| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 32 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 16 |
| Registration plate issues | 15 |
| Rear Position lamp not working (4.2.1 (a)) | 9 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 8 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 8 |
| Front Brake excessively binding |1.2.1 |f|| | 7 |
| Front Position lamp not working (4.2.1 (a)) | 6 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 6 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 6 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 4 |
| Rear Position lamp not working |4.2.1 |a|| | 4 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 4 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Horn not working (7.7 (a)) | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Registration plate lamp issues | 3 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Horn sound not in accordance with requirements (7.7 (c)) | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Stop lamp not working front leaver (4.3.1 (a) (ii)) | 1 |
| Brake performance not tested rear brake seizing on |1.2.1 |g|| | 1 |
| Front Brake component inadequately mounted brake hose rubbing on wheel |1.1.21 |c|| | 1 |
| Exhaust mounting does not fully support the exhaust system rear bolt loose |7.1.1.c| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Headlamp light intensity severely reduced head lamp flickering on full lock (4.1.4 (a)) | 1 |
| Fuel pipe leaking excessively or a risk of fire from fuel tap area (6.1.3 (b) (ii)) | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake grabbing severely |1.2.1 |c|| | 1 |
| Offside Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Wheel excessively distorted |5.2.2 |c| |i|| | 1 |
| Rear Brake pedal cannot be released smoothly rear brake peddle unseized |3.1.3d| | 1 |
| Offside Rear Direction indicator not working repaired wire at lamp unit (4.4.1 (a) (ii)) | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear Brake excessively binding Rear brake not releasing correctly causing rear brake to bind on. |1.2.1 |f|| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Stop lamp does not emit a steady light not working |1.3.1b| | 1 |
| Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Front Brake indicates excessive fluctuation of brake effort 25kg fluctuation. |1.2.1 |e|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort 20kg fluctuation. |1.2.1 |e|| | 1 |
| Fuel cap leaking |6.1.3 |b| |i|| | 1 |
| Fuel cap ineffective |6.1.3 |b| |i|| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Offside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies front stop light switch |1.3.1a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Engine mounting/bracket missing nut |6.1.8 |a| |ii|| | 1 |
| Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced Engine to frame mounting bolt loose and lock nut missing (6.1.1 (b) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Central Rear Lower Rear reflector defective or damaged by more than 50% of the reflecting surface |4.8.1 |a| |ii|| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Wheel more than one fixing loose |5.2.1 |a| |ii|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected idle high, causing motorcycle to pull away without operating the throttle |6.2.7 |a| |ii|| | 1 |
| Horn not working |1.7.3a| | 1 |
| Direction indicators not working all |1.5.1c| | 1 |
| Front Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls rear brake lever (4.3.2 (a) (iii)) | 1 |
| Brake pedal anti-slip provision loose (1.1.2 (c)) | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Front Stop lamp missing |4.3.1 |a| |ii|| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Position lamp not working sidecar (4.2.1 (a)) | 1 |
| Direction indicator obviously incorrectly positioned nearside lamps on bike operating with side car lamps (4.4.3 (a)) | 1 |
| Central Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Suspension attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Central Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Central Front Upper Front position lamp missing no bulb ln holder |1.1.1a| | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Front Brake master cylinder leaking |1.1.10 |b| |ii|| | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen L.E.D headlamp bulbs have no beam pattern (4.1.2 (a)) | 1 |
| Offside Front Position lamp switch does not illuminate all position lamps with a single operation (4.2.2 (a)) | 1 |
| Nearside Rear Direction indicator not working Bad contact to live feed (4.4.1 (a) (ii)) | 1 |
| Position lamp not working Tail lamp not working. (4.2.1 (a)) | 1 |
| Headlamp switch faulty main beam not always coming on |1.2.4| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Horn emits 2 or more alternating tones |1.7.3b| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear suspension component loose main engine bolt |2.4.A.1a| | 1 |
| Nearside Direction indicator not working both |4.4.1 |a| |ii|| | 1 |
| Stop lamp not working with front control (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies Front Brake Switch |1.3.1a| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Stop lamp not working front brake switch (4.3.1 (a) (ii)) | 1 |
| Front Brake hose excessively damaged |1.1.12 |b| |ii|| | 1 |
| Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Central Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Stop lamp not working Off front brake lever (4.3.1 (a) (ii)) | 1 |
| Nearside Brake lever has insufficient reserve travel Brake lever (1.1.2 (a)) | 1 |
| Stop lamp not working with front control |4.3.1 |a| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Position lamp switch does not operate in accordance with the requirements (4.2.2 (a)) | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Exhaust has a major leak of exhaust gases down pipe corroded in half (6.1.2 (a)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies brake light switch faulty |1.3.1a| | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Seat insecure |Seat locking device sticking| |6.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Rear Direction indicator not working L/H |4.4.1 |a| |ii|| | 1 |
| Front Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Front Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Front Brake fluid significantly below minimum mark |1.1.10 |d| |ii|| | 1 |
| Rear Brake pedal pivot has excessive free play |1.1.1 |b|| | 1 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Central Front Roller brake test indicates a binding brake front brake binding |3.3.A1a| | 1 |
| Front Stop lamp not working stop switch |4.3.1 |a| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the handling rear wheel rims built up backward |2.4 |a|| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Brake disc fractured FRONT BRAKE DISC BEND (1.1.14 (a) (ii)) | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front Front suspension has inadequate damping effect. collapsed under weight |2.3.6c| | 1 |
| Rear Rear suspension bush has excessive free play engine bushes worn |2.4.A2a|i|| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Brake lever has insufficient reserve travel front brake lever hits handle bars (1.1.2 (a)) | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Roller brake test indicates a severely juddering brake front brake has slight juder |3.3.A1b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Position lamp not working tail lamp inop |4.2.1 |a|| | 1 |
| Exhaust has a major leak of exhaust gases bolts missing from manifold (6.1.2 (a)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |