| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 36 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 18 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 12 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 10 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 10 |
| Registration plate lamp issues | 9 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 9 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 9 |
| Stop lamp remains on when the brakes are released | 8 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 8 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 8 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 7 |
| Rear reflector missing (4.8.2 (a) (ii)) | 7 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 7 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 7 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 6 |
| Rear reflector missing |4.8.2 |a| |ii|| | 6 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Horn not working (7.7 (a) (ii)) | 5 |
| Riders seat insecure (6.2.5 (a) (ii)) | 5 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 5 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 4 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 4 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 4 |
| Horn not working (7.7 (a)) | 4 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 4 |
| Horn not working |7.7 |a| |ii|| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 4 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 3 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Headlamp aim not tested |4.1.2 |b|| | 3 |
| 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|| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| All direction indicators not working (4.4.1 (a) (ii)) | 3 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 2 |
| Horn not working |1.7.3a| | 2 |
| 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 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Front Brake disc contaminated |1.1.14 |b|| | 2 |
| Rear Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 2 |
| 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 |
| Front Horn not working (7.7 (a) (ii)) | 2 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 2 |
| Rear Brake lagging in operation (1.2.1 (d)) | 2 |
| Front Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 2 |
| Brake hose damaged | 2 |
| Indicator switch inoperative |4.4.2 |a| |ii|| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Brake hose excessively deteriorated | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Brake caliper insecure |1.1.16 |c| |i|| | 2 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment Lever / switch loose on handlebars |1.1.15 |f|| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Engine mounting/bracket damaged or deteriorated resulting in excessive movement |6.1.8 |a| |i|| | 1 |
| Central Rear Lower Rear reflector missing rear reflector not visible due to number plate covering it (4.8.2 (a) (ii)) | 1 |
| Central Front Upper Steering operation restricted in free movement from lock to lock steering restricted from lock to lock (mainly to the left) (2.1.4 (c)) | 1 |
| Central Front Inner Steering headbearing has excessive wear or free play excessive play in head stock bearings (2.2.2 (f) (i)) | 1 |
| Offside Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Offside Front 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 seals (5.3.2 (b)) | 1 |
| Handlebar mounting so insecure that steering is adversely affected |2.2.1 |a| |ii|| | 1 |
| Steering operation restricted in free movement from lock to lock cables /brake hose catching on bodywork when turning handlebars (2.1.4 (c)) | 1 |
| Front Brake caliper inadequately mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Front Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Front Position lamp not working bulb fitted (4.2.1 (a)) | 1 |
| Rear Stop lamp not working BULB FITTED |4.3.1 |a| |ii|| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Nearside Front Upper Direction indicators not working |1.5.1c| | 1 |
| Central Rear Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Central Front Upper Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Brake lever has insufficient reserve travel brake does not lock wheel |1.1.2 |a|| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Valve stem seriously damaged rubber valve cracked (5.2.3 (j)) | 1 |
| Fuel hose leaking excessively or a risk of fire |6.1.3 |b| |ii|| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Valve stem seriously damaged Front |5.2.3 |j|| | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Roller brake test brake efficiency less than 27.5% overall (1.2.2 (a) (ii)) | 1 |
| Offside Front Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Front Motorcycle structure has a fracture which is likely to adversely affect braking or steering (6.1.1 (a) (ii)) | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced (6.1.1 (b) (ii)) | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Position lamp not working |4.2.1 |a|| | 1 |
| Steering headbearing has excessive wear or free play Upper and lower bearings (2.2.2 (f) (i)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Throttle operating incorrectly housing loose and operates when steering is turned (6.2.7 (a) (i)) | 1 |
| Offside Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Position lamp showing white light to the rear |4.2.3 |a| |ii|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Nearside Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Central Rear Stop lamp not working rear brake control inop |4.3.1 |a| |ii|| | 1 |
| Front Brake hose damaged and likely to fail (1.1.12 (a)) | 1 |
| Front Brake caliper inadequately mounted (1.1.16 (c) (i)) | 1 |
| Nearside Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Stop lamp not working When front brake applies (4.3.1 (a) (ii)) | 1 |
| Nearside Front Brake lever excessively corroded Rear brake lever broken (1.1.15 (b)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure Rear mudguard insecure (6.1.1 (b) (i)) | 1 |
| Upper Steering headbearing has excessive wear or free play A lot of movement in the forks with the front wheel raised, and on the floor. |2.2.2 |f| |i|| | 1 |
| Nearside Shock absorber has a serious fluid leak Forks also seriously corroded. |5.3.2 |b|| | 1 |
| Wheel alignment incorrect which adversely affects the steering Front wheel completely out of line with rear. |2.4 |a|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Nearside Rear Indicator tell tale not functioning |1.5.2| | 1 |
| Shock absorber has an excessively worn bush rear shock top bush |5.3.2 |c|| | 1 |
| Rear Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Offside Engine mounting/bracket bracket excessively loose |6.1.8 |a| |ii|| | 1 |
| Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 1 |
| Stop lamp showing white light to the rear Front & rear operated (4.3.3 (a) (ii)) | 1 |
| Direction indicator not working Left - front & rear (4.4.1 (a) (ii)) | 1 |
| Brake lever has insufficient reserve travel Rear Brake lever touches handlebars (1.1.2 (a)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Front Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Rear Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Nearside Rear Upper Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Brake lever pivot excessively worn (1.1.1 (b)) | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Floor brake test indicates a severely grabbing brake rear brake has noise posable shoes worn or sping loose |3.3.C2d| | 1 |
| Brake lever has abnormal movement of levers indicating excessive wear or maladjustment REAR |1.1.15 |f|| | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Shock absorber insecurely attached mounting bracket loose (5.3.2 (a) (i)) | 1 |
| Front Shock absorber has a serious fluid leak Both forks (5.3.2 (b)) | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork seal/leg (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak fork seal/leg (5.3.2 (b)) | 1 |
| Front Brake disc contaminated fork oil (1.1.14 (b)) | 1 |
| Rear Rear reflector missing obscured/covered by an learner plate (4.8.2 (a) (ii)) | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Front Upper Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Upper Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Brake grabbing severely |1.2.1 |c|| | 1 |
| Steering linkage insecure to the extent there is excessive movement at the mountings excess play at front wheel |2.1.3 |a| |ii|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Stop lamp not working |4.3.1 |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 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced wheel (6.1.1 (b) (ii)) | 1 |
| Rear Wheel hub damaged to the extent that wheel security is adversely affected (5.2.1 (b) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Rear Brake lever pivot excessively worn (1.1.1 (b)) | 1 |
| Offside Front Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Indicator switch inoperative Unable to cancel and turns on hazards inadvertently |4.4.2 |a| |ii|| | 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 |
| Nearside Rear Suspension arm pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Offside Rear Suspension arm pin or bush excessively worn Swing arm |5.3.4 |a| |i|| | 1 |
| Central Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Central Front Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Central Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Central Front Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases Snapped bolts in cylinder, and broken egr pipe on cylinder head. (6.1.2 (a)) | 1 |
| Handlebar restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Central Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Brake caliper insecurely mounted and braking performance affected |1.1.16 |c| |ii|| | 1 |
| Rear Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Offside Rear Lower Exhaust system insecure exhaust mountain bracket on engine cracked |6.1.2 |a|| | 1 |
| Nearside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Central Rear Wheel fractured |5.2.2 |a|| | 1 |
| Brake fluid reservoir fluid not visible |1.1.10 |d| |iii|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Rear Brake lever has insufficient reserve travel no reserve travel rear brake lever (1.1.2 (a)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls front brake not operating brake light (4.3.2 (a) (iii)) | 1 |
| Lower Fuel hose leaking excessively or a risk of fire pos carb leak |6.1.3 |b| |ii|| | 1 |
| Rear Stop lamp not working Brake switch faulty (4.3.1 (a) (ii)) | 1 |
| Central Front Headlamp aim projected beam image obviously incorrect Bulb filament distorted (4.1.2 (c)) | 1 |
| Front Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Front Brake master cylinder leaking reservoir leaking around window |1.1.10 |b| |ii|| | 1 |
| Rear Direction indicator incorrect colour rears faded badly |4.4.3 |a|| | 1 |
| Offside Rear Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| All direction indicators incorrect colour |4.4.3 |a|| | 1 |
| Rear reflector missing obscured (4.8.2 (a) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| Front Motorcycle structure has a fracture which is likely to adversely affect braking or steering mud guard |6.1.1 |a| |ii|| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Rear Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Upper Steering headbearing has excessive wear or free play steering head bearing loose |2.2.2 |f| |i|| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Exhaust has a major leak of exhaust gases has hole in (6.1.2 (a)) | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Rear Brake lagging in operation |1.2.1 |d|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected loose switch gear (6.2.7 (a) (ii)) | 1 |
| Rear Brake lever excessively worn |1.1.15 |b|| | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Position lamp missing (4.2.1 (a)) | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Brake lever pivot has excessive free play (1.1.1 (b)) | 1 |
| Nearside Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |