Built for UK Drivers
Uses UK terminology, MOT context and practical ownership guidance.
Professional UK vehicle diagnostic assistant
Understand your vehicle before replacing parts
Start with a symptom or dashboard warning light. AutoKnowledge Pro organises possible fault areas, driving urgency, MOT relevance and the checks that should happen before repair parts are authorised.
No Pretend Vehicle Scan
The app never claims to communicate with your ECU or inspect the vehicle remotely.
Practical Diagnostic Order
Results focus on evidence, safe next steps and testing before replacement.
Free to use, no account required and no customer or vehicle information requested.
Start your diagnosis
What information do you already have?
Choose the route that best matches what you know now. Start with a symptom when the cause is unclear, choose a dashboard warning light when a symbol is the main concern, or use the fault-code lookup when a scanner has already produced a code.
Recommended starting point
Check a Vehicle Symptom
Start with what the vehicle is doing. This route helps organise clutch problems, poor acceleration, starting faults, overheating, brake concerns and other common symptoms.
- Guided follow-up questions
- Possible fault areas
- Driving urgency
- UK MOT relevance
Safety and urgency
Check a Warning Light
Select the dashboard light you have seen and review its urgency, possible causes, driving advice, MOT implications and relevant Motor Vehicle Expert guidance.
- Red and amber urgency
- Stop-or-continue guidance
- Common fault areas
- Relevant specialist guides
Scanner code available
Look Up an OBD Fault Code
Already have a code such as P0299 or P0420? Open the existing Motor Vehicle Expert fault-code checker to review the code meaning, common causes and recommended diagnostic direction.
- Code meaning
- Common causes
- Diagnostic testing direction
- Published fault-code guides
Not sure which route to choose?
Start with the vehicle symptom checker when you do not have a fault code. Choose the warning-light checker when a dashboard symbol is the main concern. Use the fault-code lookup only when a scanner has already provided a code.
Start with evidence
Describe what the vehicle does before deciding which component may have failed.
Prioritise safety
Smoke, overheating, fluid loss, poor braking or unpredictable vehicle control may require stopping immediately.
Test before replacing
Symptoms, warning lights and fault codes provide direction; they do not automatically prove that a particular part has failed.
Optional vehicle information Add details to carry them into the diagnostic result and printable report.
Details remain in this browser session and are not sent to Motor Vehicle Expert.
Guided vehicle check
Vehicle symptom diagnosis
Step 1 of 4
Guided symptom diagnosis
Which vehicle system best matches the problem?
Choose the system most closely connected to the first symptom you noticed. Do not select a part simply because you suspect it may have failed.
Step 1 of 4
What area of the vehicle is causing concern?
Select one main category. Some systems provide a complete interactive pathway, while others direct you to the strongest supporting Motor Vehicle Expert guidance.
Choose the system linked to the first clear symptom
For example, engine revs rising without matching acceleration belongs under clutch and manual gearbox. An engine that cannot raise its revs smoothly belongs under engine and acceleration.
Step 2 of 4
What is the main clutch symptom?
Choose the symptom the driver notices first. Supporting signs such as heat, noise, judder and fluid loss can be added in the next step.
Choose one main symptom only
Select the behaviour that best describes the original concern. You will be able to add every other relevant sign during the conditions step.
Step 3 of 4
Which additional signs are present?
Select every statement that genuinely applies. These details help separate friction wear from hydraulic, cable, release-system, flywheel and engine-performance faults.
Select only signs you have genuinely observed
More selections do not create a better result. Accurate answers help the checker distinguish between clutch friction wear, hydraulic faults, release-system trouble and unrelated engine-performance problems.
Step 4 of 4
How is the vehicle behaving now?
Answer every question. These answers determine whether cautious driving may be reasonable or whether the vehicle should be stopped and recovered.
Safety answers take priority over the likely fault
Smoke, persistent overheating, hydraulic-fluid loss or unpredictable drive transfer can make recovery safer than continued driving.
Stop if the vehicle cannot transfer drive safely
Do not continue driving where there is smoke, severe clutch slip, sudden loss of drive, rapidly falling fluid level or unsafe gear selection.
Engine and acceleration diagnosis
What is the main engine or performance symptom?
Choose the first clear symptom you noticed. Supporting signs, operating conditions and safety concerns will be added during the following steps.
Step 2 of 4
What is the main engine or acceleration problem?
Select one main symptom only. Choose what the vehicle actually does rather than selecting the component you suspect has failed.
