2020 · 4 years old at test · Petrol mostly

2020 BMW Z4 MOT pass rate and common faults

1,390 MOT tests in 2024. 90.2% passed first time, compared with 86.9% for all cars the same age.

104Above average
Passed first time90.2%
Failed or needed repairs9.8%
Typical mileage at test20,000

Most common reasons for failing

Share of all 1,390 tests where this item caused a failure.

  1. Tyres - condition: has ply or cords exposed4.7%
    120 marked dangerous
  2. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords2.0%
  3. Tread depth below requirements of 1.6mm1.0%
    21 marked dangerous
  4. Headlamp aim: too high0.7%
  5. Anti-roll bars - ball joint dust cover: ball joint dust cover no longer prevents the ingress of dirt0.4%
  6. Registration plates: does not conform to the specified requirements0.4%
  7. Tyres - condition: has a bulge, caused by separation or partial failure of its structure0.2%
    5 marked dangerous
  8. Washers: not working0.2%
  9. Road Wheels - condition: fractured0.1%
    2 marked dangerous
  10. Side repeaters: not working0.1%

Problem areas

Failure items found per 100 tests, by part of the car.

  1. Tyres8.2%
  2. Lights & electrics1.0%
  3. Suspension0.6%
  4. Visibility (wipers, screen, mirrors)0.6%
  5. Number plates & VIN0.4%
  6. Wheels0.3%
  7. Brakes0.1%
  8. Emissions & leaks0.1%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Tread depth below requirements of 1.6mm13.7%
  2. Tyres - condition: has a tear, caused by separation or partial failure of its structure5.0%
  3. Non-component advisories: Nail in tyre3.1%
  4. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords2.2%
  5. Tread depth: tread pattern not visible over the whole tread area when minimum depth required is 1.0mm1.7%

What this means if you are buying one

This model year does better than most cars its age, so it is a reasonable used buy on MOT record alone. Before buying, check the area that fails most: tyres - condition: has ply or cords exposed. Then look up the car's own MOT history on GOV.UK with its number plate, and look for repeat advisories.

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Questions

What is the MOT pass rate for a 2020 BMW Z4?

In 2024, 90.2% of 2020 BMW Z4 cars passed their MOT first time, across 1,390 tests. The average for all 4-year-old cars was 86.9%.

What are the most common MOT failures on a 2020 BMW Z4?

The most common failure reasons were tyres - condition: has ply or cords exposed; tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords; tread depth below requirements of 1.6mm. The biggest problem area was tyres.

Is the 2020 BMW Z4 reliable at MOT time?

Its MOT Rank score is 104, which is above average for a car of its age (100 means exactly average).