| Most common failures | No# failures |
|---|
| Registration plate issues | 26 |
| Headlamp aim out of alignment | 14 |
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 7 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Horn not working |1.7.3a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| 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| | 4 |
| Offside Front Footrest insecure |6.2.1a| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Front Footrest insecure |6.2.1a| | 3 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Nearside Footrest insecure |6.2.1a| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Offside Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Centre Rear Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Centre Front Front mudguard insecure |2.3.7| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Centre Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Wheel fixing missing |single fixing| split pin. |5.2.1 |a| |ii|| | 1 |
| Offside Position lamp switch insecure |1.1.4b| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Direction indicator not working all |1.5.1c| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Brake performance not tested |3.3| | 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 |
| Offside Motorcycle structure cracked |6.1.1a| | 1 |
| Nearside Rear Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Nearside Front Brake component leaking fluid |3.2.B4| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Offside Front Brake component is fractured |3.1.5| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Brake hose damaged | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Front Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Offside Front Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear reflector on motorcycle deteriorated and function impaired |1.4.2a| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Offside Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Throttle operating incorrectly does not freely return |6.2.1f| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Stop lamp not working when operated from front brake (4.3.1 (a) (ii)) | 1 |
| Front Direction indicator likely to become detached R/H (4.4.1 (c) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected Does not return (6.2.7 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp not working BOTH (4.3.1 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |