| Most common failures | No# failures |
|---|
| Steering headbearing has excessive free play |2.2.2| | 63 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 42 |
| Headlamp aim out of alignment | 38 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 33 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 30 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 21 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 20 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 16 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 14 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Front Steering headbearing has excessive free play |2.2.2| | 12 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 10 |
| Registration plate lamp issues | 10 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 10 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 9 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 8 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 7 |
| Brake hose damaged | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 7 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 6 |
| Rear reflector on motorcycle obscured |1.4.2b| | 6 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Nearside Front Direction indicators not working |1.5.1c| | 6 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 5 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 5 |
| Brake hose excessively deteriorated | 5 |
| Front suspension has inadequate damping effect. |2.3.6c| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 5 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 4 |
| Offside Front Direction indicators not working |1.5.1c| | 4 |
| Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Rear reflector on motorcycle obscured |1.4.1| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 4 |
| Horn not working |1.7.3a| | 4 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 4 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Horn not working |7.7 |a| |ii|| | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 4 |
| Nearside Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Offside Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 3 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 3 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 3 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Upper Steering headbearing has excessive free play |2.2.2| | 3 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 3 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 3 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 3 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 3 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 3 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 3 |
| Nearside Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Rear wheel insecure |4.2.3b| | 2 |
| Indicator tell tale not operating correctly |1.5.2| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Steering linkage has excessive free play |2.2.2| | 2 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 2 |
| 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| | 2 |
| Fuel cap sealing washer torn |7.2.2c| | 2 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Riders seat insecure |6.2.5 |a| |ii|| | 2 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Registration plate issues | 2 |
| Nearside Brake lever has inadequate reserve travel rear brake |3.1.3b| | 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 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 2 |
| Front shock absorber seal failed and leaking oil both |2.3.3| | 2 |
| Nearside Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front suspension assembly excessive wear or free play in a front suspension component head stock |2.3.4| | 2 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 2 |
| Rear Brake lever is inoperative |3.1.3c| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |