| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 36 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 21 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Registration plate issues | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| 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| | 4 |
| Exhaust excessively deteriorated |7.1.1a| | 4 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Drive chain excessively loose (6.2.1d) | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Horn not working |1.7.3a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Shock absorber has a serious fluid leak Forks have a serious leak of oil. (5.3.2 (b)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Does not illuminate when front brake is applied (4.3.2 (a) (iii)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front Valve stem seriously damaged valve stem split at base (5.2.3 (j)) | 1 |
| All direction indicators not working all four (4.4.1 (a) (ii)) | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Handlebar handgrip not secure to handlebars. throttle grip loose,needs glueing back on |2.1.1c| | 1 |
| Steering lock stop ineffective due to switchgears hitting tank before lock stop is attained |2.1.3| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars nearside,hand traps between bar and tank |2.1.2b| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls offside switchgear fouls tank before lockstop is reached |2.1.2b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Centre Rear Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Rear Brake pedal pivots excessively worn (3.1.3a) | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Handlebar handgrip not secure to handlebars. l/hand |2.1.1c| | 1 |
| Front shock absorber seal failed and leaking oil l/h |2.3.3| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Horn not working (1.7.3a) | 1 |
| Nearside Handlebar handgrip not secure to handlebars. (2.1.1c) | 1 |
| Offside Handlebar handgrip not secure to handlebars. (2.1.1c) | 1 |
| Registration plate lamp issues | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Inner Front Upper Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Front Lower Brake component is excessively corroded |3.1.5| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Handlebar deformed to the extent that steering is affected |2.2.1 |c| |ii|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Exhaust has a major leak of exhaust gases front pipes to centre box blowing |6.1.2 |a|| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Brake master cylinder defective but brake still operating not returning properly (1.1.10 (b) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Offside Rear Position lamp not working |4.2.1 |a|| | 1 |
| Offside Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Stop lamp not working rear foot brake not working (4.3.1 (a) (ii)) | 1 |
| Brake disc significantly and obviously worn rear brake discs (1.1.14 (a) (i)) | 1 |
| Brake excessively binding rear (1.2.1 (f)) | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Rear Road spring mounting corroded and seriously weakened (5.3.1 (b) (i)) | 1 |
| Nearside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Offside Exhaust system insecure (6.1.2 (a)) | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Front Roller brake test indicates a severely juddering brake (3.3.A1b) | 1 |
| Rear wheel spindle securing nut(s) loose (2.4.A.2b) | 1 |
| Drive chain worn to excess (6.2.1e) | 1 |