| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 25 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Registration plate issues | 9 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Throttle operating incorrectly |6.2.1f| | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| An item not tested |Manual| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Offside Front Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Exhaust markings indicating not for road use or similar wording |6.1.2 |c|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Brake caliper leaking and braking performance affected |1.1.16 |b| |ii|| | 1 |
| Rear Wheel spoke cracked |5.2.2 |d|| | 1 |
| Offside Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Centre Front Upper Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Front Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Stop lamp not working front control (4.3.1 (a) (ii)) | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear 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 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Throttle operating incorrectly sticks on right hand lock |6.2.1f| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. left hand grip[ |2.1.1c| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Offside Front Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Horn not working |1.7.3a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 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 |
| Centre Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Brake pipe excessively damaged |3.2.B2a| | 1 |
| Offside Brake pipe excessively damaged |3.2.B2a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Lower Fork yoke deformed |2.1.1b| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Position lamp switch insecure |1.1.4b| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Brake caliper|s| insecure |3.2.A1j| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Plate brake test indicates a sticking brake |3.3.B1a| | 1 |
| Front position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies when brake applied ,sticky |1.3.1a| | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Central Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Central Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |