Looking for the Best Car Diagnosis in Dubai » ? Grand City Auto Service offers state-of-the-art vehicle diagnostics using advanced scanning tools for all major car brands. Whether you're facing warning lights, engine issues, or performance drops, our expert technicians provide quick fault detection, ensuring reliable solutions. We specialise in ECU testing, engine diagnostics, and full system scanning for petrol and diesel vehicles. Trusted by car owners across Dubai, we guarantee honest advice and timely service to keep your vehicle running smoothly.