| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 28 |
| Registration plate lamp issues | 27 |
| Rear reflector missing (4.8.2 (a) (ii)) | 21 |
| Registration plate issues | 14 |
| Rear Position lamp not working (4.2.1 (a)) | 14 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 9 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 8 |
| Rear Position lamp not working |4.2.1 |a|| | 7 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 6 |
| Headlamp insecure (4.1.1 (c)) | 6 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 6 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 6 |
| Rear reflector missing |4.8.2 |a| |ii|| | 6 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 5 |
| Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 5 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| 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)) | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 3 |
| Horn not working (7.7 (a)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Headlamp aim not tested |4.1.2 |b|| | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Front Brake grabbing severely (1.2.1 (c)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Motorcycle structure is fractured and structural rigidity is significantly reduced (6.1.1 (a) (i)) | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Offside Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 2 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front All direction indicators incorrect colour (4.4.3 (a)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 1 |
| Rear Stop lamp not working Both brakes (4.3.1 (a) (ii)) | 1 |
| Rear Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Rear Rear reflector defective or damaged by more than 50% of the reflecting surface covered by l plate |4.8.1 |a| |ii|| | 1 |
| Throttle operating incorrectly SWITCHGEAR SPINNING ROUND (6.2.7 (a) (i)) | 1 |
| Fuel cap ineffective CANT ACCESS FUEL CAP (6.1.3 (b) (i)) | 1 |
| Nearside Front Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Nearside Rear Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Offside Front Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Offside Rear Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Motorcycle structure is so deformed it is likely to adversely affect braking or steering bottom yoke (6.1.1 (a) (ii)) | 1 |
| Motorcycle structure is so deformed it is likely to adversely affect braking or steering frame (6.1.1 (a) (ii)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Steering operation impeded by a fairing (2.1.4 (e)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Fuel system component leaking Leak in the area of carburator (6.1.3 (b) (i)) | 1 |
| Rear Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Rear Brake lever has insufficient reserve travel spongy feeling possible air in system (1.1.2 (a)) | 1 |
| Central Rear Stop lamp light intensity significantly reduced (4.3.3 (a) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Exhaust has a major leak of exhaust gases Leak at manifold on barrel to exhaust flange. Barrel manifold/flange broken. (6.1.2 (a)) | 1 |
| Headlamp insecure Front panel loose, light attached to panel (4.1.1 (c)) | 1 |
| Nearside Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Exhaust silencer likely to become detached (8.1.1 (b) (ii)) | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Rear Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Rear reflector missing Completely covered by l plate |4.8.2 |a| |ii|| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Rear Brake performance unable to be tested (1.2.1 (g)) | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Brake disc significantly and obviously worn excessively distorted (1.1.14 (a) (i)) | 1 |
| Front Brake grabbing severely lever pivot/piston needs lube (1.2.1 (c)) | 1 |
| Rear Brake grabbing severely lever pivot/piston needs lube (1.2.1 (c)) | 1 |
| Exhaust has a major leak of exhaust gases connection to head (6.1.2 (a)) | 1 |
| Brake performance unable to be tested condition of rear pads (1.2.1 (g)) | 1 |
| Central Rear Lower Rear reflector missing rear reflector missing (added on test) (4.8.2 (a) (ii)) | 1 |
| Central Rear Stop lamp showing white light to the rear (4.3.3 (a) (ii)) | 1 |
| Rear Stop lamp emits other than a steady red light White Light (4.3.3 (a) (ii)) | 1 |
| Offside Front Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment Rear break lever (1.1.15 (f)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Front Forks excessively corroded left hand side (2.2.2 (d) (i)) | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Front Shock absorber has a serious fluid leak left side (5.3.2 (b)) | 1 |
| Rear reflector missing rear reflector obscured by Learner plate |4.8.2 |a| |ii|| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Position lamp not working REAR |4.2.1 |a|| | 1 |
| Rear Brake lever pivot has excessive free play bolt loose & nut (1.1.1 (b)) | 1 |
| Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment bolt loose nut missing (1.1.15 (f)) | 1 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Horn not working |1.7.3a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake performance not tested |1.2.1 |g|| | 1 |
| Rear Brake cylinder leaking and braking performance affected |1.1.16 |b| |ii|| | 1 |
| Rear Brake component insecure rear brake line insecure, likely to get caught in rear wheel. |1.1.21 |c|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Rear Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Position lamp lens seriously defective (4.2.1 (b)) | 1 |
| Steering linkage ball joint worn to the extent there is a serious risk of detachment (2.1.3 (b) (ii)) | 1 |
| Rear Stop lamp emits other than a steady red light rear bulb faded showing white light to rear (4.3.3 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Front Stop lamp emits other than a steady red light and rear (4.3.3 (a) (ii)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Front Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Rear Stop lamp showing white light to the rear (4.3.3 (a) (ii)) | 1 |
| Rear Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear reflector missing obscured under l plate (4.8.2 (a) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Offside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Central Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Central Rear Brake master cylinder insecure brake lever cannot be applied smoothly lubricate ok |1.1.10 |c|| | 1 |
| Central Rear Position lamp not working (4.2.1 (a)) | 1 |
| Central Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |