| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 38 |
| Registration plate issues | 9 |
| Horn not working (7.7 (a) (ii)) | 9 |
| Registration plate lamp issues | 8 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 7 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Rear Brake excessively binding (1.2.1 (f)) | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Horn not working |1.7.3a| | 3 |
| Brake performance not tested (1.2.1 (g)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Rear Brake disc contaminated (1.1.14 (b)) | 2 |
| Handlebar retaining device loose (2.2.1 (b) (i)) | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Stop lamp not working not working when front brake applied. |4.3.1 |a| |ii|| | 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 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Lower Suspension rod ball joint excessively worn swing arm to shocker linkage (5.3.4 (a) (i)) | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Exhaust mounting does not fully support the exhaust system Silencer loose on exhaust pipe |7.1.1.c| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Horn not working Horn missing (7.7 (a)) | 1 |
| Offside Front Brake component insecure Brake line guide insecure (1.1.21 (c)) | 1 |
| Central Front Upper Horn not working connections cleaned (7.7 (a) (ii)) | 1 |
| Nearside Rear Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Direction indicator light intensity significantly reduced under half working (4.4.3 (a)) | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake performance not tested Rear pads worn out. |3.3| | 1 |
| Headlamp aim not tested Headlamps not working. |1.6| | 1 |
| Throttle operating incorrectly sticking open full left hand lock (6.2.7 (a) (i)) | 1 |
| Steering headbearing excessively stiff or notchy notchy with front wheel raised (2.2.2 (f) (i)) | 1 |
| Central Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Fork yoke insecure Centre yoke nut loose (2.2.2 (d) (i)) | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Front suspension assembly component loose yoke top nut |2.3.1| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Lower Shock absorber insecurely attached |5.3.2 |a| |i|| | 1 |
| Central Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Horn not working horn not working |7.7 |a| |ii|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak front left hand fork seal leaking |5.3.2 |b|| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Brake pedal insecure |1.1.2 |e| |i|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Brake performance not tested (1.2.1 (g)) | 1 |
| Rear Brake performance not tested (1.2.1 (g)) | 1 |
| Central Front Lower Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Central Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Stop lamp not working Front brake (4.3.1 (a) (ii)) | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Upper Fork yoke insecure nut (2.2.2 (d) (i)) | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Rear Brake disc contaminated grease (1.1.14 (b)) | 1 |
| Front Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Throttle operating incorrectly Throttle Sticking |6.2.1f| | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Exhaust silencer likely to become detached (8.1.1 (b) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Suspension component likely to fail rear suspension seized (5.3.3 (b) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Front Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Nearside Front Brake lever excessively damaged (3.2.A1c) | 1 |
| Nearside Front Exhaust has part of the system missing (7.1.1a) | 1 |
| Nearside Front Exhaust mounting missing (7.1.1c) | 1 |
| Nearside Front Exhaust markings indicating not for road use or similar wording (7.1.4) | 1 |
| Horn control defective |1.7.2a| | 1 |
| Offside Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |