| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 28 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Registration plate lamp issues | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Registration plate issues | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Front Brake excessively binding (1.2.1 (f)) | 5 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Rear Brake excessively binding (1.2.1 (f)) | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Brake excessively binding |1.2.1 |f|| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Clutch lever positioned so it cannot be readily operated. Insecure. |6.2.1g| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Stop lamp not working when operated by front brake lever |4.3.1 |a| |ii|| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Roller brake test No brake control achieves an efficiency of 30% |1.2.2 |a| |i|| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear suspension bearing has excessive free play Swing arm |2.4.A2a|i|| | 1 |
| Rear Rear suspension bush excessively deteriorated swing arm bush |2.4.A2a|i|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Brake lever is so short that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake linkage excessively corroded |3.2.A1c| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Brake disc|s| excessively worn both |3.2.A1l| | 1 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Rear Shock absorber insecurely attached |5.3.2 |a| |i|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Lower Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Stop lamp does not illuminate immediately a brake applies REAR OPERATED |1.3.1a| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected knotchy with wheel raised |2.2.2 |f| |ii|| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Centre Rear Upper Rear reflector on sidecar missing |1.4.1| | 1 |
| Offside Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Brake lever is inoperative |3.1.3c| | 1 |
| Rear Suspension arm pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Rear suspension component cracked |2.4.A.1a| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Rear suspension bush has excessive free play swinging arm |2.4.A2a|i|| | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Lower Exhaust mounting missing |7.1.1c| | 1 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Offside Front Brake disc|s| excessively worn 2mm
service limit 3.5mm |3.2.A1l| | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Stop lamp not working from front brake lever (4.3.1 (a) (ii)) | 1 |
| Offside Front Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Rear Brake disc contaminated (1.1.14 (b)) | 1 |
| Position lamp switch does not operate in accordance with the requirements dip switch (4.2.2 (a)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Wheel more than one fixing loose All four axle securing bolts loose (5.2.1 (a) (ii)) | 1 |
| Offside Rear Stop lamp switch with a delay in operation rear foot brake switch needs force to operate (4.3.2 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Nearside Steering operation linkage fouling when handlebars turned from lock to lock (2.1.4 (a)) | 1 |
| Offside Steering operation linkage fouling when handlebars turned from lock to lock (2.1.4 (a)) | 1 |
| Front Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Rear Suspension component pin or bush excessively worn bottom shock bush (5.3.4 (a) (i)) | 1 |
| Nearside Front Upper Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Headlamp aim not tested *Dip beam not working* (4.1.2 (b)) | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 1 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Offside Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Brake excessively binding (1.2.1 (f)) | 1 |
| Offside Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Rear Stop lamp light intensity significantly reduced (4.3.3 (a) (ii)) | 1 |
| Rear Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Nearside Wheel bearing rough when rotated Sidecar (5.1.3 (b) (i)) | 1 |
| Nearside Shock absorber has negligible damping effect Sidecar (5.3.2 (b)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |