A1 Diagnostics - Independent German Car Specialists

03/09/2026

A fresh MOT doesn’t mean your car is in perfect health. 👀

An MOT checks whether your car meets the minimum legal safety and environmental requirements at the time of the test.

You can still pass with advisories for worn tyres, brakes, suspension and other components that may soon need replacing.

An MOT is a test. It doesn’t service, maintain or repair your car.

If your MOT or car service is due in Cardiff, get in touch with A1 Diagnostics.

📍 Cardiff, South Wales

01/09/2026

Looking for a vehicle specialist in Cardiff?

At A1 Diagnostics, we can help with:

• ADAS vehicle calibration
• Immobiliser repairs
• Car key coding & programming
• ECU repairs
• ABS & brake repairs
• Electrical fault finding
• Engine rebuilds & repairs
• DSG gearbox repairs
• Car servicing
• MOTs
• And much more

Based in Cardiff.

01/09/2026

A recent Audi A3 visited our garage in Cardiff needing some sophisticated coding undertaken. Here is the car shown below in one of our ADAS bays. Read more here.

If you need any coding carried out on your Audi A3 such as blind spot assist technology we can help just get in touch with our vehicle service advisers today

31/08/2026

A comprehensive article explaining what DSG gearboxes are and the DSG gearbox servicing we can carry out here at A1 Diagnostics. Check out the video of a recent job. Read more here.

Why A1 Diagnostics Is the Independent Garage to Choose for DSG Gearbox Servicing here in Cardiff get in touch for a quote today

28/08/2026

Think A1 Diagnostics only services high-end cars?
Not even close.

We look after everything from everyday runarounds and family cars to vans and performance cars.

Regular servicing can help spot wear, faults and developing problems before they become much more expensive repairs

Need a service, MOT or diagnostics in Cardiff?

Give A1 Diagnostics a call

📍 Cardiff
📞 02920 220380

18/08/2026

If you have never come across our garage here at A1 Diagnostics based in Cardiff read more here :)

We are an award winning independent garage based here in Cardiff with 20 plus years experience

17/08/2026

If you need a new engine on your Ford Transit vehicle we can supply and fit one for you. Read more here :)

If you are in need of a full engine replacement for your Ford Transit we can supply and fit one for you.

14/08/2026

An incorrect diagnosis doesn’t just cost time, it costs you money, Guesswork repairs lead to parts replaced that didn’t need to be, problems missed that come back worse, and bills that keep climbing. Proper diagnostics first, repairs second. That’s how you fix it right the first time

14/08/2026

Get in touch if you ADAS driver assisted systems have come out of alignment we can re-calibrate them for you.

02920 220 380

13/08/2026

Another five star review from a happy customer. Get in touch if you need any vehicle repair services we can help.

02920 220 380