| Most common failures | No# failures |
|---|
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 32 |
| Headlamp aim out of alignment | 25 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 17 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 16 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Registration plate issues | 9 |
| Front wheel bearings have excessive free play |2.3.5b| | 9 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 7 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Headlamp insecure |1.2.3b| | 6 |
| Horn not working |1.7.3a| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Horn not working |7.7 |a| |ii|| | 5 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 5 |
| Riders seat insecure |6.2.1a| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Rear Brake lever mounting insecure |3.1.2a| | 5 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear Brake lever insecure |3.1.2a| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| All direction indicators not working |4.4.1 |a| |ii|| | 2 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 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 |
| Headlamp aim not tested |1.6| | 2 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 2 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Nearside Brake lever insecure |3.1.2a| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Offside Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Riders seat insecure |6.2.5 |a| |ii|| | 2 |
| Exhaust has part of the system missing |7.1.1a| | 2 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Shock absorber has negligible damping effect UNITS SOLID NO MOVEMENT (5.3.2 (b)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake lever so insecure that the brake cannot be readily applied (1.1.2 (e) (ii)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Front suspension has excessive stiffness in the suspension movement. front suspension seized |2.3.6b| | 1 |
| Central Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Headlamp not working on dipped beam (Replaced Bulb) (4.1.1 (a) (ii)) | 1 |
| Front position lamp does not illuminate immediately when switched on |No Dipped Beam| |1.1.3a| | 1 |
| Indicator tell tale not functioning |L/H| Bulb Not Working| |1.5.2| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Outer Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Brake lever pivots excessively worn |3.1.3a| | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced center stand |6.1.1 |b| |ii|| | 1 |
| Headlamp aim beam image kick up to the offside headlamp mask fitted |1.6| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Headlamp light intensity severely reduced |4.1.4 |a|| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front Front suspension assembly component cracked hub |2.3.1| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake cable excessively worn (1.1.15 (b)) | 1 |
| Rear Brake cable excessively worn (1.1.15 (b)) | 1 |
| Front Brake drum significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Brake drum significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Nearside Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Front Upper Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Centre Rear Upper Riders seat insecure |6.2.1a| | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Brake lever insecure |3.1.2a| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on new bulb needed
|1.1.3a| | 1 |
| Rear Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear Position lamp adversely affected by the operation of another lamp Rear affected by indicators (flashes) (4.2.3 (b)) | 1 |
| Stop lamp adversely affected by the operation of another lamp By Indicators (flashes) (4.3.3 (b)) | 1 |
| Stop lamp not working Front and Rear |4.3.1 |a| |ii|| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Central Front Upper Horn not working |7.7 |a| |ii|| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| All direction indicators not working not flashing |4.4.1 |a| |ii|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Brake performance not tested |1.2.1 |g|| | 1 |
| Front Upper Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Built up wheel has a bolt/s missing |4.2.1c| | 1 |
| Nearside Rear Brake lever is inoperative |3.1.3c| | 1 |
| Offside Front Steering lock stop missing |2.1.3| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Rear Brake component insecure rear brake mounting loose |1.1.21 |c|| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 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 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Position lamp likely to become detached |4.2.1 |c| |ii|| | 1 |
| Offside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| All position lamps adversely affected by the operation of another lamp all lights |1.1.3b| | 1 |
| Front suspension has excessive stiffness in the suspension movement. seized |2.3.6b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |