| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 93 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 53 |
| Drive chain excessively loose |6.2.1d| | 39 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 37 |
| Horn not working |1.7.3a| | 28 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 28 |
| Registration plate issues | 18 |
| Front wheel bearings have excessive free play |2.3.5b| | 16 |
| Front Brake excessively binding (1.2.1 (f)) | 16 |
| Headlamp aim beam image kick up to the offside |1.6| | 14 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 13 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 12 |
| Drive chain worn to excess |6.2.1e| | 11 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 11 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 10 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 10 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 10 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 8 |
| Rear Brake excessively binding (1.2.1 (f)) | 8 |
| Throttle operating incorrectly |6.2.1f| | 7 |
| Horn not working (7.7 (a)) | 7 |
| Rear Brake excessively binding |1.2.1 |f|| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 6 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Rear Brake disc|s| cracked |3.2.A1g| | 6 |
| Front Brake disc|s| cracked |3.2.A1g| | 5 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Front Horn not working |1.7.3a| | 5 |
| Horn not working |7.7 |a| |ii|| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Horn not working (7.7 (a) (ii)) | 5 |
| Brake pedal attachment screws loose |3.1.2b| | 4 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 4 |
| Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Horn sound not in accordance with requirements (7.7 (c)) | 4 |
| Front Brake excessively binding |1.2.1 |f|| | 3 |
| Front Riders seat insecure |6.2.1a| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 3 |
| Rear Brake pedal insecure |3.1.2a| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Headlamp switch faulty |1.2.4| | 3 |
| Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Offside Front Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Front position lamp incorrect colour |1.1.2a| | 3 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 3 |
| Brake pedal insecure |3.1.2a| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Rear Brake pedal attachment screws loose |3.1.2b| | 2 |
| Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| 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| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Horn is not a constant note |1.7.3c| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Fuel hose leaking |7.2.1a| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 2 |
| Brake pedal insecure |1.1.2 |e| |i|| | 2 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 2 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 2 |
| Front Steering movement excessively rough with the wheel raised |2.2.1b| | 2 |
| Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Rear position lamp insecure |1.1.1c| | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Indicator switch insecure |1.5.4| | 2 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Steering headbearing has excessive free play (2.2.2) | 2 |
| Horn not working (1.7.3a) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Offside Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Nearside Front Brake disc fractured (1.1.14 (a) (ii)) | 2 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Brake excessively binding (1.2.1 (f)) | 2 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |