Failure category
Other defects
Items that don't fit cleanly into the major buckets above.
Defect codes
101
Total fails
212,274
Defect codes in this category, ranked.
Sorted by total cars affected last year. Click any row for the full defect description plus the models most at risk.
- 01 76,096
Engine MIL illuminated indicating a malfunction
284 models affected
- 02 42,069
Lambda coefficient outside the default limits or the range specified by the manufacturer
195 models affected
- 03 35,886
Engine MIL illuminated indicating a malfunction
233 models affected
- 04 19,639
A battery insecure but not likely to fall from carrier
111 models affected
- 05 12,919
Audible warning inoperative
55 models affected
- 06 6,508
Number plate does not conform to the specified requirements
326 models affected
- 07 4,745
Warning device shows system malfunction
67 models affected
- 08 2,049
Number plate does not conform to the specified requirements
201 models affected
- 09 1,697
Fuel system leaking, or missing or ineffective filler cap
6 models affected
- 10 1,695
A transmission belt, chain, sprocket or pulley excessively loose or worn
116 models affected
- 11 1,624
Rate of flashing not between 60 and 120 times per minute
107 models affected
- 12 1,484
Audible warning not working
133 models affected
- 13 1,205
Smoke opacity levels exceed the manufacturer's specified limit
18 models affected
- 14 783
A footrest missing or insecure
60 models affected
- 15 659
Projected beam image is obviously incorrect
67 models affected
- 16 456
A transmission belt, chain, sprocket or pulley excessively loose or worn
35 models affected
- 17 409
ESC MIL indicates a system malfunction
15 models affected
- 18 403
Handlebar grip insecure to handlebar
61 models affected
- 19 329
Contaminated with oil, grease etc
49 models affected
- 20 248
A door will not open using the relevant control or close properly
4 models affected
- 21 138
Smoke opacity levels exceed the manufacturer's specified limit
3 models affected
- 22 126
Rate of flashing not between 60 and 120 times per minute
16 models affected
- 23 116
Fuel system leaking, or missing or ineffective filler cap
4 models affected
- 24 104
A transmission belt, chain, sprocket or pulley excessively loose or worn
10 models affected
- 25 83
Smoke opacity levels exceed default limit
7 models affected
- 26 66
A drive chain horseshoe locking device incorrectly fitted
4 models affected
- 27 57
A king pin loose in the axle beam
1 models affected
- 28 48
Number plate showing an incorrect registration
25 models affected
- 29 46
Number plate missing or so insecure that it is likely to fall off
10 models affected
- 30 46
Audible warning sound not in accordance with requirements
8 models affected
- 31 40
A transmission belt, chain, sprocket or pulley so loose or worn it is likely to fail
5 models affected
- 32 37
Number plate showing an incorrect registration
18 models affected
- 33 36
Number plate inscription missing or illegible
23 models affected
- 34 34
Missing break glass hammer (where required)
3 models affected
- 35 26
A throttle control functioning such that safe operation of the motorcycle is affected
7 models affected
- 36 24
A footrest missing or insecure
5 models affected
- 37 24
A throttle control not functioning correctly
9 models affected
- 38 23
Emission control equipment fitted by the manufacturer missing, obviously modified or obviously defective
2 models affected
- 39 21
A bonnet that cannot be safely secured in the closed position
1 models affected
- 40 19
A transmission belt or chain excessively tight
5 models affected
- 41 15
A transmission belt, chain, sprocket or pulley so loose or worn it is likely to fail
4 models affected
- 42 15
A rider’s seat missing or insecure
3 models affected
- 43 15
Number plate missing or so insecure that it is likely to fall off
13 models affected
- 44 12
An engine mounting/bracket severely damaged or deteriorated resulting in excessive movement
3 models affected
- 45 12
Fuel tank, pipe or hose insecure
2 models affected
- 46 11
Number plate missing or so insecure that it is likely to fall off
7 models affected
- 47 10
EPS MIL indicating a system malfunction
3 models affected
- 48 10
Rate of flashing not between 60 and 120 times per minute
2 models affected
- 49 9
A driver's seat insecure
2 models affected
- 50 9
Handlebar fouling on the fuel tank or bodywork on full lock
5 models affected
- 51 9
Air leak causing a noticeable drop in pressure or audible air leak
1 models affected
- 52 8
Fuel system leaking, or missing or ineffective filler cap
2 models affected
- 53 7
Smoke opacity levels exceed the manufacturer's specified limit
1 models affected
- 54 6
Actuator leaking and braking performance not affected
3 models affected
- 55 5
Rate of flashing not between 60 and 120 times per minute
2 models affected
- 56 5
Master cylinder leaking
4 models affected
- 57 5
Number plate inscription missing or illegible
3 models affected
- 58 5
Handlebar mounting insecure
2 models affected
- 59 4
Function of the switch impaired
1 models affected
- 60 4
A transmission belt, chain, sprocket or pulley so loose or worn it is likely to fail
1 models affected
- 61 4
Restriction in the movement of the handlebars from lock to lock
3 models affected
- 62 4
Restriction in the movement of the handlebars from lock to lock
3 models affected
- 63 4
An emergency exit sign missing
1 models affected
- 64 4
Fuel system leaking, or missing or ineffective filler cap
2 models affected
- 65 4
Rate of flashing not between 60 and 120 times per minute
1 models affected
- 66 4
Rate of flashing not between 60 and 120 times per minute
1 models affected
- 67 3
Master cylinder reservoir cap missing
2 models affected
- 68 3
A door will not open using the relevant control or close properly
2 models affected
- 69 3
Retractable step not operating correctly.
1 models affected
- 70 3
A 13 pin trailer socket not functioning correctly
3 models affected
- 71 3
Warning device shows system malfunction
3 models affected
- 72 3
Handlebar fouling on the fuel tank or bodywork on full lock
2 models affected
- 73 3
A driver's seat fore and aft adjustment mechanism not functioning as intended.
3 models affected
- 74 2
A pillion seat insecure
1 models affected
- 75 2
Emission control equipment fitted by the manufacturer missing, obviously modified or obviously defective
1 models affected
- 76 2
Number plate inscription missing or illegible
1 models affected
- 77 2
A cab step or step ring insecure
1 models affected
- 78 2
A handgrip or footrest missing or insecure
1 models affected
- 79 2
Master cylinder insecure
1 models affected
- 80 2
An obvious leak from any part of the system
1 models affected
- 81 2
Contaminated with oil, grease etc
1 models affected
- 82 1
Lever or pedal pivot too tight
1 models affected
- 83 1
Actuator leaking and braking performance affected
1 models affected
- 84 1
Restriction in free movement of the braking system
1 models affected
- 85 1
abnormal movement of levers indicating maladjustment or excessive wear
1 models affected
- 86 1
Lever or pedal pivot has excessive wear or free play
1 models affected
- 87 1
Number plate inscription missing or illegible
1 models affected
- 88 1
track rod or drag link ends seriously misaligned
1 models affected
- 89 1
abnormal movement of levers indicating maladjustment or excessive wear
1 models affected
- 90 1
Actuator insecure or inadequately mounted and braking performance not affected
1 models affected
- 91 1
A door will not open using the relevant control or close properly
1 models affected
- 92 1
Bumper insecure or with damage likely to cause injury when grazed or contacted
1 models affected
- 93 1
Cable, rod or joint insecure
1 models affected
- 94 1
A door hinge, catch or pillar missing or insecure
1 models affected
- 95 1
Cable, rod or joint insecure
1 models affected
- 96 1
A door will not open using the relevant control or close properly
1 models affected
- 97 1
A bonnet seriously at risk of opening inadvertently
1 models affected
- 98 1
A transmission joint, belt or chain excessively worn
1 models affected
- 99 1
Emission control equipment fitted by the manufacturer missing, obviously modified or obviously defective
1 models affected
- 100 1
A transmission belt, chain, sprocket or pulley so loose or worn it is likely to fail
1 models affected
- 101 1
Handlebar so insecure it is likely to become detached
1 models affected
Brands most affected.
Total category-fails across each manufacturer's tested fleet. High-volume brands naturally lead — read alongside their model pass-rates.