| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 32 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 17 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 13 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 13 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Registration plate issues | 9 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Offside Front Direction indicators not working |1.5.1c| | 6 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear Brake excessively binding (1.2.1 (f)) | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Horn not working |1.7.3a| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Exhaust has part of the system missing |7.1.1a| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front brake disc in such a condition that it is seriously weakened | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Offside Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Brake excessively binding |1.2.1 |f|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Registration plate lamp issues | 2 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Nearside Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Offside Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Centre Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Central Rear Upper Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Central Front Lower Fork yoke insecure bottom yoke bolts loose (2.2.2 (d) (i)) | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Nearside Rear Outer Stop lamp with a multiple light source more than 1/2 not functioning (4.3.1 (a) (ii)) | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Central Front Horn not working |7.7 |a| |ii|| | 1 |
| Front Brake excessively binding both calipers |1.2.1 |f|| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls micro switch on front lever loose (4.3.2 (a) (iii)) | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| 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 |
| Nearside Rear Footrest insecure |6.2.12 |a|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Offside Rear Exhaust silencer insecure clamp corroded away (8.1.1 (b) (i)) | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Stop lamp not working With front brake |4.3.1 |a| |ii|| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| All direction indicators not working correctly don`t stay on when switched but will work if switch held on |4.4.1 |a| |ii|| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies bad connection at switch |1.3.1a| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Brake hose excessively deteriorated | 1 |
| Offside Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Front control (4.3.2 (a) (iii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Central Front Stop lamp not working front brake switch not working |4.3.1 |a| |ii|| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Position lamp not working (4.2.1 (a)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies hand control |1.3.1a| | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Nearside Front Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Nearside Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Front Fuel system component insecure |7.2.1b| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock |2.1.4 |a|| | 1 |
| Throttle operating incorrectly throttle grip insecure |6.2.7 |a| |i|| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Rear Exhaust silencer insecure exhaust clamp broken and loose (8.1.1 (b) (i)) | 1 |
| Nearside Rear Exhaust silencer insecure exhaust clamp broken and loose (8.1.1 (b) (i)) | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Nearside Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Front Headlamp aim not tested |1.6| | 1 |
| Nearside Front Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Throttle operating incorrectly not returning |6.2.1f| | 1 |
| Rear Brake component modification unsafe (1.1.21 (d) (i)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Offside Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Centre Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Brake lining|s| less than 1.0 mm thick |1.1.13 |a|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Front Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Offside Front Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Front Motorcycle structure excessively corroded wind shield |6.1.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Centre Rear Exhaust mounting missing |7.1.1c| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |