| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 15 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Horn not working |1.7.3a| | 10 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 9 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Registration plate issues | 7 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 3 |
| Handlebar mounting clamp loose |2.1.1a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Fuel cap sealing washer missing |7.2.2c| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Offside Direction indicators not working |1.5.1c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Offside Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Steering linkage has excessive free play |2.2.2| | 2 |
| Nearside Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Direction indicators not working all |1.5.1c| | 2 |
| Brake hose damaged | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Front Brake hose which buldges |3.2.B4| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Centre Front Horn not working |1.7.3a| | 2 |
| Centre Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Offside Front Upper Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Rear mono-shock pivot excessively worn top mounting |2.4.B.4| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Direction indicators not working All |1.5.1c| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Steering headbearing has excessive free play very knotchy and sticks in the straight ahead position |2.2.2| | 1 |
| Rear Brake lever attachment screws loose |3.1.2b| | 1 |
| Offside Rear Brake lever insecure |3.1.2a| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Handlebar mounting insecure |2.2.1 |a| |i|| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Wheel alignment incorrect which adversely affects the steering Front locking bolt appears loose? |2.5.1| | 1 |
| Front Brake component is excessively corroded pads seperated. |3.1.5| | 1 |
| Rear Rear suspension bush has excessive free play shocker |2.4.A2a|i|| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort brake lever pulls to the handlegrip |3.3.A1c| | 1 |
| Exhaust mounting does not fully support the exhaust system loose |7.1.1.c| | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Brake lining|s| less than 1.0 mm thick |1.1.13 |a|| | 1 |
| Rear Roller brake test indicates a binding brake slight bind |3.3.A1a| | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Brake lever mounting insecure |3.1.2a| | 1 |
| Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment |1.1.15 |f|| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Nearside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Offside Brake lever pivots excessively worn |3.1.3a| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected insecure |6.2.7 |a| |ii|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Brake master cylinder has a seized master cylinder pivot. |3.2.B5| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Outer Front Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear brake lever |1.3.1a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Headlamp switch faulty full beam triggers main beam to switch off |1.2.4| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Stop lamp not working rear lever |4.3.1 |a| |ii|| | 1 |
| Central Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Central Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Upper Direction indicators not working |1.5.1c| | 1 |
| Offside Upper Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Brake drum|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Brake lever is inoperative |3.1.3c| | 1 |
| Decelerometer brake test indicates a sticking brake |3.3.E1d| | 1 |
| Central Rear Motorcycle structure joining/attachment plate or fastening insecure mud guard and no-plate |6.1.1 |b| |i|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Central Rear Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Rear Brake lagging in operation |1.2.1 |d|| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Handlebar mounting insecure R/H Swith gear. (2.2.1 (a) (i)) | 1 |
| Rear Brake lever has inadequate reserve travel (3.1.3b) | 1 |
| Brake hose excessively deteriorated | 1 |
| Central Front Upper Horn not working (7.7 (a) (ii)) | 1 |
| Rear Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 1 |
| Nearside Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| 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 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Nearside Front Direction indicator not working does not always work when switched to the left (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working does not always work when switched to the left (4.4.1 (a) (ii)) | 1 |
| Front Brake lever has insufficient reserve travel brake lever insufficient pressure and comes to bar (1.1.2 (a)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Brake excessively binding binding excessively once brakes applied and released (1.2.1 (f)) | 1 |
| Rear Brake excessively binding rear brake remains stuck on when lever released (1.2.1 (f)) | 1 |
| Brake caliper inadequately mounted and braking performance affected Caliper floating pins, not floating caliper and bending disc. resulting in no reserve travel. (1.1.16 (c) (ii)) | 1 |
| Fuel cap ineffective seal missing (6.1.3 (b) (i)) | 1 |
| Central Lower Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Stop lamp not working from rear (4.3.1 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect not returning (5.3.2 (b)) | 1 |
| Exhaust has a major leak of exhaust gases Blowing at cylinder head (6.1.2 (a)) | 1 |
| Nearside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases fractured downpipe from manifold (6.1.2 (a)) | 1 |