| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 78 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 59 |
| Rear reflector on motorcycle missing |1.4.1| | 26 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 26 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 23 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 23 |
| Registration plate issues | 21 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 19 |
| Stop lamp remains on when the brakes are released | 17 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 17 |
| Horn not working |1.7.3a| | 15 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 14 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 14 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 14 |
| Steering headbearing has excessive free play |2.2.2| | 14 |
| Rear reflector missing (4.8.2 (a) (ii)) | 13 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 13 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Rear Position lamp not working (4.2.1 (a)) | 12 |
| Rear reflector missing |4.8.2 |a| |ii|| | 12 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Offside Front Direction indicators not working |1.5.1c| | 9 |
| Front Brake excessively binding (1.2.1 (f)) | 9 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 8 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 8 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 8 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 7 |
| Horn not working (7.7 (a) (ii)) | 7 |
| Headlamp aim not tested (4.1.2 (b)) | 7 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 7 |
| Registration plate lamp issues | 7 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| 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|| | 7 |
| Horn not working |7.7 |a| |ii|| | 7 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 6 |
| Riders seat insecure |6.2.1a| | 6 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 6 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Nearside Front Direction indicator not working |1.5.1c| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 5 |
| Nearside Front Direction indicators not working |1.5.1c| | 5 |
| Riders seat insecure (6.2.5 (a) (ii)) | 5 |
| Indicator switch defective |1.5.4| | 5 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front Brake excessively binding |1.2.1 |f|| | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 4 |
| 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 position lamp incorrect colour |1.1.2b| | 4 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 4 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 4 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Rear Position lamp not working |4.2.1 |a|| | 4 |
| Horn not working (7.7 (a)) | 4 |
| Rear Brake lever insecure |3.1.2a| | 4 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 4 |
| Exhaust excessively deteriorated |7.1.1a| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 4 |
| Steering lock stop missing |2.1.3| | 3 |
| Steering lock stop ineffective |2.1.3| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Front Headlamp aim not tested (4.1.2 (b)) | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Front Direction indicators not working |1.5.1c| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front Horn not working |1.7.3a| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Front position lamp damaged and function impaired |1.1.1b| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Rear Brake lever mounting insecure |3.1.2a| | 3 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 3 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 3 |
| All direction indicators not working (4.4.1 (a) (ii)) | 3 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 3 |
| Front Brake lever is bent and the brake cannot be readily applied (1.1.2 (d)) | 3 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Horn control not functioning. |1.7.2b| | 2 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Fuel cap sealing washer missing |7.2.2c| | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Handlebar excessively deformed |2.2.1 |c| |i|| | 2 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Position lamp showing white light to the rear |4.2.3 |a| |ii|| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Brake lever insecure (1.1.2 (e) (i)) | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 2 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Position lamp not working (4.2.1 (a)) | 2 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Fuel cap ineffective |6.1.3 |b| |i|| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 2 |
| Rear Brake cable guide defective and affecting operation (1.1.15 (d)) | 2 |
| Nearside Front All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| All direction indicators not working |4.4.1 |a| |ii|| | 2 |
| Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 2 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Brake lever insecure |3.1.2a| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| All position lamps not working (4.2.1 (a)) | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Offside Steering linkage locking device ineffective (2.1.3 (d)) | 2 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 2 |
| Rear Brake cable insecure | 2 |
| Stop lamp emits other than a steady red light |1.3.1b| | 2 |
| Rear Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 2 |