| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 44 |
| Registration plate issues | 29 |
| Rear reflector on motorcycle missing |1.4.1| | 18 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Horn not working |1.7.3a| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| 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| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake fluid reservoir fluid level significantly below minimum level |1.1.10 |d| |ii|| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock engine revs when stering turned to right. |2.1.4| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Indicator switch insecure nearside switchgear not fixed in position,needs pegging in position |1.5.4| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Upper Fuel cap sealing washer missing |7.2.2c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Nearside Rear Direction indicator obscured |1.5.1a| | 1 |
| Offside Rear Direction indicator obscured |1.5.1a| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Brake hose excessively twisted |3.2.B3a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Offside Front Upper Throttle operating incorrectly |6.2.1f| | 1 |
| Front Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake component insecure |1.1.21 |c|| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front An item not tested |Manual| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Rear Brake pipe excessively chafed |3.2.B2a| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Central Front Brake disc|s| is excessively distorted Front brake discs distorted excessively |3.2.A1m| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear Brake pipe union leaking fluid |3.2.B4| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| An item not tested |Manual| | 1 |
| Offside Rear Footrest insecure |6.2.12 |a|| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp lens seriously defective (4.1.1 (b) (ii)) | 1 |
| Offside Rear Lower Suspension rod attachment bracket/mounting insecure Rear brake torque arm securing bolt loose and locking pin missing (5.3.3 (a) (i)) | 1 |
| Nearside Rear Upper Shock absorber likely to become detached Upper shock absorber mounting bolt loose (5.3.2 (a) (ii)) | 1 |
| Offside Rear Upper Shock absorber likely to become detached Upper shock absorber mounting bolt loose (5.3.2 (a) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Stop lamp not working rear foot pedal control (4.3.1 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |