Model Reports 4 min read Updated 18 Oct 2026

Audi TT 2011: reliability & common MOT faults

In 2025, 75 in every 100 first MOTs on a 2011 Audi TT were passes. Most common reason for a fail: Anti-roll bar linkage ball joint dust cover (front).

Summary

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

At a glance

How 6,029 first tests went in 2025.

Passed first time
75 in every 100
Did not pass first time
25 in every 1001,508 failed first-attempt tests
The typical car
14 yearsabout 89,034 miles
First tests counted
6,029

What failed most often

  1. Anti-roll bar linkage ball joint dust cover (front)14 in every 100 failed tests
  2. Tyre condition (front)11 in every 100 failed tests
  3. Coil spring (front)9 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 TT vehicles in 2025, not a prediction that any one car will have them. Faults are grouped by part of the car. They come from MOT defect codes, not manufacturer bulletins, recalls or a diagnosis of any one car.

Suspension

Four faults. The strongest is the suspension arm (rear): 9.6 times as often as on similar cars.

Figures below are measured across the 1,508 failed first attempts in 2025 that had a mileage recorded, which allows a like-for-like comparison.

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.

Suspension arm (rear)

Failed on 86 first tests9.6 times as often as similar carsLikely evidence

What it means

A missing bump stop rubber is not a reason to fail a suspension arm. A component that is fractured, missing or likely to fail is graded Dangerous, and one excessively damaged or corroded is Major. On some vehicles, some highly stressed parts are thin pressed steel, and many of those have hollow box sections or up-facing areas that can collect road dirt and salt, so they get special attention.

Also noted as an advisory

Testers also noted it as an advisory, worn but not yet failing, on 205 first tests, 6.2 times as often as on similar cars.

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

Failed on 216 first tests3.7 times as often as similar carsLikely 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.

Anti-roll bar ball joint dust cover (front)

Failed on 61 first tests2.7 times as often as similar carsPossible 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.

Shock absorbers (rear)

Failed on 90 first tests2.1 times as often as similar carsPossible evidence

What it means

Slight seepage that leaves a film of fluid on a shock absorber does not fail it. Severe leakage, or damage so that it does not function, is Major. A shock absorber missing or likely to become detached is graded Dangerous, though a missing one is only rejected if shock absorbers were fitted as standard.

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

Brakes

One fault: electronic stability control, 3.7 times as often as on similar cars.

Electronic stability control

Failed on 50 first tests3.7 times as often as similar carsLikely evidence

What it means

An ESC warning lamp is failed only when the tester is certain it indicates an ESC malfunction, because the lamp takes various forms and the owner's handbook may need checking. The system is also called ESP, VDC or DSC, among many other names. Every failure row is Major, covering the lamp, wheel speed sensors, wiring, other components and the switch.

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

Seat belts and restraints

One fault: airbag warning light, 2.4 times as often as on similar cars.

Airbag warning light

Failed on 52 first tests2.4 times as often as similar carsPossible evidence

What it means

The airbag warning lamp (SRS MIL in DVSA's wording) is failed only if it indicates a system malfunction, which is Major. A lamp lit to show the passenger airbag is disabled is not to be regarded as a defect. Dashboard messages are not a defect in their own right, though they can help the tester confirm a malfunction.

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

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.

Flexible brake hoses (front)

Noted on 23 first tests2.2 times as often as similar carsElevated evidence

Suspension sub-frame (rear)

Noted on 144 first tests2.0 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
75in every 100
Passed on the first test.
Fixed at the station
3in every 100
Failed, then fixed at the test station the same day.
Failed
22in every 100
Did not pass, and were not fixed at the test station.

First-attempt pass 75.0% of 6,029 first tests (2025): only cars that passed first time count. Official-style pass 77.9%: cars fixed at the test station also count as a pass. The 3 fixed and the 22 not fixed make the 25 in every 100 that did not pass first time.

Petrol and diesel

First testsTypical mileagePassed first time, as testedPassed first time, same mileage
Petrol4,04081,612 miles7575
Diesel1,989107,918 miles7475

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.

40608010020002005201120152020Older carsNewer cars
406080100200020112020Older carsNewer cars

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

YearPassed first timeFirst tests
200061 in every 1001,374
200160 in every 1002,149
200260 in every 1003,272
200360 in every 1003,830
200461 in every 1003,905
200561 in every 1003,106
200660 in every 1002,550
200765 in every 1007,101
200868 in every 1006,518
200971 in every 1005,533
201071 in every 1006,044
2011 This car75 in every 1006,029
201281 in every 1005,350
201382 in every 1006,077
201481 in every 1003,781
201585 in every 1008,229
201687 in every 1008,819
201788 in every 1007,149
201889 in every 1003,934
201991 in every 1004,450
202092 in every 1002,875
202192 in every 1002,357
202292 in every 1002,500

If you are buying one

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

Mileage makes a modest difference on a 2011 Audi TT.

Of 2011 Audi TT vehicles with under 64,000 miles, 81 in every 100 passed their 2025 MOT first time. With 119,000 miles or more, 73 in every 100 did.

Under 64,0001,210 tests
81
64,000–81,0001,204 tests
74
81,000–97,000 Typical car1,188 tests
74
97,000–119,0001,227 tests
73
119,000 and over1,200 tests
73

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 64,00081,000–97,000119,000 and over
Anti-roll bar linkage ball joint dust cover (front)3.04.12.7
Tyre condition (front)1.62.63.2
Coil spring (front)2.43.11.7
Tyre tread depth (front)1.21.32.1
Shock absorbers (rear)1.21.31.8

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

When a car fails

43in every 100

of failed cars had one item to fix.

27in every 100

of failed cars had three or more items to fix.

6in 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 TT follows the pattern of the model years either side. Its main cause of failure was Anti-roll bar linkage ball joint dust cover (front), about 14 in every 100 failed tests. In 2025, 75.0% of 6,029 first MOTs on the 2011 Audi TT passed first time (PRS: items fixed at the station the same day, counted as a fail). The official-style rate including PRS is 77.9%. Among 1,508 failed first-attempt MOT tests (test year 2025), Suspension arm (rear) appears more often than on similar cars (5.7% of those tests; 86 observed failures; about 9.6× 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 TT at the first attempt were Anti-roll bar linkage ball joint dust cover (front) (14.3%), Tyre condition (front) (10.7%) and Coil spring (front) (9.4%), 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: Suspension arm (rear) (5.7% of those tests; 86 observed failures; about 9.6× more often than similar cars). These are statistical signals, not a diagnosis of any individual car.
Suspension arm (rear) shows up more often than on similar cars (5.7% of those tests; 86 observed failures; about 9.6× 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 TT include Suspension arm (rear), Anti-roll bar linkage ball joint dust cover (front), Electronic stability control. 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 TT (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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