Independent German Car Specialists
Welcome to A1 Diagnostics. We are a BOSCH vehicle service garage based in the heart of Cardiff offering professional vehicle servicing from our garage workshop.
MOT Service Cardiff
A1 Diagnostics provide MOTs In Cardiff to the Public and Private Sectors. With our highly qualified MOT team your car is in safe hands
About A1 Diagnostsics
Read more about the services we offer here at A1 Diagnostics.
We service all brands of vehicles
We specialise and service all makes of vehicles especially German manufactured vehicles.
Professional Mechanics
Our mechanics are trained on the latest technologies and have the most up-to-date diagnostic equipment to pinpoint any faults. Our mechanics work together as a team and have years of combined experience in the motor trade.
Car Servicing Cardiff
Get your car serviced efficiently and quickly at A1 Diagnostics in Cardiff
ABS Repairs Cardiff
Anti-Lock Breaking System (ABS) can also be a costly repair to your car in Cardiff
Air Conditioning Servicing Cardiff
Having the state of the art air conditioning unit means looking after it and having it checked once a year
ECU Repairs Cardiff
ECU Repairs Cardiff are able to rebuild, test and remanufacture ECU units on our test bench in Cardiff
Electrical fault service Cardiff
Electrical fault service Cardiff can help diagnose your electrical fault problems in Cardiff
Engines and Gearboxes Cardiff
We can repair, rebuild and offer many engine and gearbox services from our Cardiff based vehicle service garage. Contact us for any advice needed we are happy to help.
Immobiliser Repairs Cardiff
A1 Diagnostics and ECU repairs can fix your immobiliser repair problems quickly
Key Coding Cardiff
Key Coding Cardiff can be done at A1 Diagnostics Cardiff
Car Recovery Cardiff
Broken down in the Cardiff, South Wales area? Choose Car Recovery Cardiff at A1Diagnostics
We have a state of the art vehicle electronics bay
We have our own electronics bay to diagnose electronic related vehicle problems. From electrical engine faults to ECU repairs we have all the equipment needed to repair electrical faults in your vehicle.
Cosmetics vehicle service
If you have scrapes and scratches in the interior we can repair them for you leaving your vehicle looking as good as new.
We are experts in gearbox rebuilds and repairs
We have extensive experience in gearbox rebuilds, reconditioning and repairs at competitive prices.
We are experts in engine rebuilding and repairs
We rebuild and repair hundreds of engines every year. Contact us if you have any engine issues we can help.
MOT vehicle testing
We have two MOT test lanes and offer affordable MOT servicing. Contact us if you have any queries.
Brake servicing at affordable prices
We service brakes of many vehicle brands and types. Contact us for any advice on brake problems you may be having.
We do breakdown recovery
If you do not have breakdown cover don't worry we can pick your vehicle up repair it and return it to you. Contact us for any advice needed.
Air conditioning vehicle servicing
We can help you stay cool and ensure your vehicles air conditioning is working perfectly. Contact us for any advice needed.

We are an independent gearbox expert repairing and reconditioning gearboxes of all major brands

We are an independent gearbox service centre. We can service gearboxes of all major brands, whether that’s supplying, fitting, repairing or reconditioning gearboxes we can help you. See the major vehicle brands we can service highlighted below.