages available in your area

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 (860 reviews)

5.0/5.0
Verified
5 As always!
Would recommend
Review left: 30/08/26
4.5/5.0
Verified
Great service👍
Would recommend
Review left: 16/08/26
5.0/5.0
Verified
Audi A1 service
Would recommend
Review left: 12/08/26
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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4.66 (550 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.

5.0/5.0
Verified
Speedy service
Would recommend
Review left: 05/09/26
5.0/5.0
Verified
Fantastic and very convenient, thanks to Sear! 10/10 minus nothing!
Would recommend
Review left: 03/09/26
4.8/5.0
Verified
great service
Would recommend
Review left: 01/09/26
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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4.98 (253 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.

1.0/5.0
Verified
Really bad experience
Wouldn't recommend
Review left: 12/07/26

Reply from Bookmygarage

Thank you for taking the time to share your experience. We're sorry to hear that the price you were charged at the garage differed from the amount quoted when you made your booking. The prices displayed on BookMyGarage are set and managed directly by the garages themselves through their dedicated portal, which allows them to update and maintain their pricing. We understand your concerns and will be contacting the garage to investigate this matter further and to confirm whether they are actively managing and updating their pricing through the portal. Thank you for bringing this to our attention. Feedback such as yours helps us ensure that garages on our platform are providing accurate information and a good customer experience.

5.0/5.0
Verified
Super Local Garage
Would recommend
Review left: 03/07/26
5.0/5.0
Verified
Recommend
Would recommend
Review left: 27/06/26
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.

4.3/5.0
Verified
Great service.
Would recommend
Review left: 15/04/26
5.0/5.0
Verified
Piece of mind
Would recommend
Review left: 15/08/25
1.0/5.0
Verified
Can’t review
Wouldn't recommend
Review left: 21/10/24
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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4.57 (98 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.

4.5/5.0
Verified
MOT and Service
Would recommend
Review left: 03/09/26
5.0/5.0
Verified
Great price fast service
Would recommend
Review left: 28/08/26
5.0/5.0
Verified
Great service
Would recommend
Review left: 25/08/26
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)

5.0/5.0
Customer Review
Would recommend
Would recommend
Review left: 02/03/26
5.0/5.0
Customer Review
Great Service with convenience
Would recommend
Review left: 10/01/26
PJM AUTOS Logo
PJM AUTOS

Physical Garage

Unit E, Riding Court Farm, Riding Court Road, Datchet, SL3 9JT

About Us

We’re proud to introduce our newly opened MOT garage in Datchet! MOT testing for Class 4,5 and 7 vehicles. With over 22 years of experience as a motor mechanic and more than 15 years as a qualified MOT tester, we’re committed to providing honest, reliable, and professional vehicle care. Whether you need an MOT, servicing, or mechanical repairs, you can count on high quality workmanship, fair pricing and friendly service every time. If you’re looking for a trustworthy local garage, we’d love to help. Get in touch today to book your MOT or repair- we look forward to welcoming you.

Diagnostic Check£60

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5 (8 reviews)

5.0/5.0
Customer Review
Top professional service by Paul!
Would recommend
Review left: 03/09/26
5.0/5.0
Customer Review
Efficient and reasonable price
Would recommend
Review left: 02/09/26
5.0/5.0
Customer Review
Great service
Would recommend
Review left: 02/09/26
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)

5.0/5.0
Customer Review
Professional service company
Would recommend
Review left: 28/05/26
5.0/5.0
Customer Review
Excellent Garage, great communication
Would recommend
Review left: 27/05/26
5.0/5.0
Customer Review
Great Service
Would recommend
Review left: 01/05/26
Prestige Cars Berkshire Logo

Unit 1A 65 Alexandra Road, Slough, SL1 2NQ

About Us

With many years of experience working with main dealerships, we have the knowledge and expertise to service and repair all makes and models of vehicles. Our skilled team is committed to providing high-quality workmanship at affordable prices, ensuring your vehicle receives the care it deserves. We offer a wide range of services, including MOT testing, vehicle servicing, mechanical repairs, diagnostics and general maintenance. Whether you need routine servicing or more complex repairs, we're here to help. At our garage, we pride ourselves on delivering honest advice, friendly customer service and great value for money. We strive to make ever

Diagnostic Check£60

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5 (3 reviews)

5.0/5.0
Customer Review
5 Star Service
Would recommend
Review left: 22/08/26

Reply from Prestige Cars Berkshire

Our pleasure to serve you and thank you for your honesty. We are looking forward to seeing you in our garage next time. Thanks, Garage management

5.0/5.0
Customer Review
High quality of work
Would recommend
Review left: 21/08/26
5.0/5.0
Customer Review
Great service
Would recommend
Review left: 21/08/26

Reply from Prestige Cars Berkshire

Our pleasure to serve you and your family in our garage, waiting for you for next time. Many thanks, Head manager Mustafa

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

Book Now

4.99 (18 reviews)

5.0/5.0
Verified
Great service
Would recommend
Review left: 22/08/26
5.0/5.0
Customer Review
Peace of mind
Would recommend
Review left: 22/04/26
5.0/5.0
Customer Review
He is not a mechanic, He is a Auto Doctor
Would recommend
Review left: 17/02/26

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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.