| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 25 |
| Headlamp aim out of alignment | 19 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 8 |
| Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Offside Front Position lamp not working (4.2.1 (a)) | 3 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Stop lamp remains on when the brakes are released | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Offside Rear Position lamp not working (4.2.1 (a)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Registration plate issues | 2 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Road spring corroded so that its cross sectional area is reduced and seriously weakened (5.3.1 (b) (i)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect shock absorbers not operating correctly with no movement of shocks present. (5.3.2 (b)) | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Offside Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Wheel excessively distorted |5.2.2 |c| |i|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Stop lamp not working From front brake lever (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working rear lever (4.3.1 (a) (ii)) | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Floor brake test No brake control achieves an efficiency of 30% (1.2.2 (a) (i)) | 1 |
| Offside Rear Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Position lamp not working |4.2.1 |a|| | 1 |
| Rear Brake caliper damaged and braking performance affected (1.1.16 (a) (ii)) | 1 |
| Nearside Front Brake master cylinder defective but brake still operating rear brake lever not releasing properly (1.1.10 (b) (i)) | 1 |
| Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies Faulty front brake light switch |1.3.1a| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Shock absorber has negligible damping effect n/s and o/s rear (5.3.2 (b)) | 1 |
| Front All position lamps not working (4.2.1 (a)) | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Rear Stop lamp not working control (4.3.1 (a) (ii)) | 1 |
| Floor brake test indicates a sticking brake rear brake |3.3.C2c| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Front Brake grabbing severely |1.2.1 |c|| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake light switch |1.3.1a| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp not working control 2 (4.3.1 (a) (ii)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Stop lamp not working from rear control switch (4.3.1 (a) (ii)) | 1 |
| Handlebar mounting so insecure that steering is adversely affected top yoke / clamp (2.2.1 (a) (ii)) | 1 |
| Nearside Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Brake fluid reservoir fluid level significantly below minimum level |1.1.10 |d| |ii|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Horn not working |1.7.3a| | 1 |
| Rear Brake caliper insecurely mounted and braking performance affected |1.1.16 |c| |ii|| | 1 |
| Front Handlebar retaining device loose |2.2.1 |b| |i|| | 1 |
| Rear Valve stem seriously damaged rear valve split |5.2.3 |j|| | 1 |
| Central Rear Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced Rear spindle securing nut missing. (6.1.1 (b) (ii)) | 1 |
| Central Front Brake performance not tested (1.2.1 (g)) | 1 |
| Central Rear Brake performance not tested (1.2.1 (g)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Stop lamp lens defective such that the emitted light is adversely affected |4.3.1 |b| |ii|| | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp not working r/h brake switch |4.3.1 |a| |ii|| | 1 |
| Front Stop lamp not working front brake light switch not working (4.3.1 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Headlamp incorrect colour (4.1.4 (a)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Stop lamp not working Front brake light switch damaged. (4.3.1 (a) (ii)) | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake lining|s| less than 1.0 mm thick |1.1.13 |a|| | 1 |