Engine Diagnostics

Professional Engine Diagnostics in Gorseinon, Swansea

At Celtic Auto Group in Gorseinon, Swansea, we specialise in engine diagnostics and fault finding for all makes and models of cars and light commercial vehicles. Modern vehicles are fitted with advanced onboard computers that constantly monitor performance, emissions and safety. When something goes wrong, a warning light may appear on your dashboard – but identifying the exact cause requires professional diagnostic testing. Our skilled technicians use the latest equipment to quickly pinpoint faults and recommend the best repair solution, saving you time, money and unnecessary guesswork.

Why Engine Diagnostics Are Important

Ignoring a warning light or engine issue can lead to serious problems, costly repairs and even roadside breakdowns. With our vehicle diagnostics service in Swansea, we can detect problems early before they escalate. Common issues identified through diagnostics include:

• Engine misfires or poor performance
• Excessive fuel consumption
• Emissions system faults
• Faulty sensors or wiring problems
• Problems with the ECU (Engine Control Unit)
• Transmission or gearbox faults linked to engine performance

State-of-the-Art Diagnostic Equipment

At Celtic Auto Group, we continually invest in the latest engine diagnostic tools and software, allowing us to carry out accurate checks on all vehicle makes and models. Our equipment connects directly to your car's ECU, retrieving fault codes that highlight exactly where the problem lies. This ensures fast and precise diagnosis, helping us get your vehicle back to peak performance as quickly as possible.

Authorised Service Centre for Subaru, Mitsubishi & KGM

As an authorised servicing and parts garage for Subaru, Mitsubishi and KGM (formerly SsangYong), we have direct access to manufacturer-approved diagnostic systems and genuine parts. This means we can carry out diagnostic tests and repairs to factory standards, ensuring your vehicle warranty remains protected. For all other makes and models, we use high-quality diagnostic tools and replacement parts to guarantee reliable results.