{"source":"DVSA anonymised MOT testing data (Great Britain), 2024, joined against the DVSA's separate reason-for-rejection extract","license":"Original DVSA data is Open Government Licence v3.0. This derived export is free to reuse for any purpose; a credit and link to https://www.salvageprophet.co.uk/open-data is appreciated but not required.","methodology":"Every distinct defect description that actually failed a test nationally in the 2024 join (DVSA's own rfr_type_code = Fail, excluding Advisory, Minor and rectified-on-the-spot citations of the same defect), ranked by raw flagged-item count. This is a rate per 100 tests analysed, not a share of cars with at least one such fault: a single test can flag the same defect description more than once (for example, more than one tyre below the tread limit). nationalDangerousMarkPct is the share of every flagged item nationally, every severity included, that DVSA's own tester marked \"dangerous\".","generated":"2026-08-17","testsAnalysed":54086786,"nationalDangerousMarkPct":4.97,"rowCount":527,"rows":[{"description":"A suspension pin, bush or joint excessively worn","flaggedCount":1995317,"percentOfTests":3.69,"testsAnalysed":54086786},{"description":"Tyre tread depth not in accordance with the requirements","flaggedCount":1249535,"percentOfTests":2.31,"testsAnalysed":54086786},{"description":"A tyre seriously damaged","flaggedCount":1088821,"percentOfTests":2.01,"testsAnalysed":54086786},{"description":"The aim of a headlamp is not within limits laid down in the requirements","flaggedCount":952430,"percentOfTests":1.76,"testsAnalysed":54086786},{"description":"A spring or spring component fractured or seriously weakened","flaggedCount":891118,"percentOfTests":1.65,"testsAnalysed":54086786},{"description":"A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning","flaggedCount":881968,"percentOfTests":1.63,"testsAnalysed":54086786},{"description":"a brake lining or pad worn below 1.5mm","flaggedCount":832151,"percentOfTests":1.54,"testsAnalysed":54086786},{"description":"Wiper blade missing or obviously not clearing the windscreen","flaggedCount":742943,"percentOfTests":1.37,"testsAnalysed":54086786},{"description":"A suspension joint dust cover missing or no longer prevents the ingress of dirt etc","flaggedCount":727753,"percentOfTests":1.35,"testsAnalysed":54086786},{"description":"Windscreen washers not working or not providing sufficient fluid to clear the windscreen","flaggedCount":667518,"percentOfTests":1.23,"testsAnalysed":54086786},{"description":"A tyre cords visible or damaged","flaggedCount":655375,"percentOfTests":1.21,"testsAnalysed":54086786},{"description":"A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc","flaggedCount":605901,"percentOfTests":1.12,"testsAnalysed":54086786},{"description":"Stop lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning","flaggedCount":530075,"percentOfTests":0.98,"testsAnalysed":54086786},{"description":"Parking brake efficiency below minimum requirement","flaggedCount":527921,"percentOfTests":0.98,"testsAnalysed":54086786},{"description":"A steering ball joint with excessive wear or free play","flaggedCount":512312,"percentOfTests":0.95,"testsAnalysed":54086786},{"description":"Engine MIL illuminated indicating a malfunction","flaggedCount":501806,"percentOfTests":0.93,"testsAnalysed":54086786},{"description":"A headlamp or light source missing, inoperative or more than ½ not functioning in the case of LED","flaggedCount":484646,"percentOfTests":0.9,"testsAnalysed":54086786},{"description":"The strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is significantly reduced or inadequately repaired","flaggedCount":449078,"percentOfTests":0.83,"testsAnalysed":54086786},{"description":"Brake pipe damaged or excessively corroded","flaggedCount":446620,"percentOfTests":0.83,"testsAnalysed":54086786},{"description":"Significant brake effort recorded with no brake applied indicating a binding brake","flaggedCount":414094,"percentOfTests":0.77,"testsAnalysed":54086786},{"description":"Exhaust system leaking or insecure","flaggedCount":410668,"percentOfTests":0.76,"testsAnalysed":54086786},{"description":"A shock absorber damaged to the extent that it does not function or showing signs of severe leakage","flaggedCount":376960,"percentOfTests":0.7,"testsAnalysed":54086786},{"description":"A rear registration plate lamp or light source missing or  inoperative  in the case of a single lamp or all lamps","flaggedCount":350511,"percentOfTests":0.65,"testsAnalysed":54086786},{"description":"Brake disc or drum significantly and obviously worn","flaggedCount":312801,"percentOfTests":0.58,"testsAnalysed":54086786},{"description":"Steering rack gaiter or ball joint dust cover missing or no longer prevents the ingress of dirt etc","flaggedCount":298916,"percentOfTests":0.55,"testsAnalysed":54086786},{"description":"A direction indicator lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning","flaggedCount":264315,"percentOfTests":0.49,"testsAnalysed":54086786},{"description":"Parking brake inoperative on one side","flaggedCount":242181,"percentOfTests":0.45,"testsAnalysed":54086786},{"description":"Lamp emitted colour, position or intensity not in accordance with the requirements","flaggedCount":235971,"percentOfTests":0.44,"testsAnalysed":54086786},{"description":"Brakes imbalance across an axle such that the braking effort from any wheel is less than 70% of the maximum effort recorded from the other wheel on the same axle.","flaggedCount":215087,"percentOfTests":0.4,"testsAnalysed":54086786},{"description":"Lambda coefficient outside the default limits or the range specified by the manufacturer","flaggedCount":214021,"percentOfTests":0.4,"testsAnalysed":54086786},{"description":"Vehicle structure corroded to the extent that the rigidity of the assembly is seriously reduced","flaggedCount":196638,"percentOfTests":0.36,"testsAnalysed":54086786},{"description":"An obligatory rear fog lamp missing, or a front or rear fog lamp inoperative or in the case of a multiple light source more than 1/2 not functioning","flaggedCount":182564,"percentOfTests":0.34,"testsAnalysed":54086786},{"description":"Emissions test unable to be completed","flaggedCount":170410,"percentOfTests":0.32,"testsAnalysed":54086786},{"description":"An SRS malfunction indicator lamp (MIL) indicates a system malfunction","flaggedCount":167450,"percentOfTests":0.31,"testsAnalysed":54086786},{"description":"Warning device shows system malfunction","flaggedCount":166441,"percentOfTests":0.31,"testsAnalysed":54086786},{"description":"Emissions levels exceed default limits","flaggedCount":158024,"percentOfTests":0.29,"testsAnalysed":54086786},{"description":"Parking brake efficiency less than 50% of the required value","flaggedCount":150169,"percentOfTests":0.28,"testsAnalysed":54086786},{"description":"Excessive fluctuation in brake effort through each wheel revolution.","flaggedCount":146760,"percentOfTests":0.27,"testsAnalysed":54086786},{"description":"A suspension component excessively damaged or corroded","flaggedCount":145331,"percentOfTests":0.27,"testsAnalysed":54086786},{"description":"A wheel with a loose or missing wheel nut, bolt or stud","flaggedCount":126227,"percentOfTests":0.23,"testsAnalysed":54086786},{"description":"The strength or continuity of the load bearing structure within 30cm of any seat belt anchorage (a 'prescribed area') is significantly reduced or inadequately repaired","flaggedCount":124507,"percentOfTests":0.23,"testsAnalysed":54086786},{"description":"Brake disc or drum excessively weakened, insecure or fractured","flaggedCount":123295,"percentOfTests":0.23,"testsAnalysed":54086786},{"description":"A wheel bearing excessively rough","flaggedCount":122961,"percentOfTests":0.23,"testsAnalysed":54086786},{"description":"Emissions levels exceed the manufacturer's specified limits","flaggedCount":118860,"percentOfTests":0.22,"testsAnalysed":54086786},{"description":"Audible warning inoperative","flaggedCount":114607,"percentOfTests":0.21,"testsAnalysed":54086786},{"description":"Headlamp aim unable to be tested","flaggedCount":113727,"percentOfTests":0.21,"testsAnalysed":54086786},{"description":"Smoke opacity levels exceed the manufacturer's specified limit","flaggedCount":108737,"percentOfTests":0.2,"testsAnalysed":54086786},{"description":"Body, cab or chassis excessively corroded at a mounting point","flaggedCount":108473,"percentOfTests":0.2,"testsAnalysed":54086786},{"description":"A tyre pressure monitoring system malfunctioning or obviously inoperative","flaggedCount":103637,"percentOfTests":0.19,"testsAnalysed":54086786},{"description":"A suspension pin, bush or joint likely to become detached","flaggedCount":94438,"percentOfTests":0.17,"testsAnalysed":54086786},{"description":"Service brake efficiency below minimum