| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 12 |
| Horn not working |1.7.3a| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 4 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Registration plate issues | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Front mudguard insecure |2.3.7| | 1 |
| Rear Suspension component has excessive wear or free play (5.3.3 (d)) | 1 |
| Front Suspension component has excessive wear or free play (5.3.3 (d)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the steering front wheel not upright (2.4 (a)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Steering operation restricted in free movement from lock to lock steering movement restricted >catches on air filter (2.1.4 (c)) | 1 |
| Suspension attachment bracket/mounting insecure swing arm pivot loose (5.3.3 (a) (i)) | 1 |
| Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced frame holed and corroided (6.1.1 (c) (i)) | 1 |
| Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected rear wheel loose (5.2.1 (c) (ii)) | 1 |
| Rear Wheel fixing loose (single fixing) rear sprocket carrier axle loose (5.2.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Wheel fixing missing (single fixing) split pin missing front axle (5.2.1 (a) (ii)) | 1 |
| Brake linkage has abnormal movement of levers indicating excessive wear or maladjustment rear brake arm(hub to swing arm) (1.1.15 (f)) | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside All direction indicators not working not flashing (4.4.1 (a) (ii)) | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Brake lever attachment screws missing |3.1.2b| | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied needed adjusting up |3.1.3c| | 1 |
| Rear Brake locking device missing t/arm fitted wrong and split pin missing |3.2.A1e| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Brake back plate insecure (1.1.14 (d)) | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Horn is not continous or uniform |1.7.3c| | 1 |
| Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Headlamp light source and lamp not compatible |4.1.4 |c|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Exhaust has part of the system missing |7.1.1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Rear suspension component misaligned |2.4.A.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Brake rod excessively chafed |3.2.A1a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Centre Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |