Advanced Diagnostics
Systematic investigation of difficult, intermittent and persistent vehicle faults.Find the cause of complex or recurring faults.
Advanced Automotive Diagnostics
UK'S FIRSTNO FIX NO FEECAR DIAGNOSTIC
Advanced automotive diagnostics
Southampton · HampshireScroll to discover ↓
The MrDiag Philosophy
THE MAN BEHIND MRDIAG.Meet Ali
My journey with mechanics started long before it became my profession. As a child, my toys were hand tools, and my curiosity was endless. I didn't just want to fix things — I wanted to understand why they failed.I grew up taking things apart to find out why they failed. More than 20 years later, I still bring that curiosity to every job.
More than 20 years later, that curiosity still drives me.
I believe every fault has a reason, and every repair should have evidence behind it. I don't believe in replacing parts based on guesswork. My job is to find the real problem, explain it clearly, and fix it properly.I test for the cause, explain what I find and recommend repairs based on the evidence.
That's not just how I work. That's why I created MrDiag.
20+ YearsAutomotive experience
No FixNo Fee diagnostics*
Our Expertise
ENGINEERED TO DIAGNOSE.Diagnostic services
Complex faults demand more than a code reader. Discover specialist diagnostic and programming services.
Auto Electrical
Precision testing of wiring, sensors, control modules and vehicle communication networks.Test wiring, sensors, modules and networks.
ECU Programming
Specialist ECU coding, module configuration and software-related solutions.ECU coding and module configuration.
Non-Start Faults
Expert investigation of crank/no-start, immobiliser and electrical starting problems.Trace starting and immobiliser faults.
Vehicle Systems
ABS, airbag, body electronics, transmission and other complex vehicle systems.ABS, airbags, body electronics and transmission.
Trade Support
Advanced diagnostic assistance for independent garages and motor trade partners.Diagnostic support for garages and the motor trade.
A DIFFERENT STANDARD IN CAR DIAGNOSTICS
UK’S FIRST NO FIX NO FEE
CAR DIAGNOSTICS
NO GUESSWORK.NOT LIKE OTHERS.
WE DON'T JUST MAKE PROMISES.
WE STAND BEHIND OUR WORK.
Anyone can say they're good at diagnosing cars. We believe the strongest statement a diagnostic specialist can make is to put their own fee on the line. That's why MrDiag offers No Fix, No Fee diagnostics on eligible jobs.We test to find the cause before recommending any parts or repairs.
We don't guess and tell you to replace parts. We investigate, test and look for evidence before recommending a repair. Our reputation is built on finding the real fault — not selling you another guess.
No Fix No Fee applies to eligible diagnostic work under agreed terms; parts and other services may be chargeable.
DIAGNOSTIC HISTORY
YOUR VEHICLE'S
HISTORY MATTERS.
A diagnostic report is part of your vehicle's story. With appropriate customer information and privacy safeguards, we can retain relevant diagnostic reports so future visits can be compared with earlier findings, helping identify recurring faults and patterns.With privacy safeguards in place, we can keep relevant diagnostic reports to help spot recurring faults on future visits.
We'll explain what records we retain, for how long, and your data rights before enabling any customer-history storage.
Get in Touch
YOUR VEHICLE.
OUR EXPERTISE.Send an enquiry
Tell us what is happening with your vehicle. Include the registration and a brief description of the problem so we can help efficiently.Send your registration, postcode and a brief description of the fault.
0735 40 50 60 5
info@mrdiag.co.uk
Serving Southampton and surrounding Hampshire areas.