| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 87 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 37 |
| Stop lamp remains on when the brakes are released | 36 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 28 |
| Registration plate issues | 16 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 16 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Stop lamp not working (4.3.1 (a) (ii)) | 14 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 13 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 11 |
| Stop lamp remains on when the brake is released |1.3.1e| | 10 |
| Rear reflector on motorcycle obscured |1.4.1| | 10 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 10 |
| Rear reflector on motorcycle obscured |1.4.2b| | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Front Position lamp not working (4.2.1 (a)) | 8 |
| Rear Brake excessively binding (1.2.1 (f)) | 8 |
| Horn not working |1.7.3a| | 8 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 8 |
| Stop lamp not working |4.3.1 |a| |ii|| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 7 |
| Rear Position lamp not working (4.2.1 (a)) | 7 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 7 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 7 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 6 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 6 |
| Front Brake excessively binding (1.2.1 (f)) | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 6 |
| Nearside Front Direction indicators not working |1.5.1c| | 6 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 5 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Rear Brake excessively binding |1.2.1 |f|| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Offside Front Direction indicators not working |1.5.1c| | 4 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 4 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 4 |
| Front brake disc in such a condition that it is seriously weakened | 4 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Front Position lamp not working |4.2.1 |a|| | 4 |
| Front Front position lamp missing |1.1.1a| | 3 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 3 |
| Rear Brake lever is bent and the brake cannot be readily applied (1.1.2 (d)) | 3 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 3 |
| Rear Brake lining|s| less than 1.0 mm thick |1.1.13 |a|| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 3 |
| Rear Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 3 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 3 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 3 |
| Roller brake test brake efficiency less than 27.5% overall (1.2.2 (a) (ii)) | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 3 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Roller brake test No brake control achieves an efficiency of 30% |1.2.2 |a| |i|| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Offside Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 2 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Central Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Nearside Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Nearside Direction indicator not working |1.5.1c| | 2 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Nearside Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 2 |
| Offside Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 2 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 2 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 2 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Indicator tell tale not functioning |1.5.2| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Nearside Indicator tell tale not functioning |1.5.2| | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Rear Brake lever is so short that the brake cannot be readily applied |1.1.2 |d|| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 2 |
| Nearside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Brake lever mounting insecure |3.1.2a| | 2 |
| Nearside Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 2 |