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MOT performance

MOT failure “Washers: not working”: how common it is and which cars get it

“Washers: not working” (major defect, driver's view of the road) was recorded as a failure on 0.83% of UK MOT tests in 2023–2024: 540,949 tests, the number 22 most common failure item. It is 3.1 times as common at 10 years old (0.94%) as at 3 (0.31%). It is most common at 19 years old (1.45% of tests).

540,949 tests with this failure, 2023–2024

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At a glance

“Washers: not working” at a glance
FigureValueBasis
Share of MOT tests0.83%540,949 tests, 2023–2024
Rank among failure items#22by number of tests
Most common at19 years old1.45% of tests at that age
Models compared390models with enough tests

How it changes with age

Share of MOT tests failing on “Washers: not working” by age
Age at testShare of tests
3 years0.31%
5 years0.47%
7 years0.60%
10 years0.94%
12 years1.03%
15 years1.31%
18 years1.38%
19 years1.45%
20 years1.43%

By fuel

Diesel: 0.86% of tests; Petrol: 0.85% of tests; Electric: 0.27% of tests; Hybrid: 0.21% of tests. Fuel groups differ in age and mileage, so these raw shares are not like-for-like; the model tables below are.

Models that fail on it most often

Relative to cars of the same age and fuel (1.00 = national rate for this item). Only models with enough tests for the difference to be clear are ranked.

Models failing most often on “Washers: not working”
ModelTestsFailed on itvs similar cars
SsangYong Tivoli13,9412.17%+307%
MG HS15,4670.92%+243%
DS DS 368,0701.95%+243%
Citroen DS3146,8602.68%+190%
Ford Transit Courier51,1281.34%+174%
Fiat Bravo11,5633.36%+173%
SEAT Ibiza388,9642.17%+167%
Citroen Dispatch95,5782.03%+157%
Dacia Sandero205,8981.47%+151%
Peugeot Partner305,8291.87%+150%

Models that fail on it least often

Models failing least often on “Washers: not working”
ModelTestsFailed on itvs similar cars
Volkswagen Arteon14,4170.07%-82%
Mitsubishi Eclipse23,3610.08%-82%
Volvo XC40119,4490.06%-82%
Bentley Continental29,0700.22%-78%
Porsche Panamera14,1470.13%-78%
Volvo S9015,1030.10%-77%
Skoda Yeti152,1000.19%-76%
Volvo V9030,1090.11%-74%
BMW M424,1130.14%-74%
Audi A733,8890.19%-72%

Makes that stand out on this failure

Makes whose cars record this failure clearly more or less often than comparable cars (same age, mileage and fuel):

  • DS · 3.01× comparable cars
  • Dacia · 2.23× comparable cars
  • Citroen · 1.82× comparable cars

About this defect

The wording is DVSA's, from the MOT inspection manual. A high ratio for a model reflects its MOT record, which depends on maintenance and use as well as design. For one car, its own MOT history shows whether this has come up before.

Other common driver's view of the road failures

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UK number plate or 17-character VIN

About this data. These are MOT test results, not a measure of mechanical reliability: a car's MOT outcome reflects its condition on the day, which depends on how it has been maintained and driven as well as how it was built. Figures cover class 4 vehicles (cars and light vans), normal tests only (retests excluded), outcomes pass, fail and pass after rectification at the station; vehicles at least 2.5 years old at test. Tests from 2023-01-01 to 2024-12-30. “Compared with similar cars” means compared with the national rate for cars of the same age, mileage band and fuel. Contains public sector information licensed under the Open Government Licence v3.0. Makes and models are matched to 73 Auto's vehicle catalogue; tests that can't be matched are left out rather than guessed. See how the MOT figures are produced.