| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 42 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 14 |
| Steering headbearing has excessive free play |2.2.2| | 14 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 12 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 10 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 10 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 9 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 9 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 8 |
| Riders seat insecure |6.2.1a| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 4 |
| Front suspension has inadequate damping effect. |2.3.6c| | 4 |
| Rear position lamp insecure |1.1.1c| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Nearside Steering lock stop ineffective |2.1.3| | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 3 |
| Registration plate issues | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Stop lamp insecure |1.3.3b| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 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 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Stop lamp not working off front or rear brake (4.3.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator incorrect colour white light to rear (4.4.3 (a)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced (6.1.1 (c) (i)) | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Riders seat insecure Does not latch securely. (6.2.5 (a) (ii)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Rear Gradient brake test indicates a binding brake |3.3.D1c| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Steering linkage has excessive free play |2.2.2| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 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 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Exhaust excessively deteriorated |7.1.1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Brake hose damaged | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Steering operation impeded by a fairing (2.1.4 (e)) | 1 |
| Steering operation restricted in free movement from lock to lock no stop lock (2.1.4 (c)) | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Brake lever insecure |3.1.2a| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Position lamp switch insecure |1.1.4b| | 1 |
| Offside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Offside Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 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 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Nearside Rear Brake lever insecure |1.1.2 |e| |i|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Shock absorber has negligible damping effect forks seized (5.3.2 (b)) | 1 |
| Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment spongy (1.1.15 (f)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Brake lever attachment screws loose |3.1.2b| | 1 |
| Rear Brake lever mounting insecure |3.1.2a| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Steering linkage locking device missing |2.1.3 |d|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Front Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies front |1.3.1a| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Position lamp likely to become detached rear light cluster insecure due to broken rear fender that it mounts too. |4.2.1 |c| |ii|| | 1 |
| Brake lever insecure left side switchgear loose,rotates on bar,so switches and lever moves. |1.1.2 |e| |i|| | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock offside lockstop damaged, steering to the right fender and headlight hits legshield before lock stop is reached. |2.1.4 |a|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |