| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 13 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Registration plate issues | 7 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Stop lamp remains on when the brakes are released | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Indicator switch insecure |1.5.4| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Nearside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Central Rear Stop lamp does not illuminate immediately a brake applies front brake light |1.3.1a| | 1 |
| Offside Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Roller brake test indicates a sticking brake brake arm sticking on |3.3.A1a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Brake fluid contaminated |1.8 |a|| | 1 |
| Rear Direction indicator not working Rear o/s |4.4.1 |a| |ii|| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Brake performance not tested |3.3| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Inner Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Direction indicator missing all |1.5.1a| | 1 |
| Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Stop lamp does not emit a steady light brake lever |1.3.1b| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Front Upper Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Front Indicator tell tale not functioning |1.5.2| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Nearside Front Indicator tell tale not functioning |1.5.2| | 1 |
| Nearside Front Indicator tell tale not operating correctly |1.5.2| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Nearside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Brake caliper excessively corroded and likely to crack (1.1.16 (d) (ii)) | 1 |
| Rear Stop lamp not working rear switch (4.3.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Nearside Wheel bearing rough when rotated on side car (5.1.3 (b) (i)) | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |