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Common problems by part

BMW M4 windscreen, wipers and mirrors problems

DVSA MOT tests 2022–2025 · 7,742 MOT tests · Updated

At 7 years, 1.0 in 100 MOT tests of the BMW M4 failed on windscreen, wipers and mirrors, against 3.4 for all class 4 vehicles the same age (all test years; 7,742 MOT tests) [1].

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  • Against all class 4 vehicles the same age: about average for all class 4 vehicles the same age (all test years), 80 MOT tests with a fail
  • By age: seen at 8 ages from 3 to 10 years, 47,927 MOT tests
  • Most common fail: Washers: provides insufficient washer liquid, 0.6 per 100 MOT tests

Figures are for the model as a whole, not for one car.

What the MOT tests show

What we know

1.0 fails per 100 MOT tests at 7 years, against 3.4 for all class 4 vehicles tested at 7 (all test years). That is about average.

Why it matters

A windscreen, wipers and mirrors fail stops the car passing until it is fixed; the most common one is rated major by DVSA.

What to check

Check the windscreen for chips or cracks in front of the driver, run the wipers and washers, and make sure both door mirrors are intact and adjust.

BMW M4 windscreen, wipers and mirrors fails by age

BMW M4 windscreen, wipers and mirrors fails per 100 MOT tests by ageSolid line: the BMW M4. Dashed line: all cars the same age. The table below lists every value.0243 years: 0.6 per 100 (all cars 2.8), 5,541 MOT tests34 years: 0.4 per 100 (all cars 3.6), 6,085 MOT tests45 years: 0.7 per 100 (all cars 3.4), 6,989 MOT tests56 years: 0.9 per 100 (all cars 3.3), 7,606 MOT tests67 years: 1.0 per 100 (all cars 3.4), 7,742 MOT tests78 years: 1.0 per 100 (all cars 3.7), 6,637 MOT tests89 years: 1.3 per 100 (all cars 4.0), 4,576 MOT tests910 years: 1.2 per 100 (all cars 4.4), 2,751 MOT tests10
Fails per 100 MOT tests by age, all first-use years pooled. BMW M4 All class 4 vehicles the same age
AgeMOT testsFails per 100All class 4 vehicles the same age
35,5410.62.8
46,0850.43.6
56,9890.73.4
67,6060.93.3
77,7421.03.4
86,6371.03.7
94,5761.34.0
102,7511.24.4

All first-use years of the BMW M4 pooled at each age, against all class 4 vehicles at that age over all 2022–2025 test years.

What fails in the windscreen, wipers and mirrors at 7 years

Fails

  • Washers: provides insufficient washer liquid: 0.6 fails per 100 MOT tests, all class 4 vehicles 1.0. Top up screenwash: estimated £2–£14 (0–0.1 h at £78/h (ONS local-garage repair quotes, 1,058 quotes from 65 garages, Sep 2025 to Aug 2026) + parts £2–£6) Windscreen washer provides insufficient washer liquid MOT fail
  • Wipers not clearing screen: 0.3 fails per 100 MOT tests, all class 4 vehicles 1.7. Replace wiper blade: estimated £15–£30 (0.1–0.2 h at £78/h (ONS local-garage repair quotes, 1,058 quotes from 65 garages, Sep 2025 to Aug 2026) + parts £7–£14) Windscreen wiper does not clear the windscreen effectively MOT fail

Advisories (not fails)

Top up screenwash cost

Repair figures are estimates, not quotes: how we estimate repair costs.

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  • Model risks for this year and fuel
  • What similar cars did at their next MOT
  • Repairs ahead
  • Viewing checklist

See a sample report

How to check on a test drive

Check the windscreen for chips or cracks in front of the driver, run the wipers and washers, and make sure both door mirrors are intact and adjust.

The most common advisory here in MOT records: Windscreen: damaged but not adversely affecting driver's view.

Check one BMW M4, not the average

The figures here describe BMW M4 cars as a group. These free tools answer for one car. Each line says what the tool reads.

  • Check a BMW M4's MOT history Every MOT test, fail item, advisory and mileage reading DVSA holds for that registration.
  • MOT advisory checker Paste an advisory or defect to read DVSA's wording, its grade and what tends to happen at the next MOT.

Other BMW M4 problems

Windscreen, wipers and mirrors on rival models

Questions people ask

Does the BMW M4 have more windscreen, wipers and mirrors problems than other cars?

1.0 in 100 MOT tests at 7 years, against 3.4 for all class 4 vehicles the same age: about average by our test (all test years; 7,742 MOT tests).

How common are BMW M4 windscreen, wipers and mirrors problems?

1.0 in 100 MOT tests at 7 years failed on windscreen, wipers and mirrors, against 3.4 for all class 4 vehicles the same age (all test years; 7,742 MOT tests).

What is the most common BMW M4 windscreen, wipers and mirrors fail?

0.6 in 100 MOT tests at 7 years: Washers: provides insufficient washer liquid (43 MOT tests with it).

Sources

  1. Driver and Vehicle Standards Agency, Anonymised MOT tests and results, 2022 to 2025. DVSA MOT data, Open Government Licence v3.0, 47,927 MOT tests. Accessed 7 Oct 2026.
  2. Office for National Statistics, Consumer price inflation, local price quotes (car repair items). ONS price quotes, series 610236. Accessed 7 Oct 2026.

Parts: against all class 4 vehicles at the same age, all 2022–2025 test years pooled, not adjusted for mileage. Breakdowns and non-MOT faults are not in this data. How we compare