Choose the first clear symptom
Select the behaviour that best describes the original concern. Additional evidence such as uphill load, warning lights, smoke, temperature and recent repairs can be added in the next step.
Step 3 of 4
Which additional engine conditions are present?
Select every statement that genuinely applies. These details help separate airflow, boost, fuel-delivery, ignition, emissions, mechanical and drivetrain-related faults.
Select only evidence you have actually observed
Accurate conditions help the checker compare engine faults with clutch slip, transmission problems, cooling faults and other systems that can produce similar symptoms.
Step 4 of 4
How is the engine and vehicle behaving now?
Answer every question. These answers determine whether cautious driving may be reasonable or whether the engine should be switched off and the vehicle recovered.
Safety answers override the likely diagnostic direction
Oil-pressure warnings, overheating, heavy smoke, severe knocking and dangerously reduced power can require immediate action before any further testing or driving.
Stop the engine when serious warning signs are present
Do not continue driving with a red oil-pressure warning, severe overheating, heavy smoke, loud metallic knocking or power loss that makes normal traffic movement unsafe.
Battery, starting and charging diagnosis
What is the main starting or charging symptom?
Choose the first clear symptom, then add operating conditions and safety information.
Step 2 of 4
What is the main starting or charging symptom?
Select one main symptom only.
Step 3 of 4
Which additional conditions are present?
Select every statement that genuinely applies.
Step 4 of 4
What is the current safety condition?
Answer every question. Safety answers override the likely fault direction.
Cooling-system and overheating diagnosis
What is the main cooling-system symptom?
Choose the first clear symptom, then add operating conditions and safety information.
Step 2 of 4
What is the main cooling-system symptom?
Select one main symptom only.
Step 3 of 4
Which additional conditions are present?
Select every statement that genuinely applies.
Step 4 of 4
What is the current safety condition?
Answer every question. Safety answers override the likely fault direction.
Brake-system safety diagnosis
What is the main braking symptom?
Choose the first clear symptom, then add operating conditions and safety information.
Step 2 of 4
What is the main braking symptom?
Select one main symptom only.
Step 3 of 4
Which additional conditions are present?
Select every statement that genuinely applies.
Step 4 of 4
What is the current safety condition?
Answer every question. Safety answers override the likely fault direction.
Automatic Transmission diagnosis
What is the main automatic transmission symptom?
Choose the first clear symptom, then add conditions and safety information.
Step 2 of 4
What is the main symptom?
Select one main symptom only.
Step 3 of 4
Which additional conditions are present?
Select every statement that genuinely applies.
Step 4 of 4
What is the current safety condition?
Answer every question. Safety answers override fault ranking.
Exhaust and Emissions diagnosis
What is the main exhaust and emissions symptom?
Choose the first clear symptom, then add conditions and safety information.
Step 2 of 4
What is the main symptom?
Select one main symptom only.
Step 3 of 4
Which additional conditions are present?
Select every statement that genuinely applies.
Step 4 of 4
What is the current safety condition?
Answer every question. Safety answers override fault ranking.
Fuel System diagnosis
What is the main fuel system symptom?
Choose the first clear symptom, then add conditions and safety information.
Step 2 of 4
What is the main symptom?
Select one main symptom only.
Step 3 of 4
Which additional conditions are present?
Select every statement that genuinely applies.
Step 4 of 4
What is the current safety condition?
Answer every question. Safety answers override fault ranking.
Turbocharger and Boost diagnosis
What is the main turbocharger and boost symptom?
Choose the first clear symptom, then add conditions and safety information.
Step 2 of 4
What is the main symptom?
Select one main symptom only.
Step 3 of 4
Which additional conditions are present?
Select every statement that genuinely applies.
Step 4 of 4
What is the current safety condition?
Answer every question. Safety answers override fault ranking.
Electrical System diagnosis
What is the main electrical system symptom?
Choose the first clear symptom, then add conditions and safety information.
Step 2 of 4
What is the main symptom?
Select one main symptom only.
Step 3 of 4
Which additional conditions are present?
Select every statement that genuinely applies.
Step 4 of 4
What is the current safety condition?
Answer every question. Safety answers override fault ranking.
HVAC and Air Conditioning diagnosis
What is the main hvac and air conditioning symptom?
Choose the first clear symptom, then add conditions and safety information.
Step 2 of 4
What is the main symptom?
Select one main symptom only.
Step 3 of 4
Which additional conditions are present?
Select every statement that genuinely applies.
Step 4 of 4
What is the current safety condition?
Answer every question. Safety answers override fault ranking.
Tyres and Wheel Alignment diagnosis
What is the main tyres and wheel alignment symptom?
Choose the first clear symptom, then add conditions and safety information.
Step 2 of 4
What is the main symptom?
Select one main symptom only.
Step 3 of 4
Which additional conditions are present?
Select every statement that genuinely applies.
Step 4 of 4
What is the current safety condition?
Answer every question. Safety answers override fault ranking.
Steering and suspension diagnosis
What is the main steering or suspension symptom?
Select the first clear behaviour you noticed. Supporting conditions and immediate safety concerns follow.
Step 2 of 4
What is the main steering or suspension problem?
Choose one main symptom only.
Step 3 of 4
Which additional steering conditions are present?
Select every condition that genuinely applies.
Step 4 of 4
How safely can the vehicle be controlled?
Answer every question. Steering control and tyre condition take priority.
Stop where steering, wheel or tyre condition is unsafe
Do not continue with unpredictable steering, severe wheel movement, a damaged tyre or obvious loss of directional control.
Dashboard warning-light guidance
Which dashboard warning light is showing?
Select the main illuminated warning light. AutoKnowledge Pro will organise its urgency, possible fault areas, driving guidance, MOT relevance and supporting Motor Vehicle Expert resources.
Warning colour matters, but vehicle behaviour matters more
A red warning usually requires immediate attention. An amber warning normally means the fault should be investigated soon. Stop regardless of colour when braking, steering, overheating, smoke or fluid loss makes the vehicle unsafe.
Dashboard system
Select the main warning light
Choose one light only. When several warning lights appeared together, select the most safety-critical light first.
Select the most urgent warning first
Where several lights appear together, begin with oil pressure, coolant temperature, braking or another red safety warning. Multiple warnings can also share one electrical or communication fault.
Diagnostic guidance
Vehicle Diagnostic Result
Your selected symptoms and safety answers will be organised into a clear diagnostic direction.
Driving urgency
Review required
Diagnostic direction
Evidence-led investigation
The strongest diagnostic direction will appear here after the check is completed.
Driving guidance
Assess before continuing
Safe-driving guidance will appear here based on the selected symptom and safety answers.
UK MOT relevance
Physical assessment required
MOT relevance will appear here without presenting the app as a substitute for an official test.
Investigation areas
Possible Fault Areas
These are areas to investigate—not confirmed failed parts.
Testing order
Recommended Next Checks
Work through these checks before authorising replacement parts.
Repair planning estimate
Typical UK Repair Intelligence
Broad planning ranges only. Vehicle specification, region, parts quality and workshop rates can change the final quotation.
Evidence confidence—
Commonly associated repairs
Vehicle information used
No optional vehicle details supplied.
Confidence is an evidence-ranking estimate, not proof of component failure. Costs are broad UK planning estimates and should not replace a written quotation.
Continue the diagnosis
Related Motor Vehicle Expert Guides
Use the relevant full guides for detailed symptoms, diagnostic processes, repair considerations, MOT context and used-car buying risk.
Keep this guidance for your inspection
Print the result or save it as a PDF before speaking with a garage or inspecting the vehicle.
A structured diagnostic process
How AutoKnowledge Pro turns a symptom into sensible next steps
The application does not guess a failed part from one symptom. It organises what the driver noticed, the conditions surrounding the fault and the immediate safety risks before presenting a practical investigation order.
Observation
Start With the First Clear Symptom
Choose what the vehicle is actually doing: losing drive, overheating, failing to start, displaying a warning light, making a noise or behaving unpredictably.
- Focus on observed behaviour
- Avoid diagnosing a part too early
- Separate symptoms from assumptions
Conditions
Add When and How It Happens
Record whether the problem is worse when hot, under load, uphill, in higher gears, during starting, while braking or directly after recent repair work.
- Cold, hot or intermittent
- Light load or heavy load
- Sudden, gradual or post-repair
Safety
Assess Whether Driving Should Continue
Smoke, overheating, brake-performance loss, falling fluid level, unstable steering or unpredictable drive transfer can make recovery safer than continued driving.
- Driving urgency
- Stop-or-continue guidance
- Breakdown and recovery risk
Direction
Review the Diagnostic Testing Order
The result highlights possible fault areas, checks that should happen next, UK MOT relevance and detailed Motor Vehicle Expert guides for continuing the investigation.
- Possible fault areas
- Recommended checks
- Supporting technical guides
Diagnostic order matters
Evidence should narrow the fault before parts are replaced
A warning light, fault code or symptom identifies an area that requires investigation. It does not automatically prove that the component named in a code description has failed.
A sensible diagnosis compares the driver's description with physical condition, fluid levels, wiring, live data, measurements and component operation where appropriate.
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Confirm the symptom
Reproduce or verify the behaviour before deciding which system is responsible.
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Check the basics
Inspect fluid levels, visible damage, loose connections, obvious leaks and recent repair history where safe.
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Measure before condemning
Use appropriate mechanical, electrical or scan-data tests to confirm whether the suspected system can operate correctly.
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Authorise the repair
Replace parts only after the evidence supports the repair and connected causes have been considered.
Complete interactive pathway
Diagnose clutch symptoms through the complete torque path
The clutch checker is AutoKnowledge Pro’s most detailed interactive route. It compares the main symptom with load, heat, pedal behaviour, hydraulic-fluid loss, noise, judder and recent repair history before presenting diagnostic direction.
This helps separate worn friction components from hydraulic faults, release-system problems, flywheel concerns, installation issues and engine-performance symptoms that can feel similar from the driver’s seat.
Eight main clutch symptoms, twelve supporting conditions and four safety questions are organised into one guided route.
Friction and Torque Transfer
Compare genuine rev flare, high-gear slip, weak acceleration, burning smells and load-related loss of drive.
Pedal and Hydraulic Operation
Review pedal pressure, slow return, a pedal that remains down, falling fluid level and possible master- or slave-cylinder faults.
Noise and Release Components
Compare release-bearing noise, fork or pivot movement, pressure plate operation and gearbox-input noises that change with pedal load.
Judder and Flywheel Behaviour
Consider friction-surface contamination, dual-mass flywheel condition, engine mounts and uneven clutch engagement.
Problems After Replacement
Prioritise installation, bleeding, contamination, flywheel condition, part compatibility and unresolved connected faults.
Driving and Breakdown Risk
Smoke, severe slip, sudden loss of drive, hydraulic-fluid loss or unsafe gear selection can make recovery the safer option.
Current diagnostic coverage
Choose the level of guidance available for each system
AutoKnowledge Pro provides complete four-step diagnostic pathways across thirteen major vehicle systems, plus a dedicated dashboard warning-light checker and direct links to Motor Vehicle Expert technical guidance. Each route uses symptom, condition and safety evidence before presenting diagnostic and repair-planning direction.
Complete interactive pathway
Clutch and Manual Gearbox
Full four-step symptom, condition and safety pathway with symptom-specific diagnostic results.
- Eight main clutch symptoms
- Twelve supporting conditions
- Four safety and urgency questions
- Live clutch-cluster guide links
Complete interactive pathway
Engine and Acceleration
Provides a safe diagnostic starting point for poor acceleration, hesitation, stuttering, smoke and power loss.
- Engine versus drivetrain direction
- Load and warning-light context
- Driving-urgency guidance
- Motor Vehicle Expert diagnostic links
Complete interactive pathway
Battery and Starting
Organises no-crank, slow-crank, repeated-clicking and charging concerns before battery or starter replacement.
- Battery condition direction
- Starter and circuit checks
- Charging-system relevance
- Breakdown-risk guidance
Complete safety-priority pathway
Cooling and Overheating
Prioritises stopping safely where temperature, steam, coolant loss or repeated overheating risks severe engine damage.
- Stop-or-continue direction
- Coolant-loss warnings
- Cooling-system investigation
- Overheating guide links
Complete safety-priority pathway
Braking System
Provides safety-first direction for abnormal pedal feel, reduced braking, binding, vibration, pulling and brake warnings.
- Pedal and braking-performance risk
- Brake warning-light route
- MOT relevance
- Specialist braking guides
Interactive checker
Dashboard Warning Lights
Covers ten common red and amber warning lights with urgency, driving advice, MOT context and relevant published guides.
- Oil pressure and temperature
- Brakes, ABS and airbags
- Engine, charging and DPF
- Tyre pressure and stability control
Complete interactive pathway
Steering and Suspension
Directs users to symptom-led guidance for pulling, knocking, unstable handling, vibration and uneven tyre wear.
- Steering-pull diagnosis
- Alignment and tyre checks
- Suspension-noise guidance
- Safety and MOT context
Complete interactive pathway
Exhaust and Emissions
Connects leaks, smoke, fumes, DPF warnings and emissions concerns with diagnostic and MOT guidance.
