| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 34 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 25 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 22 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 19 |
| Horn not working |1.7.3a| | 17 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 16 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 11 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 8 |
| Riders seat insecure |6.2.1a| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Registration plate issues | 4 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Handlebar mounting clamp loose |2.1.1a| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 3 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 3 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 2 |
| Rear Brake pedal insecure |3.1.2a| | 2 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 2 |
| 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 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Front wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Centre Rear Gradient brake test indicates a severely juddering brake |3.3.D1d| | 1 |
| Front Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Front Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Rear Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Rear Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Front Plate brake test indicates a sticking brake |3.3.B1a| | 1 |
| Rear Brake drum|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Brake lever attachment screws missing |3.1.2b| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Offside Front suspension assembly component missing |2.3.1| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Brake back plate|s| insecure |3.2.A1j| | 1 |
| Brake component is severely distorted |3.1.5| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Built up wheel has a loose bolt/s |4.2.1c| | 1 |
| Front Built up wheel has a bolt/s missing |4.2.1c| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Fuel pipe union leaking |7.2.1a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Front mudguard can easily contact any fixed point of the motor bicycle. |2.3.7| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Nearside Front Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Nearside Front suspension spring worn and seriously weakened |2.3.2b| | 1 |
| Front Brake component has an inadequate repair |3.1.5| | 1 |
| Nearside Fuel system component leaking |7.2.1a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Rear wheel has a missing wheel stud|s| |4.2.3a| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Throttle operating incorrectly not returning/ sticking |6.2.1f| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Built up wheel has a bolt/s missing |4.2.1c| | 1 |
| Offside Front Headlamp switch faulty new switch fitted |1.2.4| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Wheel fractured significantly reducing the original strength |4.2.1a| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| An item not tested |Manual| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Front Built up wheel has a missing rivet/s |4.2.1c| | 1 |
| Stop lamp not working intermittant |4.3.1 |a| |ii|| | 1 |
| Brake lever not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Front suspension spring worn and seriously weakened |2.3.2b| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Nearside Lower Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Position lamp showing white light to the rear |4.2.3 |a| |ii|| | 1 |
| Front Gradient brake test indicates a sticking brake |3.3.D1c| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Headlamp main beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear suspension component loose Both rear shock mounting nuts |2.4.A.1a| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Offside Brake lever insecure |3.1.2a| | 1 |
| Throttle operating incorrectly Throttle inoperative. |6.2.7 |a| |i|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing (2.2.1a) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Wheel has an excessively distorted bead rim. (4.2.2) | 1 |
| Rear Wheel has an excessively distorted bead rim. (4.2.2) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. (3.3.A2b) | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Handlebar grip missing (2.2.1 (d) (i)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front suspension assembly component excessively bent (2.3.1) | 1 |
| Stop lamp damaged and function impaired (1.3.3a) | 1 |