Vehicle Diagnostics
Professional vehicle diagnostic checks for cars and commercial vehicles, helping identify faults quickly and support accurate repairs. Our experienced technicians use diagnostic equipment to pinpoint issues and keep vehicles running safely and reliably.
Accurate Diagnostics for Cars & Commercial Vehicles
Modern vehicles rely on complex electronic systems to manage engine performance, emissions, braking and safety features. When something isn’t working as it should, accurate diagnostics are essential to identify the cause and prevent unnecessary repairs.
At Costin Commercials, we provide diagnostic services for both private vehicles and commercial vehicles, helping drivers and operators understand exactly what’s happening with their vehicle. Using diagnostic equipment, we can read fault codes, analyse system data and identify underlying issues.
Diagnostic checks are particularly useful when faults are intermittent or not immediately obvious. By analysing information from the vehicle’s systems, our technicians can pinpoint problems that may otherwise lead to breakdowns, MOT failures or reduced performance.
Our diagnostic services are commonly used to:
• Investigate dashboard warning lights
• Identify engine or performance issues
• Support servicing or repairs
• Help prepare vehicles for MOT testing
Once the issue has been identified, our team will explain the findings clearly and advise on the most appropriate next steps. In many cases, repairs can be carried out efficiently at our fully equipped workshop.
With over 30 years of experience, we provide clear, reliable diagnostic support for both car owners and commercial vehicle operators.
What Our Diagnostic Service Includes
Why Choose Costin Commercials
Over 30 years’ experience
More than three decades of hands-on experience delivering reliable commercial vehicle servicing, repairs and testing.
Fully equipped workshop
Our six-bay workshop is fitted with modern diagnostic and testing equipment for efficient, in-house work.
Family-run, personal service
A friendly, family-run business offering clear communication and honest, dependable service.
Commercial vehicle specialists
We work exclusively with commercial vehicles and understand the regulations, standards and demands they operate under.
24/7 availability where required
Out-of-hours support available for services that require fast, reliable response.
How We Work
We keep the process straightforward and efficient. From your enquiry to getting your vehicle back into service, our team handles everything with minimal disruption to you.
Initial Enquiry or Call
Call us or send an enquiry to discuss your vehicle and what you need.
Vehicle Assessment
Your vehicle is assessed by experienced technicians using the right tools and procedures.
Work Carried Out
Any required work is completed to a high standard, with safety and compliance in mind.
Vehicle Back in Service
Once complete, your vehicle is ready to return to the road.
Vehicles Covered
We work with a wide range of commercial vehicles, supporting operators across different sectors and vehicle types.
HGVs
Articulated Lorries
Box Vans
Coaches
Minibuses
Fleet Vehicles
FAQs
When should I book diagnostic checks for my vehicle?
Diagnostics are useful when warning lights appear, performance changes or faults are suspected.
Can diagnostics prevent more serious issues?
Yes. Early diagnosis can help identify problems before they develop into major faults.
Do diagnostics cover emissions and braking systems?
Yes. Diagnostic checks can support fault-finding across multiple vehicle systems.
Can diagnostics be carried out alongside repairs or servicing?
Yes. Diagnostics are often used to support servicing or targeted repairs.
Need help with your vehicle?
Whether it’s servicing, testing, repairs or urgent support, our experienced team is here to help.