| Most common failures | No# failures |
|---|
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 20 |
| Headlamp aim out of alignment | 16 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 16 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 9 |
| Registration plate lamp issues | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Registration plate issues | 8 |
| Stop lamp remains on when the brake is released |1.3.1e| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 5 |
| Handlebar mounting clamp loose |2.1.1a| | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Horn not working |1.7.3a| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Handlebar deformed |2.1.1b| | 3 |
| Nearside Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 2 |
| Nearside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 2 |
| Offside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Nearside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Offside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Nearside Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Offside Rear position lamp incorrect colour |1.1.2b| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Front Direction indicator missing |1.5.1a| | 2 |
| Rear Stop lamp missing |1.3.3a| | 2 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 2 |
| Steering linkage has excessive free play |2.2.2| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Nearside Steering headbearing has excessive free play |2.2.2| | 2 |
| Offside Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Headlamp aim headlamp deteriorated and function impaired LED bulbs fitted and no light is being emitted enough to reach beam setter or road. |1.2.3a| | 2 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear suspension has an inadequate repair of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Front Direction indicator not working |1.4.A.2c| | 1 |
| Offside Rear Direction indicator not working |1.4.A.2c| | 1 |
| Stop lamp not working |1.2.1b| | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake caliper insecurely mounted and braking performance affected |1.1.16 |c| |ii|| | 1 |
| Decelerometer brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Offside Front Upper Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Centre Rear Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Centre Rear Lower Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Offside Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Offside Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Nearside Front Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Suspension arm pin or bush excessively worn engine pivot arm bushes (5.3.4 (a) (i)) | 1 |
| Front Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Brake cable insecure | 1 |
| Rear Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Offside Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Brake lever has inadequate reserve travel Hand brake |3.1.3b| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Stop lamp does not illuminate immediately a brake applies faulty rear brake stop light switch |1.3.1a| | 1 |
| Rear suspension bearing has excessive free play front engine mounting pivots |2.4.A2a|i|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Rear Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Stop lamp showing white light to the rear |4.3.3 |a| |ii|| | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Nearside Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Offside Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Brake lever has insufficient reserve travel rear brake (1.1.2 (a)) | 1 |
| Stop lamp not working rear brake (4.3.1 (a) (ii)) | 1 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Nearside Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Steering linkage insecure to the extent there is excessive movement at the mountings |2.1.3 |a| |ii|| | 1 |
| Offside Front Steering linkage insecure to the extent there is excessive movement at the mountings |2.1.3 |a| |ii|| | 1 |
| Central Rear Engine mounting/bracket excessively loose |6.1.8 |a| |ii|| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Front Suspension arm attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Front Suspension component insecure and control of the motorcycle impaired (5.3.3 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 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 mirror on screen (2.1.4 (b)) | 1 |
| Indicator switch inoperative |4.4.2 |a| |ii|| | 1 |
| Central Front Steering linkage insecure to the extent there is excessive movement at the mountings (2.1.3 (a) (ii)) | 1 |
| Nearside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Central Rear Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Central Rear Inner Suspension arm pin or bush excessively worn engine to frame swingarm (5.3.4 (a) (i)) | 1 |
| Nearside Steering headbearing has excessive wear or free play needs adjustment. |2.2.2 |f| |i|| | 1 |
| Offside Steering headbearing has excessive wear or free play needs adjustment. |2.2.2 |f| |i|| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Stop lamp insecure |1.2.1a| | 1 |
| Offside Front Shock absorbers has a serious fluid leak | 1 |
| Stop lamp(s) not working front brake lever (4.3.1 (a) (ii)) | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Engine mounting/bracket damaged or deteriorated resulting in excessive movement |6.1.8 |a| |i|| | 1 |
| Engine mounting/bracket bracket damaged or deteriorated resulting in excessive movement |6.1.8 |a| |i|| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Stop lamp does not illuminate immediately a brake applies Both front and back |1.3.1a| | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Stop lamp does not illuminate immediately a brake applies From front brake lever |1.3.1a| | 1 |
| Rear suspension bearing has excessive free play engine mounts have excess movement |2.4.A2a|i|| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking engine mounts |6.1.1c| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Nearside Front wheel insecure |4.2.3b| | 1 |
| Rear Stop lamp(s) not working switch not operating (4.3.1 (a) (ii)) | 1 |
| Parking brake efficiency below requirements |3.7.C.1b| | 1 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 1 |
| Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Throttle operating incorrectly sticking |6.2.7 |a| |i|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Nearside Front Lower Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Brake cable excessively corroded hand brake cable |1.1.15 |b|| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Stop lamp showing white light to the rear (4.3.3 (a) (ii)) | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear suspension bush has excessive free play engine mounting |2.4.A2a|i|| | 1 |
| Brake hose excessively deteriorated | 1 |
| Nearside Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Offside Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear suspension component cracked |2.4.A.1a| | 1 |
| Offside Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Steering linkage ball joint worn to the extent there is a serious risk of detachment |2.1.3 |b| |ii|| | 1 |
| Front Steering damper insecure |2.1.4 |d| |i|| | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Engine mounting/bracket bracket damaged or deteriorated resulting in excessive movement Engine Bushes |6.1.8 |a| |i|| | 1 |
| Rear Shock absorber likely to become detached |5.3.2 |a| |ii|| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Nearside Front Lower Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies stop light not working |1.3.1a| | 1 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on not working rear near side |1.1.3a| | 1 |
| Nearside Front Lower Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Lower Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Lower Rear suspension component cracked |2.4.A.1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Nearside Front Valve stem seriously damaged |4.1.D.1e| | 1 |
| Rear Valve stem seriously damaged |4.1.D.1e| | 1 |
| Nearside Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Centre Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Upper Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Stop lamp(s) not working brake light not working on front brake control (4.3.1 (a) (ii)) | 1 |
| Brake cable damaged brake cable broken (1.1.15 (a)) | 1 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Front Steering linkage has excessive free play |2.2.2| | 1 |
| Headlamp missing |1.2.3a| | 1 |
| Offside Rear Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear suspension bush has excessive free play engine mounts |2.4.A2a|i|| | 1 |
| Offside Rear Stop lamp showing white light to the rear (4.3.3 (a) (ii)) | 1 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Nearside Stop lamp not working (4.3.1 (a) (ii)) | 1 |