Get Your Car Purring Again with Expert Diagnostics at Hopkins Car Repairs
Is your car making strange noises? Warning lights flashing? Don’t ignore these signs! At Hopkins Car Repairs, we offer comprehensive car diagnostics in Newport and Ponthir, helping you identify and fix problems before they become major headaches (and expenses).
Diagnostic Checks We Carry Out
While you can carry out basic diagnostics yourself, more complex checks often require specialised tools and expertise. If you’re unsure, we recommend consulting us so that a qualified mechanic can perform a comprehensive vehicle diagnostic assessment, especially if you experience any warning lights, unusual noises, or performance issues.

The list below is a snapshot of some of the diagnostics we perform, it is not an extensive list, please contact us if you require assistance.
- Fault code retrieval: Modern vehicles store diagnostic trouble codes (DTCs) that indicate potential problems. Scanning these codes with a specialised tool can provide valuable clues about the issue.
- Compression testing: This test measures the pressure in each engine cylinder to identify any leaks or wear and tear in the pistons, rings, or valves.
- Engine performance: This involves checking parameters like engine speed, air-fuel ratio, ignition timing, and exhaust emissions to assess the engine’s overall health and efficiency.
- Vacuum testing: This test checks for leaks in the intake manifold, hoses, and other components that can affect engine performance and fuel economy.
- Gearbox/Transmission fluid level and condition: The gearbox/transmission fluid level should be within the specified range and free from contaminants.
- Gearbox/Transmission change: This involves checking for smooth gear changes and the absence of slipping or hesitation.
- Brake pad and disc wear: The thickness of the brake pads should be within the recommended limits to ensure safe and effective braking. The brake discs should be free from warping, cracks, or excessive wear.
- Battery health: The battery voltage and cranking power should be within the specified range.
- Alternator performance: The alternator should be generating enough power to charge the battery and maintain the electrical system.
- Starter motor: The starter motor should engage the engine quickly and smoothly without any grinding noises.
- Fuse box and wiring: All fuses should be intact, and the wiring should be free from damage or corrosion.
- Suspension and steering: This involves checking for worn components, loose joints, and proper alignment to ensure a smooth and stable ride.
- Exhaust system: This involves checking for leaks, cracks, and blockages that can affect engine performance and emissions.
- Air conditioning and heating: This involves checking for refrigerant leaks, proper airflow, and efficient operation of the system.
Why Choose Hopkins Car Repairs for Your Car Diagnostics?
- Experienced & Certified Technicians: Our team boasts years of experience and holds industry-recognised certifications, ensuring accurate diagnoses and repairs for all car makes and models.
- Cutting-Edge Technology: We invest in the latest diagnostic tools and equipment, allowing us to pinpoint even the most complex issues quickly and efficiently.
- Transparent Communication: We explain everything in a clear and concise way, keeping you informed throughout the diagnostic and repair process. No jargon, just honest advice and solutions.
- Competitive Prices & Fixed Quotes: We offer fair and competitive prices for all our services, and you’ll receive a detailed quote upfront, so you know exactly what to expect.
- Convenient Location: Situated with garages in Newport and Ponthir, thus with easy access from all surrounding areas of South Wales, we make it easy to drop off your car and get back on the road quickly.
- Customer Satisfaction Guarantee: We stand behind our work and offer a satisfaction guarantee, ensuring your peace of mind.