requirement","flaggedCount":91617,"percentOfTests":0.17,"testsAnalysed":54086786},{"description":"Number plate does not conform to the specified requirements","flaggedCount":87821,"percentOfTests":0.16,"testsAnalysed":54086786},{"description":"Headlamp reflector or lens seriously defective or missing","flaggedCount":86134,"percentOfTests":0.16,"testsAnalysed":54086786},{"description":"Product on the lens or light source which obviously reduces light intensity or changes emitted colour to other than white or yellow","flaggedCount":82848,"percentOfTests":0.15,"testsAnalysed":54086786},{"description":"Parking brake lever has excessive movement indicating incorrect adjustment","flaggedCount":80549,"percentOfTests":0.15,"testsAnalysed":54086786},{"description":"ESC MIL indicates a system malfunction","flaggedCount":79463,"percentOfTests":0.15,"testsAnalysed":54086786},{"description":"Brake lining or pad worn down to wear indicator","flaggedCount":78100,"percentOfTests":0.14,"testsAnalysed":54086786},{"description":"A shock absorber bush excessively worn","flaggedCount":77257,"percentOfTests":0.14,"testsAnalysed":54086786},{"description":"A tyre has a lump, bulge or tear caused by separation or partial failure of its structure. This includes any lifting of the tread rubber","flaggedCount":75643,"percentOfTests":0.14,"testsAnalysed":54086786},{"description":"A door will not open using the relevant control or close properly","flaggedCount":73817,"percentOfTests":0.14,"testsAnalysed":54086786},{"description":"A wheel bearing with excessive play","flaggedCount":72617,"percentOfTests":0.13,"testsAnalysed":54086786},{"description":"An induction or exhaust leak that could affect emissions levels","flaggedCount":72499,"percentOfTests":0.13,"testsAnalysed":54086786},{"description":"Brake performance unable to be tested","flaggedCount":70234,"percentOfTests":0.13,"testsAnalysed":54086786},{"description":"Lamp not securely attached","flaggedCount":66066,"percentOfTests":0.12,"testsAnalysed":54086786},{"description":"Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users","flaggedCount":64983,"percentOfTests":0.12,"testsAnalysed":54086786},{"description":"Seat belt buckle missing, damaged or not functioning as intended","flaggedCount":58944,"percentOfTests":0.11,"testsAnalysed":54086786},{"description":"A brake hose ferrule excessively corroded","flaggedCount":58835,"percentOfTests":0.11,"testsAnalysed":54086786},{"description":"A stub axle swivel pin and/or bush excessively worn","flaggedCount":58324,"percentOfTests":0.11,"testsAnalysed":54086786},{"description":"Headlamp levelling device inoperative","flaggedCount":55474,"percentOfTests":0.1,"testsAnalysed":54086786},{"description":"A shock absorber which has negligible damping effect","flaggedCount":53971,"percentOfTests":0.1,"testsAnalysed":54086786},{"description":"Headlamp emitted colour, position or intensity not in accordance with the requirements","flaggedCount":52602,"percentOfTests":0.1,"testsAnalysed":54086786},{"description":"A body panel or body component damaged or corroded and likely to cause injury when grazed or contacted, or insecure","flaggedCount":52458,"percentOfTests":0.1,"testsAnalysed":54086786},{"description":"Number plate inscription missing or illegible","flaggedCount":52267,"percentOfTests":0.1,"testsAnalysed":54086786},{"description":"Fuel system leaking, or missing or ineffective filler cap","flaggedCount":51172,"percentOfTests":0.09,"testsAnalysed":54086786},{"description":"Tyres on the same axle or on twin wheels are different sizes","flaggedCount":48168,"percentOfTests":0.09,"testsAnalysed":54086786},{"description":"Rear registration plate lamp does not illuminate simultaneously with the position lamps","flaggedCount":47044,"percentOfTests":0.09,"testsAnalysed":54086786},{"description":"A service brake control has insufficient reserve travel","flaggedCount":46578,"percentOfTests":0.09,"testsAnalysed":54086786},{"description":"A reversing lamp inoperative","flaggedCount":44426,"percentOfTests":0.08,"testsAnalysed":54086786},{"description":"A suspension component fractured or likely to fail","flaggedCount":43281,"percentOfTests":0.08,"testsAnalysed":54086786},{"description":"Abnormal lag in brake operation on a wheel","flaggedCount":42399,"percentOfTests":0.08,"testsAnalysed":54086786},{"description":"Obligatory mirror or device inoperative, excessively damaged or insecure","flaggedCount":42357,"percentOfTests":0.08,"testsAnalysed":54086786},{"description":"Leaking brake pipe or connection on a hydraulic system","flaggedCount":42048,"percentOfTests":0.08,"testsAnalysed":54086786},{"description":"A suspension pin, bush, joint or bearing excessively worn","flaggedCount":40568,"percentOfTests":0.08,"testsAnalysed":54086786},{"description":"A flexible brake hose excessively damaged, deteriorated, chafed, twisted or stretched","flaggedCount":40075,"percentOfTests":0.07,"testsAnalysed":54086786},{"description":"Bumper insecure or with damage likely to cause injury when grazed or contacted","flaggedCount":36436,"percentOfTests":0.07,"testsAnalysed":54086786},{"description":"A suspension component missing, likely to become detached or directional stability impaired","flaggedCount":34358,"percentOfTests":0.06,"testsAnalysed":54086786},{"description":"Smoke opacity levels exceed default limit","flaggedCount":34050,"percentOfTests":0.06,"testsAnalysed":54086786},{"description":"Stop lamps all missing or inoperative","flaggedCount":33893,"percentOfTests":0.06,"testsAnalysed":54086786},{"description":"A steering ball joint worn to the extent there is a serious risk of detachment","flaggedCount":32242,"percentOfTests":0.06,"testsAnalysed":54086786},{"description":"A battery insecure and likely to fall from carrier or cause a short circuit","flaggedCount":32198,"percentOfTests":0.06,"testsAnalysed":54086786},{"description":"Seat belt not functioning as intended or of an incorrect type","flaggedCount":32128,"percentOfTests":0.06,"testsAnalysed":54086786},{"description":"A position lamp adversely affected by the operation of any other lamp","flaggedCount":30609,"percentOfTests":0.06,"testsAnalysed":54086786},{"description":"Power steering fluid leaking or system malfunctioning","flaggedCount":30213,"percentOfTests":0.06,"testsAnalysed":54086786},{"description":"Lamp showing red light to the front, white light to the rear or has heavily reduced light intensity","flaggedCount":28800,"percentOfTests":0.05,"testsAnalysed":54086786},{"description":"Brakes imbalance across an axle such that the braking effort from any wheel is less than 50% of the maximum effort recorded from the other wheel on a steered axle","flaggedCount":28729,"percentOfTests":0.05,"testsAnalysed":54086786},{"description":"An obstruction significantly affecting the driver's view of the road through the swept area of the windscreen or an obligatory external mirror not visible","flaggedCount":28416,"percentOfTests":0.05,"testsAnalysed":54086786},{"description":"Flexible brake hose excessively damaged, chafed, twisted or stretched","flaggedCount":28061,"percentOfTests":0.05,"testsAnalysed":54086786},{"description":"A suspension component insecurely attached to chassis or axle","flaggedCount":26636,"percentOfTests":0.05,"testsAnalysed":54086786},{"description":"Actuator leaking and braking performance not affected","flaggedCount":26098,"percentOfTests":0.05,"testsAnalysed":54086786},{"description":"Windscreen or window damaged or seriously discoloured and affecting the driver's view of the road or of an obligatory external mirror","flaggedCount":25921,"percentOfTests":0.05,"testsAnalysed":54086786},{"description":"Fuel system leaking excessively or a risk of fire","flaggedCount":25777,"percentOfTests":0.05,"testsAnalysed":54086786},{"description":"Light source and lamp not compatible","flaggedCount":25652,"percentOfTests":0.05,"testsAnalysed":54086786},{"description":"A tyre not fitted in compliance with the manufacturers sidewall instruction","flaggedCount":25550,"percentOfTests":0.05,"testsAnalysed":54086786},{"description":"Any fracture or welding defect on a wheel","flaggedCount":25277,"percentOfTests":0.05,"testsAnalysed":54086786},{"description":"Wiper not operating or missing","flaggedCount":24669,"percentOfTests":0.05,"testsAnalysed":54086786},{"description":"Brake pedal anti-slip provision missing, loose or worn smooth","flaggedCount":24537,"percentOfTests":0.05,"testsAnalysed":54086786},{"description":"Indicator or hazard warning switch inoperative","flaggedCount":23384,"percentOfTests":0.04,"testsAnalysed":54086786},{"description":"Braking effort inadequate at a wheel","flaggedCount":20823,"percentOfTests":0.04,"testsAnalysed":54086786},{"description":"Reflector missing or reflecting white to the rear","flaggedCount":19916,"percentOfTests":0.04,"testsAnalysed":54086786},{"description":"The strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is so weakened that control of the vehicle is likely to be adversely affected","flaggedCount":19899,"percentOfTests":0.04,"testsAnalysed":54086786},{"description":"Braking effort inadequate at any wheel","flaggedCount":19404,"percentOfTests":0.04,"testsAnalysed":54086786},{"description":"A stop lamp adversely affected by the operation of another lamp","flaggedCount":19389,"percentOfTests":0.04,"testsAnalysed":54086786},{"description":"A bonnet that cannot be safely secured in the closed position","flaggedCount":18943,"percentOfTests":0.04,"testsAnalysed":54086786},{"description":"Front or rear fog lamp emitted colour, position or intensity not in accordance with the requirements","flaggedCount":18205,"percentOfTests":0.03,"testsAnalysed":54086786},{"description":"Braking effort not recording at a wheel","flaggedCount":18141,"percentOfTests":0.03,"testsAnalysed":54086786},{"description":"Number plate missing or so insecure that it is likely to fall off","flaggedCount":17912,"percentOfTests":0.03,"testsAnalysed":54086786},{"description":"Emissions test not completed because smoke levels are significantly in excess of the specified limit values","flaggedCount":16978,"percentOfTests":0.03,"testsAnalysed":54086786},{"description":"Service brake pedal has insufficient reserve travel","flaggedCount":16537,"percentOfTests":0.03,"testsAnalysed":54086786},{"description":"Any part of the noise suppression system insecure","flaggedCount":16332,"percentOfTests":0.03,"testsAnalysed":54086786},{"description":"Free play in the steering, measured at the rim of the steering wheel is excessive","flaggedCount":15828,"percentOfTests":0.03,"testsAnalysed":54086786},{"description":"A wheel badly distorted or wear between wheel and hub at spigot mounting","flaggedCount":15632,"percentOfTests":0.03,"testsAnalysed":54086786},{"description":"A lens defective such that the emitted light is adversely affected","flaggedCount":15587,"percentOfTests":0.03,"testsAnalysed":54086786},{"description":"Seat belt retractor not functioning as intended","flaggedCount":15046,"percentOfTests":0.03,"testsAnalysed":54086786},{"description":"A stop lamp not showing a steady red light or has significantly reduced light intensity","flaggedCount":14547,"percentOfTests":0.03,"testsAnalysed":54086786},{"description":"Parking brake control missing, defective or inoperative","flaggedCount":14448,"percentOfTests":0.03,"testsAnalysed":54086786},{"description":"Cable damaged or knotted","flaggedCount":14049,"percentOfTests":0.03,"testsAnalysed":54086786},{"description":"An engine mounting/bracket severely damaged or deteriorated resulting in excessive movement","flaggedCount":13247,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"A direction indicator adversely affected by the operation of another lamp","flaggedCount":13236,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"A headlamp cleaning device inoperative in the case of LED or gas discharge systems (HID)","flaggedCount":13099,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"A seat belt webbing or flexible stalk significantly stretched or weakened","flaggedCount":12938,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"Emission control equipment fitted by the manufacturer missing, obviously modified or obviously defective","flaggedCount":12266,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"Fire risk due to fuel tank shield or exhaust shield missing where fitted as original equipment","flaggedCount":12195,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"Obligatory mirror or device missing","flaggedCount":12020,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"A transmission joint, belt or chain excessively worn","flaggedCount":11777,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"Front or rear fog lamp switch inoperative or not operating in accordance with the requirements","flaggedCount":11627,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"A tyre valve seriously damaged or misaligned likely to cause sudden deflation of the tyre","flaggedCount":11358,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"A transmission shaft bearing excessively worn","flaggedCount":11269,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"A wheel bearing play so excessive it is likely to break up or directional control impaired","flaggedCount":11045,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"Restriction in free movement of the braking system","flaggedCount":10911,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"Reflector defective or damaged by more than 50% of the reflecting surface","flaggedCount":10883,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"A tyre fouling a part of the vehicle","flaggedCount":10723,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"A seat belt or flexible stalk damaged","flaggedCount":10374,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"Brake hoses or connections leaking on hydraulic systems","flaggedCount":10321,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"Contaminated with oil, grease etc","flaggedCount":10221,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"Exhaust on a vehicle fitted with a diesel particulate filter emits visible smoke of any colour","flaggedCount":10172,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"Brake lining or pad missing or incorrectly mounted","flaggedCount":10167,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"A mandatory tell-tale for main beam headlamp or rear fog lamp missing or inoperative","flaggedCount":10017,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"Brake pipe is at imminent risk of failure or fracture","flaggedCount":9840,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"A brake on any wheel grabbing severely","flaggedCount":9662,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"A body panel or body component likely to become detached","flaggedCount":9603,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"emits excessive dense blue or clearly visible black smoke during acceleration which would obscure the view of other road users","flaggedCount":9578,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"A lens defective such that emitted light is adversely affected","flaggedCount":9476,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"A bonnet primary retaining device excessively deteriorated, ineffective or insecure","flaggedCount":9455,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"Braking effort not recording at any wheel","flaggedCount":9337,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"Indicator or hazard warning switch does not operate in accordance with the requirements","flaggedCount":9279,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"A driver's seat fore and aft adjustment mechanism not functioning as intended.","flaggedCount":9249,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"Windscreen or window in an unacceptable condition e.g. due to excessive scratching","flaggedCount":9092,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"Body, cab or chassis corroded at mounting points to the extent that overall security or stability is impaired","flaggedCount":8554,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"A main load-bearing structural member fractured or deformed such that structural rigidity is significantly reduced","flaggedCount":8374,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"A wheel bearing so rough it is likely to overheat or break up","flaggedCount":8248,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"A statutory seat belt missing","flaggedCount":8130,"percentOfTests":0.02,"testsAnalysed":54086786},{"description":"A spring insecurely attached to chassis or axle","flaggedCount":7728,"percentOfTests":0.01,"testsAnalysed":54086786},{"description":"Stop lamps remain on when the brakes are released","flaggedCount":7644,"percentOfTests":0.01,"testsAnalysed":54086786},{"description":"A wheel with more than one loose or missing wheel nut, bolt or stud","flaggedCount":7563,"percentOfTests":0.01,"testsAnalysed":54086786},{"description":"Fuel tank, pipe or hose insecure","flaggedCount":7507,"percentOfTests":0.01,"testsAnalysed":54086786},{"description":"Brake fluid significantly below minimum mark","flaggedCount":7480,"percentOfTests":0.01,"testsAnalysed":54086786},{"description":"A shock absorber insecurely attached to chassis or axle","flaggedCount":7430,"percentOfTests":0.01,"testsAnalysed":54086786},{"description":"Obligatory mirror or device not providing an adequate view to the rear","flaggedCount":7367,"percentOfTests":0.01,"testsAnalysed":54086786},{"description":"Any part of the noise suppression system likely to become detached","flaggedCount":7320,"percentOfTests":0.01,"testsAnalysed":54086786},{"description":"A passenger seat with a defective structure or the 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