| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 56 |
| Rear reflector on motorcycle missing |1.4.1| | 51 |
| Registration plate issues | 22 |
| Headlamp aim beam image kick up to the offside |1.6| | 11 |
| Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 7 |
| Horn not working |1.7.3a| | 7 |
| 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| | 6 |
| Registration plate lamp issues | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Horn not working (7.7 (a)) | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Headlamp insecure |4.1.1 |c|| | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 2 |
| Offside Rear Footrest missing (6.2.12 (a)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Rear Stop lamp not working brake switch (4.3.1 (a) (ii)) | 1 |
| Rear Upper Rear reflector on motorcycle missing |1.4.1| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Brake performance not tested due to low pads (1.2.1 (g)) | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Steering lock stop maladjusted |2.1.3| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced sprocket retaining nut broken (6.1.1 (b) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect LED Bulb fitted (4.1.2 (c)) | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Lower Brake master cylinder leaking rear brake master cylinder - leaking (1.1.10 (b) (ii)) | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Lower Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Front Stop lamp does not illuminate by the operation of both brake controls switch (4.3.2 (a) (iii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Brake disc|s| insecure |3.2.A1g| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Stop lamp not working hand lever |4.3.1 |a| |ii|| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Wheel fixing loose (multiple fixings) (5.2.1 (a) (i)) | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Offside Front Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Fuel cap ineffective sealing washer missing |6.1.3 |b| |i|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected NOTCHED IN CENTRE POSITION |2.2.2 |f| |ii|| | 1 |
| Rear All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Horn not working (7.7 (a) (ii)) | 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 |
| Stop lamp remains on when the brakes are released | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Brake pedal cracked |3.1.2c| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock R/H lock restricted by fuel tank (2.1.4 (b)) | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Steering lock stop maladjusted |2.1.3| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Stop lamp not working from rear control (4.3.1 (a) (ii)) | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Footrest missing both pillion footrests |6.2.1a| | 1 |