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car diagnostics

Car Diagnostics Milton Keynes

Has the Engine Management light or any dashboard warning lights come on in your vehicle?

Do you have squeaky brakes or do you hear a grinding noise when braking?

Let Quality Car Service Milton Keynes put your mind at rest. If you are not sure what to do, don’t drive your car.

Just give us a call now to discuss the problem. We will ask you to bring your car in and check the problem for you.

car diagnostics

Why choose us?

Quality Car Service in Milton Keynes pride ourselves on providing you, the motorist, with the highest quality services at competitive prices.

Our technicians are trained to the highest level with many years combined service in the industry.

Located just off the A5 in the centre of Milton Keynes we’re easy to get to and you can combine your visit with a shopping trip or wait in our relaxing reception area.

car diagnostics
car diagnostics

Diagnostics expertise

Using up-to-date diagnostic technology specific to each car brand is crucial. It allows us to correctly and systematically work through any fault, saving customers money by avoiding any unnecessary replacement of car parts.

Handling all car makes and models and specialising in more than 40 car brands, we can confidently say that our technicians are more qualified to deal with your problem.

Contact Quality Car Service today to book your diagnostic check.

car diagnostics

Diagnostic technology

At Quality Car Service, Milton Keynes we continuously invest in the latest car diagnostic and repair technology. We use the most advanced diagnostic software, equipment and tools, on par with main dealers.

With today’s technologically advanced vehicles the engines are controlled by the cars’ onboard computers, the ECUs.

This is why it’s important you choose a reliable trusted garage that has access to the latest tools and software, and the highest level of expertise to correctly and efficiently diagnose and repair your car.

Identify and diagnose faults

When the Engine Management light or one of the dashboard warning lights comes on, our highly qualified technicians can read the ‘trouble codes’ and, using specialist diagnostic equipment, trace the fault to its original cause. Clearing the fault code without first identifying the cause will increase the amount of time it takes to properly diagnose a fault.

It is important to understand that sometimes the problem may not be just the sensor; it could be a connection, wiring or even a problem with the ECU itself. In fact, at Quality Car Service, our car diagnostic test is so thorough that we can not only identify the root cause of an electronic problem, but we also check faulty or worn mechanical components which cannot be diagnosed by your car’s ECU such as squeaky brakes or a grinding noise when braking.

car diagnostics

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Trust us with your vehicle diagnostics

Car diagnostic test as a preventative measure

Many of us go to the doctor, dentist or optician for a regular check-up, just in case we have a problem that could turn into something more serious.

This ‘regular check-up’ approach should also be applied to the upkeep of our cars. One of the best and most cost-efficient ways of doing this is with an annual car diagnostic health check.

Many problems with these components and others, if found early can be rectified, either with an adjustment, repair or replacement, which could potentially save you money, help prevent accidents or breakdowns and significantly extend the life of your vehicle.

Book your annual car diagnostic health check today, either using the booking button on the website or give us a call to speak to one of our expert advisors.

car diagnostics

Vehicle fault diagnostics in Milton Keynes

At Quality Car Servicing in Milton Keynes, our high-spec, fault diagnostic equipment is able to help us quickly diagnose major and minor faults in components connected to your cars ECU (Engine Control Unit) including faults with:

  • Anti-locking Brake System (ABS)
  • Tyre pressure monitoring system
  • Transmission control module
  • Immobiliser
  • Emissions levels
  • Ignition coils
  • Fuel injectors

Would you like to know more about what we do?

Check out our blog!

3 reasons to book your diagnostics today


Buying a used car: When buying a used car, either privately or through a dealer, it’s vital you know the vehicle’s service history, as well as obtaining a vehicle diagnostics report.

With the sellers permission, Quality Car Services will give the vehicle you’re thinking of buying a comprehensive diagnostics check using our advanced diagnostics equipment.

We’ll check things such as the ABS braking systems, all the electrics and electronics, air-conditioning systems and many other components that should be in good working order when buying any used vehicle.


Need a second opinion: Major repairs to your vehicle can be costly, and often, it’s a good idea to get a second opinion before agreeing to have any work carried out.

At Quality Car Servicing, the diagnostic testing equipment we use is comparable to the equipment used by main dealers. This gives us the advantage over many other diagnostic garages, as we have the ability to delve much deeper and diagnose issues others may have missed.


Hearing noises in the car: All vehicles make strange, unexplained noises at times. Often these are just the normal inner-workings of the engine or other mechanical parts. But, at other times a noise could be a warning of something more serious.

By booking an engine diagnostics test at our Milton Keynes garage, our highly-qualified and skilled mechanics will be able to quickly locate the possible cause of the noise, preventing the need for a more time-consuming and more costly, manual investigation.

Book at your local garage in Milton Keynes

Other benefits of using Quality Car Service:

Free courtesy car

We offer a range of courtesy cars to keep you on the road whilst we care for your car. To reserve a courtesy car, please let one of the team know when you arrange your appointment.

We’ll be happy to help you in any way, and help you pick the best courtesy car for you.

Collection service

After you’ve requested and we’ve confirmed a time slot one of our technicians can come to your home or workplace to collect your car.

You’ll be asked to place your car keys on a hard surface so that the technician can collect them on arrival. After your service is complete your vehicle will be fully sanitised and returned to you.

Finance payment plans

Where possible, we are able to offer payment plans, to allow you to spread the cost of any work required on your car.

Please ask one of our team, or contact us if you have any questions about the finance plans we offer.

Why use us?


Once you try our services, you are guaranteed to receive an honest, reliable, friendly and highly professional service.


As an independent local car garage, our expertise exceeds that of the main dealer, but we certainly don’t charge main dealer prices!


We quote you upfront before we carry out any work.


We show you photos of your repair work, in person or via email.


We give you the full service checklist sheet, in person or via email.


We show you the parts we’ve removed.

What our clients think

  • Destiny Parara

    12th June 2024

    We could and can not thank Ben enough!! We had to rush r little one to hopsital the night before my partners car needed doing So told Ben we’ll have to cancel r appointment with him and he kindly suggested he’ll come pick the car up so it was one less thing to worry (my partner really needed his car doing) and so I can rest and focus on my family and he kindly dropped my partners car bk... Read More

  • Matt Rogers

    9th May 2024

    Booked my car in with QCS after ongoing poor service from Audi plus eye watering costs, plus a wait of over a month to get in to deal with a fault. From the first phone call the service was excellent, the car booked in promptly, fault diagnosed and fixed, all for a very reasonable price. Goodbye Audi!

  • Georgia Stojsavljevic

    29th April 2024

    Very friendly and helpful!! Would not fault

  • Graham Waters

    26th April 2024

    Great bunch of lads and most importantly, honest.

  • Loz Sawbridge-Praties

    10th March 2024

    Took care of a warranty issue with my car quickly and effectively. The work was top notch and completed really quickly! Would definitely recommend

  • Jane Webb

    27th February 2024

    Absolutely amazing service. Ben totally looked after my pride and joy VW T5 camper. I would not trust my van with most garages.Quality Car Service kept my car exceptionally clean fixed everything perfectly. It's very hard to find a good garage these days . But these guys are the best. Very highly recommend them. Thanks so much JD

  • Mark Rockingham

    14th February 2024

    Fantastic quick efficient service, been having my cars serviced and repaired for many year's and very reasonably priced.

  • sham suthakar

    8th February 2024

    Excellent work ethic trustworthy and excellent service all round 👍👍👍

  • Elizabeth Sheldon

    26th January 2024

    Brilliant service from a fantastic team. Highly recommended as they go above and beyond to look after their customers

  • Damian Shadie

    24th November 2023

    Friendly staff and great service

  • greg prevost

    23rd November 2023

    Great professional quality and excellent communication. Great standard of service you will not go wrong using this garage. Friendly bunch of staff. With no hidden costs. A1 service guys.👍🏾👍🏾👍🏾👍🏾

  • Ian Blanchard

    13th November 2023

    Very easy booking in procedure. Everything carried out on time and to a reasonable time.

  • Jessica Compton

    6th November 2023

    Cannot recommend Ben and the team enough. After a nightmare experience buying a car from Trade Centre UK, i had no end of issues that they would not resolve (a whole other story!!). Having used QCS multiple times over the years, I took the car to them and they were so patient, running various tests and fixed all the problems. Their communication was great and they took a lot of stress out of... Read More

  • Hasmit Popat

    4th November 2023

    Dealt with Ben, Charlie and the team really friendly and professional service. Trustworthy and honest garage 100% will use again. Had some major work carried out timing chain replacement, spark plugs and oil service. Transparency through the entire process they also kept me updated by email on the progress which was great
    Thank you QCS

  • dean jacobi

    24th October 2023

    Excellent service every time, professional friendly staff and service

  • Iron Daisy

    24th October 2023

    Great service - these guys found an electrical fault on our van that two other garages failed to identify. As their name states, it definitely is a Quality Car (Van in our case) Service!

  • F Khan

    19th October 2023

    I have my cars serviced and MOTd at this centre. During the 4 years I have known this company, I have found the staff to be extremely helpful and welcoming every time I visited, special mention here for Charlie who has been excellent! Their service standards and turnaround times are impeccable and speaking as a person who loves his cars, I would not go anywhere else. Highly recommended, keep... Read More

  • Troy Leslie

    30th August 2023

    Professional garage that provides professional service that’s moneys worth. Pleased with the customer service. Car was repaired in time without any delays and was offered a complimentary car wash 🧼 🚗 before collection. This is now my go to garage. Keep up the excellent standard 👏👏

  • Maureen Briggs

    26th August 2023


  • Anita Bateman

    16th August 2023

    Very helpful and very quick doing repair. Recommended

  • Adrian Lupu

    16th November 2022

  • Anna Williams

    2nd August 2022

    Booked my car in for its MOT and the service from start to finish was amazing! Nothing was too much trouble and was kept updated during the process. Also had my husbands flat tyre in the boot and they fixed it there and then without any drama. Quick and easy to use the online booking system. Will be recommending to friends and family.

  • Daniel Skavydis

    3rd July 2022

    Got my focus remapped here and can not recommend them enough, after a number of company's couldn't get my car mapped, I booked it in here for a full ecu bench map and the improvement in my car is unreal, accerlation has improved significantly aswell as my mpg, thankyou for everything, highly recommend?

  • Bhavesh Naran

    6th June 2022

    Excellent, top class service! Called at 8.00am Monday after Platinum Jubilee weekend and was booked in for the same morning to be diagnosed. Once dropped off, was called a couple of hours later with a report and then promptly fixed same afternoon with collection at 4.30. Would recommend them 100%

  • Martin Kemble

    4th April 2022

    My BMW was now out of warranty Ann’s the first MOT was due. As I had previously been to Qcs with previous cars it was a no brainer to use them again.
    Once again excellent service will use them for all further work 100%. Well done guys

Book at your local garage in Milton Keynes