| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 45 |
| Rear reflector on motorcycle missing |1.4.1| | 37 |
| Registration plate issues | 35 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Rear reflector missing (4.8.2 (a) (ii)) | 11 |
| Horn not working |1.7.3a| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| 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| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Riders seat insecure |6.2.1a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Centre Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Drive chain fouling another component |6.2.1d| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Fuel hose leaking |7.2.1a| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies foot brake |1.3.1a| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front Front position lamp missing |1.1.1a| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride sprocket bolt missing |6.2.1h| | 1 |
| Nearside Front Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Horn missing |1.7.1| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Inner Rear Lower Rear reflector on motorcycle missing (1.4.1) | 1 |
| Centre Riders seat insecure |6.2.1a| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| Nearside Front Upper Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Upper Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Upper Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Upper Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| 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 |
| Rear Brake component leaking fluid |3.2.B4| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Headlamp not working on main beam intermittent when handlebars moved. (4.1.1 (a) (ii)) | 1 |
| Brake master cylinder has a seized master cylinder pivot. not returning |3.2.B5| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Brake component cracked and seriously reduced in strength |3.2.A1| | 1 |
| Centre Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Nearside Steering lock stop maladjusted |2.1.3| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front suspension assembly component loose |2.3.1| | 1 |
| Nearside Front Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Lower Steering lock stop ineffective |2.1.3| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake hose fouling |3.2.B3b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Offside Front Steering lock stop ineffective |2.1.3| | 1 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Rear Built up wheel has a bolt/s missing |4.2.1c| | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Position lamp switch insecure (4.2.2 (b)) | 1 |
| Fork yoke insecure (2.2.2 (d) (i)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 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 |
| Central Front Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Centre Rear Upper Rear position lamp does not illuminate immediately when it is switched on (1.1.3a) | 1 |
| Offside Rear Lower Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Rear reflector on sidecar missing (1.4.1) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front shock absorber seal failed and leaking oil (2.3.3) | 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 |
| Position lamp not working front and rear (4.2.1 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Central Rear Upper Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Offside Rear Upper 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 |
| Central Front Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Registration plate lamp issues | 1 |