- Exhaust-leak direction
- Smoke and emissions guidance
- DPF warning-light checker
- MOT emissions relevance
Complete interactive pathway
Automatic Transmission
Delayed engagement, slipping, harsh shifts, shudder, leaks, limp mode and warning messages.
- Eight transmission symptoms
- Cold, hot and load evidence
- Drive-loss safety logic
- Repair and labour planning
Complete interactive pathway
Fuel System
Fuel smell, leakage, hard starting, starvation, stalling, injector concerns and contaminated fuel.
- Eight fuel-system symptoms
- Leak and fire-risk overrides
- Pressure and contamination direction
- UK repair estimates
Complete interactive pathway
Turbocharger and Boost
Underboost, overboost, whistle, smoke, oil in boost pipes, rattles and intermittent limp mode.
- Eight boost symptoms
- Smoke and oil-loss overrides
- P0299 and P0234 guidance
- Turbo repair planning
Complete interactive pathway
Electrical System
Intermittent circuits, blown fuses, dim lights, battery drain, burning smells and communication faults.
- Eight electrical symptoms
- Smoke and cut-out overrides
- Voltage and circuit testing order
- Diagnostic cost planning
Complete interactive pathway
HVAC and Air Conditioning
No cooling, weak airflow, heater faults, smells, noises, demisting problems and cabin water leaks.
- Eight HVAC symptoms
- Visibility and fume safety logic
- Cooling and airflow checks
- Repair and regas estimates
Complete interactive pathway
Tyres and Wheel Alignment
Pressure loss, vibration, pulling, off-centre steering, abnormal wear and TPMS warnings.
- Eight tyre and geometry symptoms
- Damage and pressure-loss overrides
- Balance versus alignment direction
- MOT and replacement planning
Specialist guidance
MOT Questions
Separates mechanical urgency from what the UK MOT directly inspects, including warning lights, emissions and safety defects.
- What the MOT checks
- Warning-light relevance
- Common failure reasons
- Pre-test preparation
Safety before diagnosis
Know when to stop, recover or arrange urgent inspection
Diagnostic information is useful only when the vehicle can be assessed safely. Smoke, overheating, reduced braking, fluid loss, unstable steering or unpredictable power transfer may require the journey to end before further checks are attempted.
Stop and recover
Do Not Continue Driving
Stop somewhere safe, switch off where appropriate and arrange professional assistance when any of the following applies.
- Oil-pressure warning remains illuminated
- Engine temperature is excessive or steam is visible
- Braking performance or brake-pedal feel is unsafe
- Steering control is unstable or unpredictable
- Smoke, severe burning or active fluid loss is present
- The clutch slips severely or drive is being lost
Recovery may prevent further damage
Continuing to drive can turn a repairable fault into engine, transmission, brake or tyre damage—and may leave the vehicle stranded in a less safe location.
Urgent inspection
Arrange Diagnosis Promptly
Limit unnecessary journeys and arrange inspection soon where the vehicle remains controllable but the fault is worsening or could lead to breakdown.
- Clutch slip is increasing under load
- An amber warning light remains illuminated
- Starting is intermittent or cranking is becoming slower
- Coolant, oil or hydraulic fluid requires repeated topping up
- Brakes bind, overheat, pull or vibrate noticeably
- A fault began immediately after recent repair work
Avoid heavy load and demanding journeys
Motorway driving, towing, steep hills, repeated stop-start traffic and long journeys can place greater stress on a system that is already showing signs of failure.
Monitor and investigate
Plan a Routine Inspection
A lower-risk symptom may allow cautious short-term use where the vehicle remains predictable and no warning signs suggest an immediate safety or breakdown risk.
- The symptom is mild and has not worsened
- No red warning light is illuminated
- Fluid levels remain stable
- Braking and steering remain normal
- There is no smoke, overheating or strong burning smell
- The vehicle accelerates and selects gears predictably
Monitoring is not the same as ignoring
Record when the symptom happens, whether it changes with heat or load and whether new warning lights, noises or fluid loss appear.
UK MOT context
A mechanical problem and an MOT failure are not always the same
The MOT checks prescribed roadworthiness, safety and environmental items at the time of the test. It is not a complete mechanical diagnosis, service inspection or guarantee that every major component is healthy.
Direct test relevance
Defects the MOT May Assess Directly
Some symptoms relate directly to items included in the test and may lead to a defect classification when present during the MOT.
- Braking-system condition and performance
- Steering, suspension and tyre defects
- Required warning-light operation
- Exhaust security, leaks and emissions
- Visibility, lamps and electrical safety items
- Structural corrosion in prescribed areas
Indirect relevance
Mechanical Faults That May Affect Testable Items
A fault may not be assessed as a standalone component but can create another condition that is included in the MOT inspection.
- Engine faults causing excessive emissions
- Fluid leaks contaminating brakes or tyres
- Drivetrain damage affecting secure operation
- Electrical faults illuminating required warning lights
- Mounting faults causing unsafe movement or contact
- Cooling faults producing steam or serious leakage
Important limitation
An MOT Pass Does Not Confirm Mechanical Health
A vehicle can pass its MOT while still having costly clutch, gearbox, engine, cooling, battery, charging or future maintenance problems that fall outside the test scope.
- Clutch friction wear may not cause an MOT failure
- A gearbox may operate poorly but pass the test
- Service history is not assessed
- Internal engine condition is not fully inspected
- Future repair cost is not predicted
- A pass reflects the test date—not long-term reliability
Use both forms of evidence
Combine MOT history with a mechanical inspection
MOT records can reveal recurring advisories, corrosion, tyre, braking, suspension, emissions and warning-light patterns. They should be considered alongside service history, diagnostic findings and a physical inspection.
Clear diagnostic boundaries
What AutoKnowledge Pro can—and cannot—tell you
AutoKnowledge Pro provides structured diagnostic direction from the symptoms, warning lights and safety information selected by the user. It cannot physically inspect the vehicle or confirm that one component has failed.
The result should be used to organise the next inspection, explain the concern more clearly and reduce premature parts replacement—not to replace appropriate mechanical or electrical testing.
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It does not communicate with the vehicle
The application cannot connect to an ECU, read live data, retrieve fault codes or operate vehicle systems remotely.
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It cannot inspect physical condition
Wear, leakage, corrosion, contamination, wiring damage and mechanical movement require visual or hands-on inspection.
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It cannot perform measurements
Pressure, voltage, resistance, temperature, wheel movement, emissions and component output require suitable test equipment.
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It cannot guarantee safe driving
Vehicle condition can change quickly. The driver remains responsible for stopping when the vehicle behaves unsafely.
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It cannot predict an MOT result
Only an authorised MOT test can determine the official result and defect classification on the day of inspection.
Why trust the guidance?
Built around practical fault finding—not automatic parts verdicts
AutoKnowledge Pro is designed as an educational diagnostic assistant within the Motor Vehicle Expert ecosystem. Its purpose is to improve diagnostic order, safety awareness and communication before repair decisions are made.
Symptom-Led Structure
The checker begins with what the vehicle does rather than asking the user to choose a component they already suspect.
Safety Comes First
Smoke, overheating, reduced braking, fluid loss and unpredictable vehicle control take priority over identifying a likely repair.
Testing Before Replacement
Possible fault areas are presented as investigation targets—not proof that the named part should be replaced.
UK and MOT Context
Guidance uses UK terminology and separates mechanical urgency from what is directly assessed during an MOT test.
Clear Limitations
The application does not pretend to scan the vehicle, inspect components or guarantee a diagnosis from user selections.
Supporting Technical Guides
Diagnostic results connect users with detailed Motor Vehicle Expert pages covering symptoms, checks, costs, MOT relevance and buying risk.
Continue your investigation
Explore the Motor Vehicle Expert knowledge centre
Use these live resources to continue from the interactive checker into detailed diagnostic, warning-light, fault-code and MOT guidance.
Symptom guidance
Vehicle Diagnostics Hub
Investigate acceleration, starting, vibration, overheating, clutch, steering and other vehicle symptoms.
Explore diagnostics Dashboard symbols Warning Lights GuideUnderstand common dashboard warnings, colour urgency, likely causes, driving advice and MOT relevance.
Explore warning lights OBD information Fault-Code CheckerLook up an existing OBD code and review its meaning, common causes and sensible diagnostic direction.
Look up a fault code Complete symptom cluster Clutch and Drivetrain HubCompare clutch slip, burning smells, bite-point changes, pedal faults, clutch noise and post-replacement problems.
Explore clutch guidance UK test guidance What Does the MOT Check?Understand the MOT inspection scope, warning-light relevance, safety defects and what falls outside the test.
Explore MOT guidance Ownership knowledge Vehicle GuidesExplore repair information, servicing guidance, component explanations and practical UK ownership advice.
Browse vehicle guides
Ready to begin?
Start with the symptom—not the repair part
Use AutoKnowledge Pro to organise what the vehicle is doing, check the immediate safety risk and prepare a logical next step.