| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 24 |
| Rear reflector on motorcycle missing |1.4.1| | 21 |
| Registration plate issues | 19 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 18 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Horn not working |1.7.3a| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear Drive chain excessively tight |6.2.1d| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Chain guard insecure |6.2.1c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort 50% |3.3.A1d| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Front wheel spindle securing nut locking device missing Pinch bolt |2.3.5a| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Rear Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front shock absorber seal failed and leaking oil Nsf |2.3.3| | 1 |
| Drive chain excessively tight Tight spot |6.2.1d| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Nearside Handlebar retaining device missing |2.2.1 |b| |i|| | 1 |
| Offside Handlebar retaining device missing |2.2.1 |b| |i|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Drive chain so loose it is likely to fail Split link circlip missing |6.1.7 |c| |ii|| | 1 |
| Front position lamp does not illuminate immediately when switched on Bulb blown |1.1.3a| | 1 |
| Central Rear Stop lamp does not illuminate by the operation of both brake controls rear brake light inoperative (4.3.2 (a) (iii)) | 1 |
| Brake disc|s| cracked |3.2.A1g| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 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 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Nearside Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Offside Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Exhaust system insecure rear box to front pipe (6.1.2 (a)) | 1 |
| Offside Drive chain sprocket excessively loose chain adjuster plate loose (6.1.7 (c) (i)) | 1 |
| Position lamp switch does not illuminate all position lamps with a single operation (4.2.2 (a)) | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Brake hose leaking (1.1.12 (c)) | 1 |
| Rear Brake hose damaged and likely to fail (1.1.12 (a)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Nearside Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Nearside Rear Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Offside Rear Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Central Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Offside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies brake |1.3.1a| | 1 |
| Nearside Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front An item not tested |Manual| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Inner Rear Direction indicator obscured |1.5.1a| | 1 |
| Exhaust has a major leak of exhaust gases excessively leaking at cylinder head |6.1.2 |a|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Brake master cylinder has an excessively worn master cylinder pivot. rear master cylinder clevis pin |3.2.B5| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease fork oil contaminating disc |3.2.A1k| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| An item not tested |Manual| | 1 |
| Rear Lower Suspension rod pin or bush excessively worn SIEZED (5.3.4 (a) (i)) | 1 |
| Front Brake caliper excessively weakened by corrosion caliper is binding (1.1.16 (d) (i)) | 1 |
| Rear Brake caliper excessively weakened by corrosion caliper is binding (1.1.16 (d) (i)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |