| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 27 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 17 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 15 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Front wheel bearings have excessive free play |2.3.5b| | 10 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 9 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 8 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 7 |
| Horn not working |1.7.3a| | 7 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 5 |
| Registration plate lamp issues | 5 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Nearside 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 Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Registration plate issues | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Brake performance not tested |3.3| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| 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 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 2 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake lever is inoperative |3.1.3c| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Offside Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| An item not tested |Manual| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| 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| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Handlebar handgrip missing |2.1.1c| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Rear suspension bush has excessive free play engine pivot. |2.4.A2a|i|| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Throttle operating incorrectly throttle sticking on |6.2.1f| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Rear Plate brake test indicates a sticking brake |3.3.B1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Front Plate brake test indicates a severely grabbing brake |3.3.B1b| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Nearside Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Centre Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Centre Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Headlamp switch faulty Headlamp pass switch not working |1.2.4| | 1 |
| Horn control not functioning. Horn not working |1.7.2b| | 1 |
| Front Front shock absorber seal failed and leaking oil Front fork oil seals failed |2.3.3| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Wheel spindle or securing nut|s| so insecure that wheel security or steering control is adversely affected |5.2.1 |c| |ii|| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Roller brake test indicates a binding brake lever in hub |3.3.A1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Centre Front Lower Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Centre Front Lower Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Centre Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Rear Brake locking device insecure |3.2.A1e| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Offside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear suspension bearing has excessive free play engine mounts etc |2.4.A2a|i|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Centre Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Upper Indicator tell tale not functioning |1.5.2| | 1 |
| Exhaust has a major leak of exhaust gases leak from rear of silencer (6.1.2 (a)) | 1 |
| Offside Engine mounting/bracket bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Offside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Nearside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Nearside Rear Shock absorber likely to become detached (5.3.2 (a) (ii)) | 1 |
| Rear Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced near nearside shocker (6.1.1 (c) (i)) | 1 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Shock absorber has a serious fluid leak forks both (5.3.2 (b)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Throttle operating incorrectly sticking in-between operation. (6.2.7 (a) (i)) | 1 |