| Most common failures | No# failures |
|---|
| Horn not working |1.7.3a| | 34 |
| Headlamp aim beam image kick up to the offside |1.6| | 32 |
| Headlamp aim out of alignment | 28 |
| Rear reflector on motorcycle missing |1.4.1| | 21 |
| Registration plate issues | 14 |
| Registration plate lamp issues | 10 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 10 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| 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| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Horn not working |1.7.3a| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Nearside Steering lock stop maladjusted |2.1.3| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Drive chain worn to excess tight spots (6.1.7 (c) (i)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 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 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Offside Handlebar deformed |2.1.1b| | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Rear Shock absorber has an excessively worn bush (5.3.2 (c)) | 2 |
| Inner Horn not working |1.7.3a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Central Lower Suspension component pin or bush excessively worn rear dogbone link (5.3.4 (a) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp insecure |1.3.3b| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Nearside Front Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Front Brake component is severely distorted |3.1.5| | 1 |
| Offside Front Brake component is severely distorted |3.1.5| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen Dips incorrect side |4.1.2 |a|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Motorcycle structure is so deformed it is likely to adversely affect braking or steering |6.1.1 |a| |ii|| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Handlebar grip insecure to handlebar left and right grips (2.2.1 (d) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Nearside Front Upper Headlamp switch faulty repaired left hand switch |1.2.4| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Centre Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Centre Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Drive chain fouling another component |6.2.1d| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Front Decelerometer brake test indicates a severely juddering brake |3.3.E1e| | 1 |
| Offside Front Brake disc insecure |1.1.14 |a| |ii|| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear 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 |
| Offside Rear 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 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies pedal switch i think |1.3.1a| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Nearside Front Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Centre Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Central Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Rear Upper Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen kick up to offside |4.1.2 |a|| | 1 |
| Nearside Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Offside Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Offside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Central Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Offside Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Offside Steering lock stop maladjusted |2.1.3| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort Brake fluctuation above 50% of brake effort |3.3.A1d| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Front Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| 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 |
| Nearside Horn control defective |1.7.2a| | 1 |
| Nearside Indicator switch defective |1.5.4| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Headlamp main beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |