| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 42 |
| Registration plate issues | 12 |
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Throttle operating incorrectly |6.2.1f| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Throttle operating incorrectly |6.2.1f| | 2 |
| Indicator switch insecure |1.5.4| | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| 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| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Horn not working |1.7.3a| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Front Stop lamp deteriorated and function impaired front lever had dirty contacts which affected break light, action- cleaned contacts now functions as intended. |1.3.3a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Rear suspension bearing has excessive free play Swing arm pivot bushes/bearings |2.4.A2a|i|| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride Sprocket nuts cracked |6.2.1h| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Exhaust has part of the system missing |7.1.1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Rear 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 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Brake pedal pivot has excessive free play |1.1.1 |b|| | 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 |
| Nearside Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Offside Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Front An item not tested |Manual| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Brake lever attachment screws loose |3.1.2b| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Stop lamp not working |1.2.1b| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen Kick up line to the right |4.1.2 |a|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Wheel more than one fixing missing nearside spindle pinch bolts missing,off side bolts loose (5.2.1 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front position lamp does not illuminate immediately when switched on (1.1.3a) | 1 |
| Front suspension fouling which affects the movement of the front suspension. (2.3.6a) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Brake performance not tested Front brake is binding excessively & the wheel hardly turns (1.2.1 (g)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Front Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Central Front Upper Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Brake fluid not visible (1.1.10 (d) (iii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Exhaust has a major leak of exhaust gases Cylinder 2 header pipe weld severed at collector. (6.1.2 (a)) | 1 |
| Central Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Rear Brake pedal has insufficient reserve travel rear brake pedal has excess travel. (1.1.2 (a)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Valve stem seriously damaged badly perished (5.2.3 (j)) | 1 |
| Front Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |