| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 23 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 23 |
| Stop lamp remains on when the brakes are released | 14 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 11 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 10 |
| Registration plate issues | 9 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 9 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 9 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 8 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 8 |
| Front Brake excessively binding (1.2.1 (f)) | 7 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 7 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 6 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 6 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 6 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 5 |
| Registration plate lamp issues | 5 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 5 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 4 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 4 |
| Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 3 |
| Dipswitch does not operate immediately when selected on main beam |4.1.3 |b|| | 3 |
| Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 3 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| 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)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Rear brake disc in such a condition that it is seriously weakened | 2 |
| Brake performance not tested (1.2.1 (g)) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Front Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 2 |
| Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Central Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Rear Stop lamp not working control |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Brake lever insecure |1.1.2 |e| |i|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Offside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Horn control not readily accesible. |1.7.2a| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Brake excessively binding very restricted wheel rotation |1.2.1 |f|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Stop lamp does not illuminate immediately a brake applies on rear brake control |1.3.1a| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Front Brake disc significantly and obviously worn bend |1.1.14 |a| |i|| | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Stop lamp not working Rear brake control |4.3.1 |a| |ii|| | 1 |
| Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Rear Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Central Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Steering operation restricted in free movement from lock to lock head bearings notchy |2.1.4 |c|| | 1 |
| Front Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Front Headlamp aim not tested main beam not working |4.1.2 |b|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected pitted when front wheel raised |2.2.2 |f| |ii|| | 1 |
| Steering headbearing has excessive wear or free play GOING TIGHT TO LOOSE LOCK TO LOCK. TOP BEARING |2.2.2 |f| |i|| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Rear Suspension arm pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected steering head bearings very notchy |2.2.2 |f| |ii|| | 1 |
| Steering headbearing has excessive wear or free play excessively notchy |2.2.2 |f| |i|| | 1 |
| Steering headbearing has excessive wear or free play notchy centre position |2.2.2 |f| |i|| | 1 |
| Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Nearside Front Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Front Brake lever has restricted free movement |1.1.15 |e|| | 1 |
| Rear Brake lever is so short that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Rear Brake master cylinder defective but brake still operating Excessive travel on lever before brake operates. |1.1.10 |b| |i|| | 1 |
| Front Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Front Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Nearside Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Headlamp aim not tested Main beam not working on the switch. (4.1.2 (b)) | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Brake lever insecure pivot loose & lock nut missing (1.1.2 (e) (i)) | 1 |
| Front Brake lever has restricted free movement (1.1.15 (e)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Brake excessively binding rear brake (1.2.1 (f)) | 1 |
| Central Rear Lower Suspension component pin or bush excessively worn mounting frame (5.3.4 (a) (i)) | 1 |
| Stop lamp not working Rear brake stop light (4.3.1 (a) (ii)) | 1 |
| Offside Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Shock absorber has negligible damping effect suspension has no movement [seized] (5.3.2 (b)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Nearside Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Stop lamp not working Front brake switch N/O (4.3.1 (a) (ii)) | 1 |
| Offside Rear Brake disc contaminated Rear brake caliper has plastic cloth jammed between disc and pads. (1.1.14 (b)) | 1 |
| Front Shock absorber has a serious fluid leak BOTH FORK SEALS FAILED (5.3.2 (b)) | 1 |
| Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Offside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Offside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Brake performance not tested (1.2.1 (g)) | 1 |
| Rear Brake performance not tested (1.2.1 (g)) | 1 |
| Rear Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition Silencer gasket missing (8.1.1 (a)) | 1 |
| Rear Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Shock absorber has a serious fluid leak BOTH (5.3.2 (b)) | 1 |
| Rear Shock absorber has negligible damping effect BOTH (5.3.2 (b)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Wheel hub excessively worn (5.2.1 (b) (i)) | 1 |
| Steering linkage ball joint worn to the extent there is a serious risk of detachment (2.1.3 (b) (ii)) | 1 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Offside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Stop lamp switch with a delay in operation lever (4.3.2 (a) (ii)) | 1 |
| Offside Rear Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Front Upper Stop lamp not working brake light switch inop (4.3.1 (a) (ii)) | 1 |
| Rear Shock absorber has a serious fluid leak both rear (5.3.2 (b)) | 1 |
| Brake performance not tested rear brakes are not eligible for the RBT test (1.2.1 (g)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Stop lamp not working from rear brake control (4.3.1 (a) (ii)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Nearside Rear Lower Suspension component pin or bush likely to become detached (5.3.4 (a) (ii)) | 1 |
| Offside Rear Lower Suspension component pin or bush likely to become detached (5.3.4 (a) (ii)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Nearside Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Motorcycle structure has excessive corrosion which adversely affects braking or steering centre stand excessively siezed (6.1.1 (c) (ii)) | 1 |
| Fuel cap ineffective cant open to check condition (6.1.3 (b) (i)) | 1 |
| Dipswitch does not operate immediately when selected on main beam light flickers (4.1.3 (b)) | 1 |
| Rear Brake performance not tested will damage brake tester if tried to test due to centre stand (1.2.1 (g)) | 1 |
| Brake hose excessively deteriorated | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Front Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Steering linkage component deformed (2.1.3 (c) (i)) | 1 |
| Nearside Front Direction indicator obviously incorrectly positioned *Mirror Insecure* (4.4.3 (a)) | 1 |
| Offside Front Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Rear Brake caliper insecure caliper worn (1.1.16 (c) (i)) | 1 |
| Front Brake disc contaminated oil (1.1.14 (b)) | 1 |
| Rear Brake pipe likely to become detached or damaged (1.1.11 (d) (ii)) | 1 |
| Rear Suspension arm ball joint likely to become detached (5.3.4 (a) (ii)) | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |