| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 74 |
| Registration plate issues | 18 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 14 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 14 |
| Drive chain excessively loose |6.2.1d| | 13 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 9 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 9 |
| Drive chain worn to excess |6.2.1e| | 8 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 7 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 5 |
| Horn not working |1.7.3a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 4 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Stop lamp missing |1.3.3a| | 3 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Nearside Rear Chain guard insecure |6.2.1c| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Centre Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 2 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil seal leaking brake side |2.3.3| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Brake locking device missing Reaction arm split pin |3.2.A1e| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Front Upper Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Upper Direction indicator not working |1.5.1c| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Centre Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced swingarm (6.1.1 (c) (i)) | 1 |
| Nearside Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake hose stretched by steering movement |3.2.B3b| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Wheel spindle locking device ineffective (5.2.1 (d)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Nearside Position lamp switch insecure |1.1.4b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Front wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Fuel system component leaking |6.1.3 |b| |i|| | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure (6.1.1 (b) (i)) | 1 |
| Stop lamp does not illuminate immediately a brake applies control one |1.3.1a| | 1 |
| Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Direction indicators not working Nsr |1.5.1c| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Upper Exhaust has part of the system missing |7.1.1a| | 1 |
| Offside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake pedal cracked |3.1.2c| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Fuel system component leaking tap leak |7.2.1a| | 1 |
| Horn control not functioning. intermittent loudness |1.7.2b| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front suspension assembly component loose |2.3.1| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Stop lamp does not illuminate immediately a brake applies With rear brake |1.3.1a| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Stop lamp does not illuminate immediately a brake applies from rear switch |1.3.1a| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Nearside Front Position lamp switch insecure |1.1.4b| | 1 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front brake lever |1.3.1a| | 1 |
| Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Front Stop lamp not working New switch fitted. (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment out of adjustment (1.1.15 (f)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort hub cracked/oval (1.2.1 (e)) | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside Drive chain sprocket worn to excess |6.2.1e| | 1 |
| An item not tested |Manual| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front Upper Throttle operating incorrectly |6.2.1f| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Rear wheel insecure |4.2.3b| | 1 |
| Rear Drive chain sprocket so worn it is likely to fail cushion drive (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain sprocket excessively loose side movement (6.1.7 (c) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Front position lamp does not face the front |1.1.1d| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Handlebar excessively deformed |2.2.1 |c| |i|| | 1 |
| Lower Exhaust has a major leak of exhaust gases corroded |6.1.2 |a|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Shock absorber has negligible damping effect lack of travel stiff |5.3.2 |b|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Offside Front Shock absorber has a serious fluid leak fork seal (5.3.2 (b)) | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Offside Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Offside Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Offside Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Front shock absorber seal failed and leaking oil nearside/left hand side |2.3.3| | 1 |
| Stop lamp does not illuminate immediately a brake applies foot/rear brake |1.3.1a| | 1 |
| Drive chain excessively tight, so that it is likely to fail stiff links in chain (6.1.7 (k) (ii)) | 1 |
| Front Brake lever has insufficient reserve travel touching handle bar on depressing (1.1.2 (a)) | 1 |
| Exhaust system insecure end can (6.1.2 (a)) | 1 |
| Nearside Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |