| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 59 |
| Registration plate issues | 41 |
| Rear reflector missing (4.8.2 (a) (ii)) | 24 |
| Rear reflector missing |4.8.2 |a| |ii|| | 18 |
| Rear reflector on motorcycle missing |1.4.1| | 15 |
| Registration plate lamp issues | 12 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 5 |
| 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)) | 4 |
| Horn not working (7.7 (a)) | 4 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 4 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Clutch lever shortened so it cannot be readily operated (6.2.7 (b)) | 2 |
| Rear Brake fluid contaminated (1.8 (a)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Headlamp incorrect colour |1.2.1| | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 2 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 2 |
| Front Brake grabbing severely |1.2.1 |c|| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Horn not working |1.7.3a| | 2 |
| 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| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| 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|| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp |4.2.3 |b|| | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Central Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Rear Lower Suspension arm attachment bracket/mounting insecure |5.3.3 |a| |i|| | 1 |
| Offside Front Upper Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle sticking on right hand lock - adjusted to correct. (6.2.7 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle sticking open (6.2.7 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Rear 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 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Handlebar mounting so insecure that steering is adversely affected (2.2.1 (a) (ii)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Central Front Horn not working (7.7 (a) (ii)) | 1 |
| Offside Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Suspension component modified so the suspension is inoperative |5.3.3 |c| |ii|| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Wheel more than one fixing loose pinch bolt loose (5.2.1 (a) (ii)) | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Rear Shock absorber has a serious fluid leak both fork seals leaking |5.3.2 |b|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Horn not working Button stuck in and not working |7.7 |a| |ii|| | 1 |
| Brake locking device insecure rear caliper not located broken abs sensor |3.2.A1e| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Brake disc contaminated oil on disc off side (1.1.14 (b)) | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Brake component modification adversely affecting braking performance abs system removed (1.1.21 (d) (ii)) | 1 |
| Central Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Road spring mounting insecure |5.3.1 |a| |i|| | 1 |
| Front Upper Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Upper Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Upper Rear position lamp incorrect colour |1.1.2b| | 1 |
| Rear Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Rear Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition Baffle removed, excessively noisy. (8.1.1 (a)) | 1 |
| Headlamp reflector missing |4.1.1 |b| |ii|| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride adjuster loose/incorrect |6.2.1h| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Front Throttle operating incorrectly sticking on bar end weight (6.2.7 (a) (i)) | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Brake component inadequately mounted brake hose (1.1.21 (c)) | 1 |
| Handlebar grip insecure to handlebar front (2.2.1 (d) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort 30 - 35% (1.2.1 (e)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Engine mounting/bracket fractured N/S/F upper & O/S/F upper mounting bolts broken (6.1.8 (a) (ii)) | 1 |
| Central Front Upper Headlamp lens seriously defective headlamp had semi - transparent cover on, this was reducing the light and the beam pattern - on Velcro so removed as necessary (4.1.1 (b) (ii)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Rear Brake pedal is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Riders seat insecure rear locating lugs not in slots (6.2.5 (a) (ii)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected switch unit and grip insecure (6.2.7 (a) (ii)) | 1 |
| All direction indicators incorrect colour |4.4.3 |a|| | 1 |
| Nearside Drive chain excessively tight |6.2.1d| | 1 |
| Front Brake lever insecure (1.1.2 (e) (i)) | 1 |