| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 18 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Registration plate issues | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Rear Wheel corroded significantly reducing the original strength |4.2.1a| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front mudguard insecure |2.3.7| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Footrest insecure |6.2.1a| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Indicator switch inoperative (4.4.2 (a) (ii)) | 1 |
| Front suspension has excessive corrosion which reduces the strength of a load bearing member or its supporting structure. |2.3.8| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Handlebar handgrip not secure to handlebars. left grip on handlebars loose re-glued |2.1.1c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Steering headbearing excessively stiff or notchy notchy (2.2.2 (f) (i)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Brake component cracked and seriously reduced in strength |3.2.A1| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear |1.3.1a| | 1 |
| Front Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| All direction indicators missing |4.4.1 |a| |ii|| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake master cylinder leaking hydraulic fluid Front brake master cylinder appears to be leaking fluid |3.2.B1e| | 1 |
| Brake lever has inadequate reserve travel Brake lever comes back to handlebar when fully applied |3.1.3b| | 1 |
| Front Wheel spoke excessively bent |4.2.1b| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Wheel fractured (5.2.2 (a)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Offside Rear Lower Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear wheel bearings have excessive free play (2.4.A.2c) | 1 |
| Stop lamp not working from front control |4.3.1 |a| |ii|| | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Horn not working |1.7.3a| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |