| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 29 |
| Registration plate issues | 20 |
| Rear reflector on motorcycle missing |1.4.1| | 18 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Headlamp aim beam image kick up to the offside |1.6| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Horn not working |1.7.3a| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Rear Drive chain excessively tight |6.2.1d| | 3 |
| Offside Footrest insecure |6.2.1a| | 3 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Brake hose excessively deteriorated | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil Left hand front fork seal is leaking oil |2.3.3| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear Brake hose fouling fouling exhaust |3.2.B3b| | 1 |
| Throttle operating incorrectly staying on when steering is on lock |6.2.1f| | 1 |
| Front suspension spring worn and seriously weakened |2.3.2b| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 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 |
| Offside Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Upper Steering control fouling between components which interferes with the free movement of the steering at speedo |2.1.2a| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Central Front Inner Steering headbearing has excessive free play |2.2.2| | 1 |
| Inner Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| An item not tested |Manual| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies brake |1.3.1a| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Gradient brake test No brake control achieves an efficiency of 30%. |3.3.D1a| | 1 |
| Gradient brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.D1b| | 1 |
| Gradient brake test Neither brake control achieves an efficiency of 25% |3.3.D1b| | 1 |
| Offside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Direction indicator not working all |1.5.1c| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Nearside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Centre Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Sidecar front position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Horn missing |1.7.1| | 1 |
| Nearside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Rear Rear mono-shock insecure |2.4.B.4| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Rear Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Stop lamp does not illuminate immediately a brake applies from rear brake pedal |1.3.1a| | 1 |
| Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Position lamp likely to become detached (4.2.1 (c) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Footrest insecure (6.2.12 (a)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock brake hose catching on bodywork (2.1.4 (b)) | 1 |
| Front Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |