2021 · 3 years old at test · Petrol mostly

2021 Audi A4 MOT pass rate and common faults

7,348 MOT tests in 2024. 87.7% passed first time, compared with 87.6% for all cars the same age.

100About average
Passed first time87.7%
Failed or needed repairs12.3%
Typical mileage at test31,000

Most common reasons for failing

Share of all 7,348 tests where this item caused a failure.

  1. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords2.6%
  2. Tyres - condition: has ply or cords exposed2.3%
    260 marked dangerous
  3. Tread depth below requirements of 1.6mm2.2%
    264 marked dangerous
  4. Malfunction indicator lamp: inoperative or indicates a malfunction0.8%
  5. Tyres - condition: has a tear, caused by separation or partial failure of its structure0.8%
    88 marked dangerous
  6. Headlamp aim: too high0.7%
  7. Tyres - condition: has a bulge, caused by separation or partial failure of its structure0.6%
    54 marked dangerous
  8. Shock absorbers: has a serious fluid leak0.6%
  9. Brake pads: less than 1.5 mm thick0.3%
    39 marked dangerous
  10. Wipers: does not clear the windscreen effectively0.3%

Problem areas

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

  1. Tyres9.6%
  2. Lights & electrics1.5%
  3. Emissions & leaks1.0%
  4. Visibility (wipers, screen, mirrors)0.9%
  5. Brakes0.8%
  6. Suspension0.8%
  7. Seat belts & airbags0.4%
  8. Number plates & VIN0.3%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Tread depth below requirements of 1.6mm15.7%
  2. Brake pads: less than 1.5 mm thick5.3%
  3. Tyres - condition: has a tear, caused by separation or partial failure of its structure3.9%
  4. Non-component advisories: Nail in tyre3.3%
  5. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords3.3%

What this means if you are buying one

This model year is about as good as an average car its age. Before buying, check the area that fails most: tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords. Then look up the car's own MOT history on GOV.UK with its number plate, and look for repeat advisories.

← 2020 A4All A4 years

Questions

What is the MOT pass rate for a 2021 Audi A4?

In 2024, 87.7% of 2021 Audi A4 cars passed their MOT first time, across 7,348 tests. The average for all 3-year-old cars was 87.6%.

What are the most common MOT failures on a 2021 Audi A4?

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

Is the 2021 Audi A4 reliable at MOT time?

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