| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 75 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Registration plate issues | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 4 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Registration plate lamp issues | 3 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 2 |
| Horn not working |1.7.3a| | 2 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Drive belt excessively loose. |6.2.1d| | 2 |
| Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Throttle operating incorrectly rev,s alter on left hand lock. |6.2.7 |a| |i|| | 1 |
| Front position lamp does not illuminate immediately when switched on sidelight |1.1.3a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Headlamp insecure |4.1.1 |c|| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Brake performance not tested |1.2.1 |g|| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Nearside Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Nearside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure center stand does not stay in up position - falls down when moving |6.1.1 |b| |i|| | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure center stand not rigid when applied - bike wants to roll off |6.1.1 |b| |i|| | 1 |
| Brake performance not tested not safe to use brake tester as center stand drops. |1.2.1 |g|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen R/H bulb was upside down |1.6.B.1| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Wheel alignment incorrect which adversely affects the handling n/s 0mm o/s 50mm |2.5.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering n/s 0mm o/s 50mm |2.5.1| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Central Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Front Brake disc|s| insecure rivvits worn on both front brake discs |3.2.A1g| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Wheel alignment incorrect which adversely affects the handling n/s 35mm and o/s 0mm |2.4 |a|| | 1 |
| Wheel alignment incorrect which adversely affects the steering n/s 35mm and o/s 0mm |2.4 |a|| | 1 |
| Nearside Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Offside Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Drive belt so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Brake disc|s| excessively worn below service limit |3.2.A1l| | 1 |
| Drive belt worn to excess split from stone in drive belt |6.2.1e| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Brake component leaking fluid oil on the pads |3.2.B4| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Handlebar mounting clamp bolt loose wind deflector loose |2.1.1a| | 1 |
| Suspension component pin or bush excessively worn Shock absorber top mount |5.3.4 |a| |i|| | 1 |
| Rear Brake lining|s| less than 1.0 mm thick |1.1.13 |a|| | 1 |
| Brake caliper insecure Pad pin r clips missing |1.1.16 |c| |i|| | 1 |
| Rear Shock absorber has an excessively worn bush Top Shock Mount |5.3.2 |c|| | 1 |
| Headlamp aim headlamp damaged and function impaired Dip beam retaining clip missing |1.2.3a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Central Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Nearside Steering operation fouling on the fuel tank or bodywork on full lock steering lock missing |2.1.4 |b|| | 1 |
| Indicator switch inoperative |4.4.2 |a| |ii|| | 1 |
| Headlamp aim headlamp deteriorated and function impaired bulb incorrectly fitted |1.2.3a| | 1 |
| Front Brake lever is so short that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake lever has restricted free movement |1.1.15 |e|| | 1 |
| Rear Front mudguard insecure Rear accessory mud guard loose |2.3.7| | 1 |
| Offside Front Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen incorrect bulb fitted |4.1.2 |a|| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Front Wheel excessively distorted |5.2.2 |c| |i|| | 1 |
| Offside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Drive belt worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Exhaust system insecure silencer (6.1.2 (a)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Brake disc in such a condition that it is seriously weakened (1.1.14 (a) (ii)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Front Brake disc contaminated oil from leaking fork seal (1.1.14 (b)) | 1 |
| Offside Front Inner Suspension component has excessive wear or free play (5.3.3 (d)) | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Offside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Upper Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Brake master cylinder insecure (1.1.10 (c)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |