| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 74 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 73 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 72 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 66 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 47 |
| Registration plate issues | 35 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 33 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 32 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 26 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 19 |
| Horn not working |1.7.3a| | 17 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 16 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 15 |
| Rear reflector on motorcycle missing |1.4.1| | 15 |
| Headlamp insecure |1.2.3b| | 12 |
| Stop lamp remains on when the brake is released |1.3.1e| | 12 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 11 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 11 |
| Headlamp aim not tested |1.6| | 10 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 10 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 10 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 10 |
| Throttle operating incorrectly |6.2.1f| | 9 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 9 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 9 |
| Stop lamp not working (4.3.1 (a) (ii)) | 9 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 8 |
| Riders seat insecure |6.2.1a| | 8 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 8 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 8 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 8 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 8 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 8 |
| Headlamp aim not tested (4.1.2 (b)) | 8 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 7 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 7 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 7 |
| Stop lamp remains on when the brakes are released | 7 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 7 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 6 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| 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| | 6 |
| Offside Front Direction indicators not working |1.5.1c| | 6 |
| Nearside Front Direction indicator not working |1.5.1c| | 5 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 5 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 5 |
| Rear Position lamp not working (4.2.1 (a)) | 5 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Direction indicators not working |1.5.1c| | 4 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 4 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Exhaust mounting missing |7.1.1c| | 4 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 4 |
| Nearside Front Direction indicators not working |1.5.1c| | 4 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 4 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 4 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 4 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 3 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Front mudguard insecure |2.3.7| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 3 |
| Rear Position lamp not working |4.2.1 |a|| | 3 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 3 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 3 |
| Rear position lamp incorrect colour |1.1.2b| | 3 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 3 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Registration plate lamp issues | 3 |
| All direction indicators not working (4.4.1 (a) (ii)) | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Headlamp insecure (4.1.1 (c)) | 3 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 2 |
| Nearside Front Direction indicator missing |1.5.1a| | 2 |
| Offside Front Direction indicator missing |1.5.1a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Offside Direction indicator not working |1.5.1c| | 2 |
| Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Front Direction indicator missing |4.4.1 |a| |ii|| | 2 |
| Offside Front Direction indicator missing |4.4.1 |a| |ii|| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Headlamp aim not tested |4.1.2 |b|| | 2 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 2 |
| Nearside Rear Direction indicator incorrect colour |4.4.3 |a|| | 2 |
| Offside Rear Direction indicator incorrect colour |4.4.3 |a|| | 2 |
| Stop lamp emits other than a steady red light |1.3.1b| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Rear Brake lever insecure |3.1.2a| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Offside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Footrest insecure |6.2.1a| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Front Headlamp insecure (4.1.1 (c)) | 2 |
| Front Wheel spindle loose (5.2.1 (c) (i)) | 2 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Horn not working (7.7 (a)) | 2 |