| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 31 |
| Registration plate issues | 18 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 7 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Horn not working |1.7.3a| | 5 |
| 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| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Rear Brake disc|s| cracked |3.2.A1g| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Horn sound not in accordance with requirements (7.7 (c)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Nearside Headlamp incorrect colour |1.2.1| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Motorcycle structure adversely modified |6.1.1b| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride Rear Wheel Nut loose |6.2.1h| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake hose damaged and likely to fail chaffing in between rear spring (1.1.12 (a)) | 1 |
| Front Brake hose excessively stretched insecurely clipped (1.1.12 (b) (ii)) | 1 |
| Nearside Footrest insecure (6.2.12 (a)) | 1 |
| Offside Fork yoke modification unsafe (2.2.2 (e)) | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Position lamp missing (4.2.1 (a)) | 1 |
| Offside Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak both fork seals leaking to excess (5.3.2 (b)) | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Stop lamp not working adjust cable |4.3.1 |a| |ii|| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Offside Upper Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Registration plate lamp issues | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear control brake light not working |1.3.1a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Handlebar deformed |2.1.1b| | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Stop lamp not working control 1 (4.3.1 (a) (ii)) | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 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 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |