| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 39 |
| Registration plate issues | 22 |
| Headlamp aim beam image kick up to the offside |1.6| | 15 |
| Rear reflector on motorcycle missing |1.4.1| | 15 |
| Rear Brake disc|s| cracked |3.2.A1g| | 11 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Nearside Front Direction indicator not working |1.5.1c| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Rear Position lamp not working |4.2.1 |a|| | 4 |
| Registration plate lamp issues | 4 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 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 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 2 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 2 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Centre Front Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Central Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Horn not working |1.7.3a| | 1 |
| Rear Brake hose connection leaking (1.1.12 (c)) | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Lower Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Brake pipe excessively chafed |3.2.B2a| | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Headlamp aim not tested No beam image incorrect type for headlight application |4.1.2 |b|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Wheel fixing missing |single fixing| |5.2.1 |a| |ii|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Front Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| Rear Lower Suspension rod attachment bracket/mounting insecure Quadrant bolt loose |5.3.3 |a| |i|| | 1 |
| Rear Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies lever |1.3.1a| | 1 |
| Centre Fuel hose leaking |7.2.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Stop lamp not working on front brake |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working on rear brake |4.3.1 |a| |ii|| | 1 |
| Stop lamp not working on rear brake |4.3.1 |a| |ii|| | 1 |
| Stop lamp not working on front brake |4.3.1 |a| |ii|| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock to the left |2.1.4| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on not working |1.1.3a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Nearside Lower Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Steering damper in such a condition that the steering action is impaired. |2.1.2d| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Nearside Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Front Direction indicator light intensity significantly reduced indicators obscured by screen |4.4.3 |a|| | 1 |
| Rear Brake pedal insecure bolt loose touching screen |1.1.2 |e| |i|| | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Central Rear Position lamp not working (4.2.1 (a)) | 1 |
| Offside Rear Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Offside Rear Brake caliper inadequately mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies rear brake light bulb |1.3.1a| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Throttle operating incorrectly on full lock (6.2.7 (a) (i)) | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Offside Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Lower Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Brake component inadequately mounted front fluid resevoir (1.1.21 (c)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear 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| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Centre Rear Upper Fuel system component leaking |7.2.1a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Offside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Lower Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Horn not working (7.7 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Brake disc|s| securing bolt|s| loose front offside floating disc rivets are excessively loose |3.2.A1g| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake master cylinder insecurely mounted securing bolts loose |3.2.B1a| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Central Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake lever has restricted free movement |1.1.15 |e|| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear Shock absorber insecurely attached lower bolt loose (5.3.2 (a) (i)) | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on side light |1.1.3a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on number plate light |1.1.3a| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |