| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 14 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 10 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front position lamp insecure |1.1.1c| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Horn not working |1.7.3a| | 3 |
| Headlamp insecure |1.2.3b| | 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 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake lever insecure |3.1.2a| | 2 |
| Rear Direction indicator missing |1.5.1a| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Upper Handlebar mounting clamp loose |2.1.1a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Centre Front Upper Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Nearside Front Lower Steering damper ineffective |2.1.2d| | 1 |
| Nearside Rear Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Lower Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Nearside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front suspension has excessive stiffness in the suspension movement. no movement |2.3.6b| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Front Shock absorber has a serious fluid leak both fork oil seals (5.3.2 (b)) | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front Headlamp aim not tested head lamp not working (4.1.2 (b)) | 1 |
| Rear Position lamp light intensity significantly reduced one bulb out in rear lamp (4.2.3 (a) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak both fork oil seal blown (5.3.2 (b)) | 1 |
| Offside Outer Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Nearside Brake lever insecure |3.1.2a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Front Brake lever excessively damaged |3.2.A1c| | 1 |
| Registration plate issues | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Centre Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Rear Direction indicator obscured |1.5.1a| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Forks excessively corroded |2.2.2 |d| |i|| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Lower Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |