| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 18 |
| Registration plate lamp issues | 15 |
| Rear reflector missing (4.8.2 (a) (ii)) | 10 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 7 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 5 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Stop lamp remains on when the brakes are released | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Registration plate issues | 4 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 4 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Headlamp aim not tested (4.1.2 (b)) | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 3 |
| Riders seat insecure (6.2.5 (a) (ii)) | 3 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 3 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 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 |
| Brake pedal anti-slip provision missing (1.1.2 (c)) | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Front Brake caliper damaged (1.1.16 (a) (i)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Brake disc contaminated (1.1.14 (b)) | 1 |
| Front Brake disc contaminated fork oil on disc (1.1.14 (b)) | 1 |
| Brake disc contaminated grease on disc (1.1.14 (b)) | 1 |
| Front Brake master cylinder insecure (1.1.10 (c)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort 50% (1.2.1 (e)) | 1 |
| Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock lock stops broken / missing (2.1.4 (b)) | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Lower Motorcycle structure joining/attachment plate or fastening insecure (6.1.1 (b) (i)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Position lamp lens seriously defective |4.2.1 |b|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Brake fluid significantly below minimum mark REAR BRAKE RESERVOIR (1.1.10 (d) (ii)) | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Rear Brake master cylinder insecure (1.1.10 (c)) | 1 |
| Offside Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Brake pedal pivot has excessive free play (1.1.1 (b)) | 1 |
| Rear Brake caliper inadequately mounted (1.1.16 (c) (i)) | 1 |
| Brake caliper damaged (1.1.16 (a) (i)) | 1 |
| Front Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Headlamp main beam affected by the operation of another lamp dip bean and high wrong way round |1.2.2c| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Stop lamp not working via rear brake |4.3.1 |a| |ii|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Brake disc significantly and obviously worn disc has excessive runout |1.1.14 |a| |i|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Rear Lower Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Offside Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Offside Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Front Brake clevis joint insecure (1.1.15 (c)) | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Motorcycle structure excessively damaged Numberplate bracket.Damaged |6.1.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Stop lamp with a multiple light source more than 1/2 not functioning (4.3.1 (a) (ii)) | 1 |
| Rear Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 1 |
| Fuel tank insecure (6.1.3 (a) (i)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Footrest missing Pillion (6.2.12 (a)) | 1 |
| Fork yoke insecure top yoke loose (2.2.2 (d) (i)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Brake disc significantly and obviously worn dished (1.1.14 (a) (i)) | 1 |
| Upper Fork yoke insecure (2.2.2 (d) (i)) | 1 |
| Front Lower Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Drive chain horseshoe locking device likely to become detached missing |6.1.7 |j| |ii|| | 1 |
| Nearside Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Offside Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Brake component modification unsafe Brake hose |1.1.21 |d| |i|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Clutch lever shortened so it cannot be readily operated |6.2.7 |b|| | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Rear Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Rear position lamp missing no number plate light/ missing? |1.1.1a| | 1 |
| Nearside Shock absorber has a serious fluid leak Fork seal (5.3.2 (b)) | 1 |
| Brake lever pivot has excessive free play (1.1.1 (b)) | 1 |
| Rear Brake pedal anti-slip provision missing and pedal very loose (1.1.2 (c)) | 1 |
| Front Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp Operating main beam switch extinguishes headlamps |1.2.2c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies Stop lamp does not illuminate until rear brake pedal is fully depressed |1.3.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 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 |
| Stop lamp not working both brakes (4.3.1 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear Brake disc|s| insecure |3.2.A1g| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected Engine revs hanging high on idle (6.2.7 (a) (ii)) | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride Drive chain |6.2.1h| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies front brake light switch |1.3.1a| | 1 |
| Rear suspension component cracked Lower shock absorber mounting broken |2.4.A.1a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Steering lock stop missing both lock stops missing from bottom yoke |2.1.3| | 1 |
| Rear Brake pedal is inoperative rear brake peg missing |3.1.3c| | 1 |
| Rear Rear suspension bush has excessive free play lower shock bush |2.4.A2a|i|| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Brake performance not tested unable to test brakes with rear peg missing |3.3| | 1 |
| Rear Rear wheel rotation likely to be impeded sensor on rear brake hanger loose |6.2.1b| | 1 |
| Position lamp switch insecure switch gear loose. |1.1.4b| | 1 |
| Nearside Front Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Central Rear Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |