MOT cost .

Failure category

Structure & seat-belts

Seat-belt anchorages, sub-frame integrity, vehicle structure corroded enough to lose rigidity. Less common, but the most expensive when they hit.

Defect codes

22

Total fails

71,212

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.

  1. 01

    Vehicle structure corroded to the extent that the rigidity of the assembly is seriously reduced

    82 models affected

    31,423
  2. 02

    The strength or continuity of the load bearing structure within 30cm of any seat belt anchorage (a 'prescribed area') is significantly reduced or inadequately repaired

    112 models affected

    24,745
  3. 03

    Body, cab or chassis excessively corroded at a mounting point

    43 models affected

    10,014
  4. 04

    Vehicle structure corroded to the extent that the rigidity of the assembly is seriously reduced

    25 models affected

    3,193
  5. 05

    Seat belt buckle missing, damaged or not functioning as intended

    65 models affected

    586
  6. 06

    A body panel or body component damaged or corroded and likely to cause injury when grazed or contacted, or insecure

    15 models affected

    332
  7. 07

    Seat belt not functioning as intended or of an incorrect type

    19 models affected

    308
  8. 08

    Seat belt retractor not functioning as intended

    6 models affected

    237
  9. 09

    A seat belt webbing or flexible stalk significantly stretched or weakened

    7 models affected

    148
  10. 10

    A seat belt or flexible stalk damaged

    12 models affected

    116
  11. 11

    Body, cab or chassis excessively corroded at a mounting point

    1 models affected

    26
  12. 12

    A body panel or body component damaged or corroded and likely to cause injury when grazed or contacted, or insecure

    3 models affected

    23
  13. 13

    A spoke missing, cracked, excessively loose, bent or corroded

    1 models affected

    17
  14. 14

    A main load-bearing structural member corroded to the extent that the rigidity of the assembly is seriously reduced

    2 models affected

    15
  15. 15

    Seat belt buckle missing, damaged or not functioning as intended

    3 models affected

    13
  16. 16

    A passenger seat with a defective structure or the backrest cannot be secured in the upright position.

    2 models affected

    4
  17. 17

    Seat belt buckle missing, damaged or not functioning as intended

    2 models affected

    3
  18. 18

    Forks or fork yoke fractured, insecure, excessively deformed or excessively corroded

    1 models affected

    3
  19. 19

    A spoke missing, cracked, excessively loose, bent or corroded

    1 models affected

    2
  20. 20

    Component excessively worn or corroded

    1 models affected

    2
  21. 21

    Forks or fork yoke fractured, insecure, excessively deformed or excessively corroded

    1 models affected

    1
  22. 22

    Handlebar fractured, excessively deformed or excessively corroded

    1 models affected

    1

Brands most affected.

Total category-fails across each manufacturer's tested fleet. High-volume brands naturally lead — read alongside their model pass-rates.