Model Reports 5 min read Updated 18 Oct 2026

Audi A1 2011: reliability & common MOT faults

In 2025, 64 in every 100 first MOTs on a 2011 Audi A1 were passes. Most common reason for a fail: Suspension arm pins and bushes (front).

Summary

The 2011 Audi A1 follows the pattern of the model years either side.

At a glance

How 15,034 first tests went in 2025.

Passed first time
64 in every 100
Did not pass first time
36 in every 1005,461 failed first-attempt tests
The typical car
14 yearsabout 98,080 miles
First tests counted
15,034

What failed most often

  1. Suspension arm pins and bushes (front)12 in every 100 failed tests
  2. Anti-roll bar linkage ball joint dust cover (front)11 in every 100 failed tests
  3. Coil spring (front)11 in every 100 failed tests

How we count this. Data: UK MOT open data, 2025. Only Class 4 cars on their first MOT of the year are counted. A car that fails and is fixed at the test station still counts as a fail in the first-attempt rate. These are raw results, not adjusted for age, mileage, or peer mix. The MOT does not test engine or gearbox internals.

Note:

These are patterns across 2011 Audi A1 vehicles in 2025, not a prediction that any one car will have them. Faults are grouped by part of the car. A wear pattern follows age and use more than the way the car was built. They come from MOT defect codes, not manufacturer bulletins, recalls or a diagnosis of any one car.

Suspension

Three faults. The strongest is the anti-roll bar ball joint dust cover (front): 3.3 times as often as on similar cars.

Figures below are measured across the 5,453 of 5,461 failed first attempts (99.9%) that recorded an odometer reading in 2025. Mileage is needed to compare like with like.

We only list faults with at least 20 failures and a rate of about 2.0 times that of similar cars, which keeps one-off results out of the list.

Anti-roll bar ball joint dust cover (front)

Failed on 267 first tests3.3 times as often as similar carsLikely evidence

What it means

A missing anti-roll bar ball joint dust cover is Major, and so is one that no longer prevents the ingress of dirt. A cover that is only severely deteriorated is Minor. DVSA uses one wording for the dust cover on any suspension joint.

Anti-roll bar linkage ball joint dust cover (front)

Failed on 624 first tests2.9 times as often as similar carsPossible evidence

What it means

A suspension joint dust cover that is severely deteriorated is Minor. It becomes Major once it is missing or no longer prevents the ingress of dirt, so what matters is whether it still keeps dirt out. DVSA words this for any suspension joint dust cover, and files it here under anti-roll bars.

Suspension arm pins and bushes (front)

Failed on 648 first tests2.4 times as often as similar carsPossible evidence

What it means

Pins and bushes on suspension arms fail as Major when they are excessively worn. They are graded Dangerous when likely to become detached. DVSA uses the same wording for a suspension joint.

Data: UK MOT open data, 2025. Compared with cars of the same age and mileage.

Brakes

One wear pattern: brake discs (rear), 2.6 times as often as on similar cars.

Brake discs (rear)

Failed on 176 first tests2.6 times as often as similar carsWear pattern

What it means

A brake disc or drum must be significantly worn before it is rejected, and being worn below the manufacturer's recommended limits is not a reason in itself. Significantly and obviously worn is Major, as is contamination with oil or grease. A disc or drum that is fractured, insecure, seriously weakened or missing is graded Dangerous.

Also noted as an advisory

Testers also noted it as an advisory, worn but not yet failing, on 823 first tests, 2.1 times as often as on similar cars.

Data: UK MOT open data, 2025. Compared with cars of the same age and mileage. Advisories count notes recorded on failed first tests only.

Advisories

Other things testers noted as worn or close to failing, more often than on similar cars.

An advisory is a note from the tester about something that has not failed yet. It is an early warning, not a fail. Advisories for the faults above are shown with those faults.

Handbrake lever

Noted on 26 first tests4.5 times as often as similar carsElevated evidence

Macpherson strut pins and bushes (front)

Noted on 121 first tests3.1 times as often as similar carsPossible evidence

Seat belt condition (front)

Noted on 113 first tests2.4 times as often as similar carsElevated evidence

Data: UK MOT open data, 2025. Counts cover advisories recorded on failed first tests only, compared with cars of the same age and mileage.

MOT pass rates

How first tests ended, and how the pass rates are counted.

Passed first time
64in every 100
Passed on the first test.
Fixed at the station
5in every 100
Failed, then fixed at the test station the same day.
Failed
31in every 100
Did not pass, and were not fixed at the test station.

First-attempt pass 63.7% of 15,034 first tests (2025): only cars that passed first time count. Official-style pass 69.1%: cars fixed at the test station also count as a pass. The 5 fixed and the 31 not fixed make the 36 in every 100 that did not pass first time.

Petrol and diesel

First testsTypical mileagePassed first time, as testedPassed first time, same mileage
Petrol9,17988,144 miles6564
Diesel5,854113,586 miles6164

Figures are in every 100 first tests. Cars with more miles usually fail more often, so the same-mileage figure gives every fuel the mileage mix of all the cars in this year.

Same model, other years

Passed first time in every 100, all tested in 2025.

406080100201120152020Newer cars
40608010020112020Newer cars

Newer cars are younger, so look for a jump rather than the climb.

YearPassed first timeFirst tests
201065 in every 1001,274
2011 This car64 in every 10015,034
201266 in every 10017,495
201367 in every 10021,298
201471 in every 10022,045
201574 in every 10022,636
201674 in every 10024,427
201777 in every 10021,991
201880 in every 10019,030
201984 in every 10019,545
202087 in every 10012,814
202189 in every 10013,504
202290 in every 10014,214

If you are buying one

What this year's MOT record means for the decision in front of you.

