| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 24 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 11 |
| Steering headbearing has excessive free play |2.2.2| | 8 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Registration plate issues | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 2 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Fuel tank leaking |7.2.1a| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Offside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Brake component leaking fluid brake master cyclinder fluid level window |3.2.B4| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Brake lever attachment screws missing |3.1.2b| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Rear Brake pedal attachment screws missing. |3.1.2b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Offside Lower Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Front Stop lamp does not emit a steady light Front Brake lever does not light up rear brake light |1.3.1b| | 1 |
| Lower Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Nearside Front Sidecar direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Sidecar direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Suspension component modified so the suspension is inoperative (5.3.3 (c) (ii)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Lower Motorcycle structure cracked |6.1.1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Brake performance not tested |3.3| | 1 |
| Centre Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Stop lamp does not illuminate immediately a brake applies from front |1.3.1a| | 1 |
| An item not tested |Manual| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Offside Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Front Gradient brake test indicates a sticking brake |3.3.D1c| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Nearside Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Offside Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Rear Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake pedal is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Offside Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Brake hose damaged | 1 |
| Brake excessively binding front brakes binding (1.2.1 (f)) | 1 |
| Stop lamp not working front brake light switch not working (4.3.1 (a) (ii)) | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Centre Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Centre Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Brake locking device missing split pin missing from rear brake anchor |3.2.A1e| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |