| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 50 |
| Registration plate issues | 15 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Drive chain excessively tight |6.2.1d| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Horn not working |1.7.3a| | 5 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Nearside Front Direction indicator insecure |1.5.3b| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Offside Front Outer Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension Exhaust rubbing swing arm. |2.4.A.3a| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on main beam |1.1.3a| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Valve stem seriously damaged perished (5.2.3 (j)) | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on (1.1.3a) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear switch sticking |1.3.1a| | 1 |
| Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment |1.1.15 |f|| | 1 |
| Rear Brake component modification adversely affecting braking performance |1.1.21 |d| |ii|| | 1 |
| Front Brake fluid reservoir fluid level dangerously low Below minimum level. |3.2.B1d| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Rear wheel rotation likely to be impeded Center stand is touching the drive chain |6.2.1b| | 1 |
| Central Front Upper Fuel cap missing (6.1.3 (b) (i)) | 1 |
| Central Front Lower Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Central Rear Lower Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Central Rear Wheel alignment incorrect which adversely affects the handling rear wheel alignment incorrect due to wrong chain adjustment re adjust (2.4 (a)) | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Drive chain worn to excess |6.2.1e| | 1 |
| Rear All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Front Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Central Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock |2.1.4 |a|| | 1 |
| Nearside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake caliper|s| insecure fitted incorectly |3.2.A1j| | 1 |
| Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 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 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front shock absorber seal failed and leaking oil r/h |2.3.3| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Rear Upper Motorcycle structure joining/attachment plate or fastening insecure |6.1.1 |b| |i|| | 1 |
| Brake caliper|s| insecure |3.2.A1j| | 1 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Stop lamp does not illuminate immediately a brake applies front application |1.3.1a| | 1 |
| Offside Front Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Front Shock absorber has a serious fluid leak fork seal failed (5.3.2 (b)) | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Rear Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Nearside Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Centre Front Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Registration plate lamp issues | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Offside Front Brake disc contaminated oil (1.1.14 (b)) | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Footrest insecure (6.2.12 (a)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Stop lamp not working not operating when front brake control applied (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working Does not operate off front brake |4.3.1 |a| |ii|| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Front Handlebar mounting so insecure that steering is adversely affected re seated clip on. (2.2.1 (a) (ii)) | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |