| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 41 |
| Riders seat insecure |6.2.1a| | 19 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 19 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 17 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 15 |
| Registration plate issues | 12 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Horn not working |1.7.3a| | 9 |
| Front suspension has inadequate damping effect. |2.3.6c| | 8 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 8 |
| Direction indicators not working |1.5.1c| | 7 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 4 |
| Direction indicator not working |1.5.1c| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Fuel system component leaking |7.2.1a| | 4 |
| Fuel cap sealing washer missing |7.2.2c| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Front Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Rear Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Rear Riders seat insecure |6.2.1a| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Centre Lower Motorcycle structure adversely modified |6.1.1b| | 1 |
| Rear Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working off front brake (4.3.1 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Centre Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Offside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 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 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Brake lever is inoperative |3.1.3c| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Nearside Front Direction indicator obscured |1.5.1a| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Offside Steering operation linkage fouling when handlebars turned from lock to lock (2.1.4 (a)) | 1 |
| Front Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Rear Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Vehicle identification number incomplete (0.2 (b)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Direction indicators not working all |1.5.1c| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Throttle operating incorrectly sticking |6.2.1f| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Built up wheel has a loose bolt/s |4.2.1c| | 1 |
| Steering linkage locking device ineffective (2.1.3 (d)) | 1 |
| Forks in such a condition that steering control is adversely affected (2.2.2 (d) (ii)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Rear Brake lever mounting cracked |3.1.2c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Nearside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Centre Lower Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Lower Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Motorcycle structure excessively corroded Rear under body. Near engine mount. |6.1.1a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Gradient brake test indicates a severely juddering brake |3.3.D1d| | 1 |
| Throttle operating incorrectly Sticking on. |6.2.1f| | 1 |
| Exhaust silencer likely to become detached (8.1.1 (b) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Exhaust silencer insecure |8.1.1 |b| |i|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Motorcycle structure cracked |6.1.1a| | 1 |
| Nearside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 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 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Registration plate lamp issues | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |