| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 32 |
| Registration plate lamp issues | 19 |
| Brake hose excessively deteriorated | 6 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 6 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 5 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 5 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 5 |
| Registration plate issues | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Front Position lamp not working (4.2.1 (a)) | 5 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 4 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 4 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 4 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 3 |
| Front Position lamp not working |4.2.1 |a|| | 3 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 3 |
| Front Brake excessively binding |1.2.1 |f|| | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 3 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| All direction indicators not working |4.4.1 |a| |ii|| | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Brake hose damaged | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 2 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Horn sound not in accordance with requirements (7.7 (c)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Stop lamp not working rear control |4.3.1 |a| |ii|| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s Hi low wired up wrong way round |1.2.2b|ii|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Fuel tank leaking |6.1.3 |b| |i|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear suspension bush has excessive free play swinging arm bushes |2.4.A2a|i|| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride brake arm split pin missing |6.2.1h| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Stop lamp does not illuminate immediately a brake applies front control |1.3.1a| | 1 |
| Stop lamp remains on when the brake is released rear lever |1.3.1e| | 1 |
| Drive chain sprocket worn to excess both |6.2.1e| | 1 |
| Rear Plate brake test indicates a sticking brake |3.3.B1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain split link |6.2.1h| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear brake |1.3.1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride sprocket |6.2.1h| | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded caliper binding to excess, restricting free rotation of wheel |3.2.A1h| | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Rear Brake back plate insecure split pin missing |1.1.14 |d|| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Steering lock stop maladjusted |2.1.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil fork seal |2.3.3| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Rear Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Brake master cylinder leaking Inspection window perished and leaking |1.1.10 |b| |ii|| | 1 |
| Stop lamp not working With hand lever |4.3.1 |a| |ii|| | 1 |
| Steering operation restricted in free movement from lock to lock near side lock stop jams steering on full lock |2.1.4 |c|| | 1 |
| Front Direction indicator obviously incorrectly positioned Mandatory direction indicators must have minimum separation distances of:
solo motorcycles over 50cc ??? 300mm at the front and 240mm at the rear |4.4.3 |a|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Headlamp lens seriously defective Full of water |4.1.1 |b| |ii|| | 1 |
| Nearside Footrest insecure and badly bent |6.2.12 |a|| | 1 |
| Footrest missing Rubber missing |6.2.12 |a|| | 1 |
| Nearside Front Direction indicator missing |4.4.1 |a| |ii|| | 1 |
| Offside Front Direction indicator missing |4.4.1 |a| |ii|| | 1 |
| Front Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Roller brake test No brake control achieves an efficiency of 30% |1.2.2 |a| |i|| | 1 |
| Steering linkage locking device missing |2.1.3 |d|| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock lock stop missing |2.1.4 |b|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Nearside Handlebar grip insecure to handlebar left hand |2.2.1 |d| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Brake grabbing severely |1.2.1 |c|| | 1 |
| Front Brake component modification unsafe front brake lever snapped leaving inadequate leverage |1.1.21 |d| |i|| | 1 |
| Brake excessively binding |1.2.1 |f|| | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Brake component inadequately mounted split pin missing from brake arm |1.1.21 |c|| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Front Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Front Brake caliper damaged |1.1.16 |a| |i|| | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Fork yoke in such a condition that steering control is adversely affected |2.2.2 |d| |ii|| | 1 |
| Front Fuel cap ineffective |6.1.3 |b| |i|| | 1 |
| Front Footrest insecure |6.2.12 |a|| | 1 |
| Front Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Rear Drive chain sprocket so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Suspension component ball joint likely to become detached |5.3.4 |a| |ii|| | 1 |
| Offside Front Lower Brake hose leaking |1.1.12 |c|| | 1 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Offside Rear Footrest insecure |6.2.12 |a|| | 1 |
| Brake pedal not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Nearside Front Brake hose damaged and likely to fail split |1.1.12 |a|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Headlamp aim not tested machines engine cuts out when lights are turned on |4.1.2 |b|| | 1 |
| Front Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Handlebar fractured to the extent that detachment is likely bends & cracks (2.2.1 (c) (ii)) | 1 |
| Offside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Nearside Front Direction indicator lens defective such that the emitted light is adversely affected (4.4.1 (b) (ii)) | 1 |
| Direction indicator not working R/H side stuck on (4.4.1 (a) (ii)) | 1 |
| Brake excessively binding Front (1.2.1 (f)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Brake drum significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Offside Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Offside Footrest insecure (6.2.12 (a)) | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Stop lamp not working With front brake (4.3.1 (a) (ii)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Forks fractured FORK STOPS (2.2.2 (d) (i)) | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Stop lamp not working when operating rear brake (4.3.1 (a) (ii)) | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess sprocket carrier has excessive play/ware (6.1.7 (c) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the handling Swing arm distortion (2.4 (a)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Motorcycle structure is so deformed it is likely to adversely affect braking or steering (6.1.1 (a) (ii)) | 1 |
| Central Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Fork yoke in such a condition that steering control is adversely affected (2.2.2 (d) (ii)) | 1 |
| Handlebar restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Brake grabbing severely front and rear (1.2.1 (c)) | 1 |
| Front Brake master cylinder defective but brake still operating (1.1.10 (b) (i)) | 1 |
| Front Brake fluid not visible (1.1.10 (d) (iii)) | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Direction indicator light intensity significantly reduced (4.4.3 (a)) | 1 |
| Rear Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Rear Brake rod insecure (1.1.15 (c)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Front switch not working (4.3.2 (a) (iii)) | 1 |
| Nearside Rear Direction indicator light intensity significantly reduced (4.4.3 (a)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle cable incorrectly fitted & races on O/S lock (6.2.7 (a) (ii)) | 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 Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Drive chain sprocket excessively loose sprocket bolts loose allowing it to move on hub (6.1.7 (c) (i)) | 1 |
| Front Headlamp light source and lamp not compatible headlamp fitted with incorrect bulb effecting beam pattern (4.1.4 (c)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Front Upper Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Steering headbearing has excessive wear or free play top locking nut loose (2.2.2 (f) (i)) | 1 |
| Central Rear Stop lamp not working REAR BRAKE LIGHT NOT WORKING ON CONTROL ONE (4.3.1 (a) (ii)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Front Position lamp not working bulb fitted (4.2.1 (a)) | 1 |
| Nearside Chain guard insecure (6.1.7 (i)) | 1 |
| Nearside Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Central Front Headlamp aim projected beam image obviously incorrect Correct bulb fitted (4.1.2 (c)) | 1 |
| Central Front Steering headbearing has excessive wear or free play Adjusted (2.2.2 (f) (i)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Stop lamp not working Lever for brake light (4.3.1 (a) (ii)) | 1 |
| Rear Wheel spindle locking device ineffective wheel adjusters inafective (5.2.1 (d)) | 1 |
| Rear Footrest missing rear footrests seized (6.2.12 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Nearside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Horn not working switch missing (7.7 (a)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Shock absorber has a serious fluid leak Fork seal (5.3.2 (b)) | 1 |
| Rear Suspension component mounting modified so the suspension is likely to fail other components Fouling exhaust (5.3.3 (c) (ii)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Brake lever has restricted free movement front brake lever knotchy when applied (1.1.15 (e)) | 1 |
| Front Brake lever insecure front lever has a fixing bolt missing and lose (1.1.2 (e) (i)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Brake component insecure torque arm for rear brake not secure (1.1.21 (c)) | 1 |
| Offside Rear Direction indicator not working r/h indicators not flashing (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Offside Front Brake caliper insecurely mounted and braking performance affected Securing bush missing (1.1.16 (c) (ii)) | 1 |
| Front Brake performance not tested Unable to test due to insecurely mounted caliper (1.2.1 (g)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Offside Rear Brake rod insecure Split pin missing (1.1.15 (c)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Rear Brake lining(s) contaminated (1.1.13 (b)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Steering headbearing excessively stiff or notchy in the straight-ahead position. (2.2.2 (f) (i)) | 1 |