Car Diagnostics in Bristol
When a warning light appears or your car starts behaving differently, the cause is not always obvious. Car diagnostics can help narrow down the problem, giving you a clearer idea of what needs attention before decisions are made about repairs.
At M & M Autos, we provide car diagnostics and fault finding from our Bristol garage. Whether you are dealing with an engine problem, an electronic fault or a coolant-related concern, we can investigate what is happening and determine the appropriate next step.
Head Gasket Repair & Replacement – UK Collection & Return
Vehicle Diagnostics & Fault Finding
Modern vehicles can develop faults for many different reasons, and similar symptoms do not necessarily have the same cause. That is why effective vehicle diagnostics should be about understanding the problem rather than simply making assumptions from the first symptom.
We combine diagnostic testing with hands-on mechanical knowledge to investigate faults and identify where further attention is required.
Once we have established what is happening, we can explain what has been found and discuss any further inspection or repair work needed.
Engine Diagnostic Testing
If your engine is not running as it normally does, there may be an underlying fault that needs investigation. You might notice a warning light, a change in performance or another difference that gives you reason to have the vehicle checked.
Our car diagnostic service can be used to investigate engine-related problems and help establish where the fault lies.
If the investigation identifies a mechanical issue, M & M Autos also carries out car repairs, servicing and engine timing work, allowing you to discuss the next stage with the same garage.

Electronic Faults & Warning Lights
A warning light tells you that something needs attention, but it does not necessarily tell you the underlying cause.
Rather than replacing components based on guesswork, diagnostic testing can help focus the investigation on the relevant area of the vehicle. We can then use what we find, together with further inspection where required, to build a clearer picture of the problem.
If a warning light has appeared and you are unsure what it means for your vehicle, contact us and tell us what you have noticed.
Coolant & Head Gasket Concerns
Coolant-related problems can require further investigation to establish what is actually happening. If you are concerned about a possible coolant fault or head gasket problem, bring the vehicle to us so the symptoms can be assessed.
We will not assume the cause simply from the symptoms you describe. The purpose of fault finding is to investigate the problem and determine what requires attention before repair work is discussed.
If you have noticed a coolant-related issue or have been told there may be a head gasket problem, speak to us about arranging an inspection.
Diagnostics Backed by Mechanical Experience
Diagnostic information is most useful when it can be considered alongside an understanding of how the vehicle and its mechanical systems work.
M & M Autos developed its hands-on experience by maintaining and repairing vehicles for our own car sales business before opening the garage to the public. That work gave us extensive familiarity with Ford vehicles and engines while developing our broader mechanical knowledge.
Today, we combine vehicle diagnostics with servicing, mechanical repairs and fault finding, as well as extensive work on wet belts, timing belts and timing chains.
That wider experience is particularly useful when a problem needs more than diagnostic testing alone.

From Diagnosis to Repair
Finding a fault is only useful if you understand what happens next. If our investigation identifies a problem that falls within the repairs we carry out, we can explain the work required and discuss it with you before proceeding.
Our wider garage services include work on brakes, clutches, exhausts, shocks, alternators and suspension, together with wet belt and engine timing work.
If the problem requires further investigation first, we can explain that too. The aim is to establish what is happening before deciding on the repair.

Car Diagnostics in Bristol & Surrounding Areas
M & M Autos provides car diagnostics for drivers throughout Bristol and surrounding areas, including Bath, Yate, Chipping Sodbury and Thornbury.
Whether you have an engine warning light, an electronic problem, a coolant concern or simply know that your car is not running as it normally does, you do not need to diagnose the fault yourself.
Book Your Car in for Diagnostic Testing
If your vehicle has developed a fault or warning light, contact M & M Autos to arrange car diagnostic testing at our Bristol garage.
Tell us what you have noticed, when the problem started and anything else that may help us understand the symptoms. We can then investigate the fault and discuss the appropriate next step.