Mileage matters most on a 2011 Audi A1.

Of 2011 Audi A1 vehicles with under 71,000 miles, 73 in every 100 passed their 2025 MOT first time. With 125,000 miles or more, 58 in every 100 did.

Under 71,0002,939 tests
73
71,000–90,0003,002 tests
66
90,000–106,000 Typical car2,991 tests
63
106,000–125,0003,033 tests
59
125,000 and over3,059 tests
58

Petrol or diesel?

Typical mileagePassed first time,
as tested		Passed first time,
same mileage
Petrol88,144 miles6564
Diesel113,586 miles6164

Figures are in every 100 first tests. Petrol cars look better on the raw figures only because diesel cars have done more miles (typically 113,586 against 88,144). At the same mileage there is no clear difference between the two.

What to check at your mileage

How often each fault turned up on a failed first test, by the car's mileage. Read it as: what is likely to need looking at on a car like the one in front of you.

Under 71,00090,000–106,000125,000 and over
Suspension arm pins and bushes (front)2.54.15.5
Anti-roll bar linkage ball joint dust cover (front)3.34.54.3
Coil spring (front)4.43.53.8
Tyre condition (front)2.93.33.9
Headlight aim1.73.04.0

Faults per 100 first tests, by the car's mileage at the test.

When a car fails

34in every 100

of failed cars had one item to fix.

40in every 100

of failed cars had three or more items to fix.

9in every 100

of all first tests had a defect the tester marked dangerous (unsafe to drive away).

Every figure here is a first-attempt MOT rate from DVSA open data for this model line, for cars of this model year tested in 2025. Each mileage band holds a fifth of the tests. MOTs do not test engine or gearbox internals, so this is a pre-purchase checklist, not a full reliability score.

FAQs

Short answers about how to read this model-year guide.

The 2011 Audi A1 follows the pattern of the model years either side. Its main cause of failure was Suspension arm pins and bushes (front), about 12 in every 100 failed tests. In 2025, 63.7% of 15,034 first MOTs on the 2011 Audi A1 passed first time (PRS: items fixed at the station the same day, counted as a fail). The official-style rate including PRS is 69.1%. Among 5,461 failed first-attempt MOT tests (test year 2025), Anti-roll bar ball joint dust cover (front) appears more often than on similar cars (4.9% of those tests; 267 observed failures; about 3.3× more often than similar cars). There is no single reliability score here; this is a pre-purchase checklist built from DVSA open data, not a guarantee for any individual car.
Ranked by how often they were actually recorded, the items that most often failed a 2011 Audi A1 at the first attempt were Suspension arm pins and bushes (front) (11.9%), Anti-roll bar linkage ball joint dust cover (front) (11.4%) and Coil spring (front) (10.6%), each as a share of the year's failed first attempts. That is what goes wrong most often on the car. The common faults table shows a different measure: faults that are unusual compared with similar cars.
Among failed first-attempt tests we highlight patterns that appear more often than on similar cars. Top example: Anti-roll bar ball joint dust cover (front) (4.9% of those tests; 267 observed failures; about 3.3× more often than similar cars). These are statistical signals, not a diagnosis of any individual car.
Anti-roll bar ball joint dust cover (front) shows up more often than on similar cars (4.9% of those tests; 267 observed failures; about 3.3× more often than similar cars). That does not prove a design fault. Age, mileage, and how the car was used still matter. Treat it as a pre-purchase checkpoint, not a manufacturer service bulletin.
Common MOT problem areas for the 2011 Audi A1 include Anti-roll bar ball joint dust cover (front), Anti-roll bar linkage ball joint dust cover (front), Suspension arm pins and bushes (front). These are the faults that stand out compared with similar cars, not a complete list of what can go wrong on any individual car.
Advisories flag issues noted at the test and are not a fail rate. We show advisory patterns that appear more often than on similar cars among failed first-attempt tests, separate from common failure rows. Use them as early-warning checks, not as a pass/fail score.
This page highlights MOT failure patterns for the 2011 Audi A1 (registration year) using UK DVSA open data for the selected test year. Patterns are compared with cars of a similar age and mileage. It is a buyer checklist from MOT defect statistics, not a full service history or manufacturer service-bulletin list.
No. MOT tests do not cover engine internals, gearboxes, or many electronic modules. Patterns here come from MOT defect statistics only and should not be read as engine or gearbox reliability scores.

About this data

How this page is built and what it can (and can't) say.

These figures come from UK MOT open data for this model year. We surface common failure patterns against similar cars, not a full reliability score, and not a pass/fail verdict on any individual vehicle.

2024 2025

What we include

UK Class 4 cars only. Normal MOT tests (not retests); first test per vehicle per calendar year; results pass, PRS, or fail.

Same-day repairs

PRS means the car failed items that were fixed at the test station and then passed the same day. We count PRS as a first-attempt fail in headline rates so same-day repairs do not hide problems.

How we compare

We compare this model year with other Class 4 cars of similar age and mileage in the same test year. This model family is left out of the peer group so the car is not measured against itself.

What this does not cover

  • MOTs do not cover engine internals, gearboxes, or many electronics; this is not a full reliability score.
  • Common faults come from MOT defect stats, not manufacturer TSBs or recalls.
  • Age and mileage matching reduces, but does not remove, differences in how cars were used and maintained.
  • If the data for a car is too thin to say anything useful, we say so rather than guess.

Contains public sector information licensed under the Open Government Licence v3.0.

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