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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

£75.61
Average diagnostic checks price100th in South East
4.72
Average customer ratingBased on verified feedback
2,385
Customer reviewsFor garages in Slough
27,000+
drivers compared prices to book diagnostic checksin Slough in the last 12 months

What local drivers say about garages in Slough

AI Generated

Drivers in Slough report consistently positive experiences, praising friendly, professional staff, honest and transparent pricing, and clear communication throughout their visit. Many highlight quick turnaround times, a willingness to fit in last-minute bookings, and helpful advice that avoids unnecessary extras, with several returning year after year. A few drivers mention that waiting times can occasionally run longer than expected and that more proactive updates or booking confirmations would be welcome, but these were minor points in otherwise very strong feedback.

18
Verified garages in Slough4th in South East
Gold Tier2Goldgarages
Silver Tier2Silvergarages
4Total Tieredgarages

Top Rated

1SwiftFix Auto Ltd 5.0
2A2Z AutoZone 5.0
3PJM AUTOS 5.0

Most Reviewed

1Advanced Auto Technik876 Reviews
2Dropless Mobile Servicing (South)579 Reviews
3C&G Autos Slough254 Reviews
22
Garages offering Diagnostic Checks
2
Garages open outside standard hours
21
Garages open on Saturdays
18
Garages offering collection & delivery
6
Garages offering monthly repayments
4
Garages registered with Motorcodes
7
Garages on IMI Professional Register
7
RMI member garages
15
Garages offering 12-month parts & labour warranty

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

22 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

Why You Should Choose Us for Your Diagnostic Check in Slough

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

Book Now

4.78 (876 reviews)

5.0/5.0
Verified
“Great Service as always”
Would recommend
Review left: 02/11/26
3.5/5.0
Verified
“Good service but no communication”
Would recommend
Review left: 26/10/26
5.0/5.0
Verified
“Great Professional & Reliable Service”
Would recommend
Review left: 25/10/26
Dropless Logo
Dropless

Mobile Mechanic

268 Bath Road, Slough, London, SL1 4DX

Why You Should Choose Us for Your Diagnostic Check

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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4.67 (579 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
“Amazing service”
Would recommend
Review left: 02/11/26
5.0/5.0
Verified
“Oil Change”
Would recommend
Review left: 02/11/26
5.0/5.0
Verified
“Excellent service”
Would recommend
Review left: 01/11/26
C&G Autos Slough Logo
C&G Autos Slough

Physical Garage

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

Why You Should Choose Us for Your Diagnostic Check in Slough

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 (254 reviews)

Reviews Summary

AI Generated

Reviewers consistently praise this garage for friendly, honest and professional service, with clear communication, quick turnaround and helpful advice that avoids unnecessary extras, which particularly reassured first-time owners and women drivers. Pick-up and delivery, MOTs, servicing and air conditioning work were all well received. One reviewer felt the final price for an air conditioning regas was higher than the quote, so being clearer about costs up front may help avoid that.

5.0/5.0
Verified
“Great Service”
Would recommend
Review left: 22/10/26
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
Johnsons Honda Slough Logo
Johnsons Honda Slough

Physical Garage

748-749 Dover Road, Slough, SL1 4RF

Why You Should Choose Us for Your Diagnostic Check in Slough

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
Rosewood Garage Logo
Rosewood Garage

Physical Garage

4b Kelpatrick Road, Cippenham, Slough, SL1 6BW

Silver Tier Garage

Why You Should Choose Us for Your Diagnostic Check in Slough

Rosewood Garage is a family-run independent garage that has been maintaining cars and vans in the Slough area for almost 17 years. We are your local, trustworthy one-stop solution for all things automotive. From tires and brakes to servicing and MOTs, we do it all onsite at a price you'll love! Our team has over a century of combined experience working on every make and model, servicing, diagnosing faults, and carrying out repairs on every manufacturer. Why not give us a call today to discuss any needs you may have?

Diagnostic Check£54

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4.83 (52 reviews)

Reviews Summary

AI Generated

Customers consistently praise this garage for its swift turnaround times, clear communication throughout the repair process, and honest, transparent pricing with no hidden charges. The team is repeatedly described as trustworthy and knowledgeable, with many reviewers highlighting their willingness to accommodate last-minute bookings and keep customers informed at every stage. One reviewer raised concerns about communication and an MOT result they disputed, though this was an isolated view that stands apart from the overwhelmingly positive feedback across many years of loyal custom.

5.0/5.0
Verified
“Great Service”
Would recommend
Review left: 03/11/26
5.0/5.0
Verified
“Great service around Slough”
Would recommend
Review left: 20/10/26
5.0/5.0
Verified
“Great service”
Would recommend
Review left: 18/10/26
MasterTech AutoCare - Bosch Car Service Logo

Unit 1 White Hart Rd, Slough, SL1 2SF

Gold Tier Garage

Why You Should Choose Us for Your Diagnostic Check in Slough

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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4.58 (100 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.

5.0/5.0
Customer Review
“Great service”
Would recommend
Review left: 02/11/26
5.0/5.0
Customer Review
“Attentive and great service”
Would recommend
Review left: 21/10/26
4.5/5.0
Verified
“MOT and Service”
Would recommend
Review left: 03/09/26
Prestige Cars Berkshire Logo

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

Why You Should Choose Us for Your Diagnostic Check in Slough

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 (9 reviews)

5.0/5.0
Customer Review
“Excellent Service At A Good Price - Thanks to Mustafa”
Would recommend
Review left: 16/10/26
5.0/5.0
Customer Review
“ABS pump”
Would recommend
Review left: 18/09/26
5.0/5.0
Customer Review
“Head gasket”
Would recommend
Review left: 17/09/26
Autobarn London Ltd Logo
Autobarn London Ltd

Physical Garage

DITTON Road, Windsor, SL3 9LR

Why You Should Choose Us for Your Diagnostic Check

Diagnostic Check£60

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5 (6 reviews)

5.0/5.0
Customer Review
“Excellent”
Would recommend
Review left: 04/11/26
5.0/5.0
Customer Review
“Fast service”
Would recommend
Review left: 04/11/26
5.0/5.0
Verified
“Great service”
Would recommend
Review left: 17/10/26
P3 Autos Limited Logo
P3 Autos Limited

Physical Garage

17 Spackmans Way, Slough, SL1 2SA

Why You Should Choose Us for Your Diagnostic Check in Slough

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
A2Z AutoZone Logo
A2Z AutoZone

Physical Garage

16A, Canada Road Slough, 16A, Canada Rd Slough, SL11SE, Slough, SL1 1SE

Why You Should Choose Us for Your Diagnostic Check in Slough

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

Looking for Diagnostic Checks near Slough?

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See How Much Diagnostic Checks Cost Near You

Live price ranges across towns near Slough

TownDiagnostic Check
Slough£55–£100
Reading£30–£116
Milton Keynes£30–£72

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.

Our Spotlight Garage in Slough Advanced Auto Technik

Gold Tier
★ 4.8
out of 5
876
verified reviews
£100.00
from

“Service, MOT and fixing one MOT Issue found - quick, efficient and fair pricing! Will be back next year!”

– Paul, BMG-Verified review

Why Advanced Auto Technik Stands Out

✓ Gold tier status✓ Waiting area available✓ Loan car available✓ Collection & delivery

Opening Hours

MonClosedTue–Fri08:00 – 18:00Sat08:00 – 17:00SunClosed

*All information accurate as of November 6th 2026