Remember we are the best German car vehicle specialists driven by our customers

We service many vehicles from Vauxhalls, Nissan, Toyota, Fords, Bentleys and more but remember we are known for being experts in servicing German manufactured vehicles also from Mercedes, BMW, Skoda, Audi and Volkswagen and more. We have the mechanics specially hired who have expert knowledge in these brands of vehicle so if you have any issues with your German manufactured vehicle then we are a great place to come for an assessment.


We are certified by Bosch and not only that we were recently audited by BOSCH Service and passed the audit with flying colours, we were awarded with a certificate of acknowledgment for car service quality and outstanding results produced from our Cardiff based service garage pictured below.


Read more about the quality audit here and also examples of how we have saved our customers money avoiding high prices from main dealers.

Here are a range of photos taken at our Cardiff based vehicle service garage of a whole range of German manufactured vehicles being serviced by our experienced mechanics.








These cars were serviced for a variety of things from brake checks, oil pressure, electric window faults, engine rebuilds, new clutches being installed and problems with seats not reclining properly. We are telling you this because there is literally no job to small or big for us, we can strip down your engine and replace parts in the engine or we can help with simpler problems like electric window faults.

Not only are we the best in Cardiff when it comes to servicing German manufactured vehicles but we are also the best on price and affordability, we are driven by our customers’ needs and invest in all of the latest and modern equipment needed to ensure reliable services and maintenance vehicle repairs so you don’t keep coming back and forth to the garage with cost after cost to pay.

Check out the latest bit of kit we invested £20,000 in, this Autologic system and software can be plugged into your German manufactured vehicle and will help us identify and find the exact faults in the vehicle, this software and system investment will help us ensure a much more reliable vehicle service pin pointing the exact problem and fixing it so you don’t have to keep coming back to the garage.



For a full overview of recent facilities and equipment we have invested in follow the link below so you can see for yourself we mean business when it comes to servicing your German manufactured vehicle and strive to be the best in Cardiff.

Get in touch with us and start learning about our services and how we can help you we are only a phone call away. We have a large service garage that can service your car or German manufactured vehicle quickly so there is no waiting around, we make it a priority to get you out back on the road safely and soundly at the best prices.

Contact A1 Diagnostics

If you require any advice on any of the services mentioned above contact us to book an appointment or enquire using the contact details below.

A1-Diagnostics and ECU Repairs
64 Sloper Road
CF11 8AB

Tel: (029 20) 220380
Fax: (029 20) 223172

Opening Times

Mon – Fri: 8:00am – 6:00pm


Read more:
More recent car service work from our car garage

It has been a busy month once more at our garage pictured below. We have been carrying out a whole...