If you have never come across our garage before then let’s explain more about who we are. Firstly, check out the video below.
We are an independent garage that has 20 plus year’s experience in the vehicle service trade.
We have 11 vehicle service ramps and employ mechanics with years of vehicle maintenance experience.
We invest in all the latest vehicle diagnostics equipment ensuring we offer only reliable vehicle maintenance services. We pride ourselves on fast lead times getting you back out on the road reliably at competitive rates.
Services we offer here under our garage roof
Engine services
We provide professional engine services designed to keep your vehicle performing at its best. From diagnosing engine faults and warning lights to complex repairs and ongoing maintenance, our experienced engine mechanics use advanced diagnostic technology to identify problems accurately and get to the root cause of faults.
Wheel Alignment Services
We provide professional wheel alignment services using advanced Hunter Engineering technology for precise and accurate results. Our specialist equipment allows our technicians to identify wheel alignment issues and make the necessary adjustments, helping to improve vehicle handling, reduce uneven tyre wear and keep your vehicle performing as it should.
DSG Gearbox services
DSG gearbox services for modern vehicles is a core service we offer here at A1 Diagnostics. We combine advanced diagnostic technology with experienced workmanship. Whether you’re experiencing difficult gear changes, warning lights, loss of performance or other DSG-related issues, our mechanics can accurately investigate the problem and provide the appropriate servicing or repair.
MOT and Servicing
If you vehicle is due an MOT or service, we provide professional MOT testing and vehicle servicing to help keep your car safe, reliable and performing at its best. From routine maintenance and annual servicing to MOT inspections and necessary repairs, our experienced mechanics provide a complete service under one roof.
ADAS Calibration Services
Sometimes driver assisted systems known as ADAS will need re-calibrating, we offer ADAS services using advanced equipment to ensure your vehicle’s driver assisted systems operate accurately. Following repairs, wheel alignment, windscreen replacement or work involving cameras and radar sensors, ADAS calibration may be required to restore correct system performance. Our experienced technicians carry out precise calibrations for modern vehicles, helping systems such as lane assistance, adaptive cruise control and other ADAS systems function correctly.
Ecu Coding
We provide specialist ECU coding and programming services for modern vehicles. Whether a control module has been replaced, updated or requires configuration, our experienced technicians can carry out professional coding to ensure it communicates and operates correctly with the vehicle. With extensive expertise in modern vehicle electronics, we provide a reliable solution for complex ECU and module-related work.
Key Coding
Vehicle key coding and programming services is a core service we offer here at the garage. We use advanced equipment to code and program your vehicles key. Whether you require a replacement key to be programmed, an additional key added or assistance with a key-related vehicle fault, our experienced technicians can provide specialist support.
Vehicle Electrical Repair Services
We specialise in diagnosing and repairing complex vehicle electrical faults. From wiring problems, sensors and warning lights to control modules, charging systems and other electronic components, our experienced technicians use advanced diagnostic equipment to accurately trace faults and identify the correct repair. With modern vehicles relying heavily on sophisticated electronics, you can trust our Cardiff team to provide professional and reliable electrical repair solutions.
We offer many more services employing mechanics with 75 years plus of combined experience in the vehicle service trade.
We are an award-winning independent garage
Not only do we have 20 years established experience we have also won both local and national awards. Just last year we won the award for “Innovation Business of the Year” at the Cardiff Business Awards 2025. Here is the award shown below:
Contact us
If you are experiencing problems with your vehicle then we can diagnose the faults quickly, rectify them and get you back out on the road in no time at all. We offer our vehicle services at competitive rates and will pin-point exact faults. Use the contact details below or form to get in touch and our vehicle service advisers will be in touch ASAP.
A1-Diagnostics and ECU Repairs
64 Sloper Road
Leckwith,
Cardiff
CF11 8AB
Tel: 02920 220 380
Opening Times
Mon – Fri: 8:00am – 6:00pm
Email: info@a1-diagnostics.com