Model Reports 5 min read Updated 18 Oct 2026

BMW 1 Series 2011: reliability & common MOT faults

In 2025, 67 in every 100 first MOTs on a 2011 BMW 1 Series were passes. Most common reason for a fail: Shock absorbers (front).

Summary

A 2011 BMW 1 Series passed first time about 1 in every 100 more often than the average of the 2010 and 2012 model years.

At a glance

How 19,761 first tests went in 2025.

Passed first time
67 in every 100
Did not pass first time
33 in every 1006,478 failed first-attempt tests
The typical car
14 yearsabout 105,341 miles
First tests counted
19,761

What failed most often

  1. Shock absorbers (front)12 in every 100 failed tests
  2. Headlight aim9 in every 100 failed tests
  3. Tyre tread depth (rear)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 BMW 1 Series 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

Two faults. The strongest is the shock absorbers (front): 5.4 times as often as on similar cars.

Figures below are measured across the 6,474 of 6,478 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.

Shock absorbers (front)

Failed on 783 first tests5.4 times as often as similar carsStrong 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.

Also noted as an advisory

Testers also noted it as an advisory, worn but not yet failing, on 610 first tests, 2.2 times as often as on similar cars.

Shock absorbers (rear)

Failed on 548 first tests3.0 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.

Tyres

One wear pattern: tyre tread depth (rear), 2.8 times as often as on similar cars.

Tyre tread depth (rear)

Failed on 573 first tests2.8 times as often as similar carsWear pattern

What it means

Only primary grooves count when tread depth is assessed: those holding the wear indicators, or cut as deep as those when new. Shallower secondary grooves are ignored. Tread depth below the minimum for the vehicle is Dangerous, and so is a pattern not visible over the whole tread, but that second row applies only to vehicles that need the lower minimum.

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.

Propeller shaft flexible couplings (rear)

Noted on 179 first tests34 times as often as similar carsElevated evidence

Transmission oil leaks (rear)

Noted on 38 first tests5.5 times as often as similar carsElevated evidence

Handbrake efficiency on trikes, quads and pre-1968 vehicles (roller test)

Noted on 26 first tests2.2 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
67in every 100
Passed on the first test.
Fixed at the station
7in every 100
Failed, then fixed at the test station the same day.
Failed
26in every 100
Did not pass, and were not fixed at the test station.

First-attempt pass 67.2% of 19,761 first tests (2025): only cars that passed first time count. Official-style pass 74.1%: cars fixed at the test station also count as a pass. The 7 fixed and the 26 not fixed make the 33 in every 100 that did not pass first time.

Petrol and diesel

First testsTypical mileagePassed first time, as testedPassed first time, same mileage
Diesel14,165114,958 miles6667
Petrol5,59481,752 miles7167

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.

4060801002005201120152020Older carsNewer cars
40608010020112020Older carsNewer cars

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

YearPassed first timeFirst tests
200461 in every 1001,046
200561 in every 1004,265
200662 in every 1006,355
200764 in every 1007,653
200865 in every 10012,308
200965 in every 10016,332
201066 in every 10019,698
2011 This car67 in every 10019,761
201266 in every 10026,485
201370 in every 10033,958
201473 in every 10028,931
201578 in every 10030,142
201679 in every 10030,546
201782 in every 10031,626
201883 in every 10025,832
201985 in every 10026,813
202088 in every 10023,203
202190 in every 10017,952
202291 in every 10013,102

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 BMW 1 Series.

Of 2011 BMW 1 Series vehicles with under 76,000 miles, 78 in every 100 passed their 2025 MOT first time. With 137,000 miles or more, 61 in every 100 did.

Under 76,0004,023 tests
78
76,000–96,0003,848 tests
67
96,000–115,000 Typical car4,093 tests
65
115,000–137,0003,814 tests
64
137,000 and over3,976 tests
61

Petrol or diesel?

Typical mileagePassed first time,
as tested		Passed first time,
same mileage
Diesel114,958 miles6667
Petrol81,752 miles7167

Figures are in every 100 first tests. Petrol cars look better on the raw figures only because diesel cars have done more miles (typically 114,958 against 81,752). 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 76,00096,000–115,000137,000 and over
Shock absorbers (front)2.24.55.1
Headlight aim1.43.13.6
Tyre tread depth (rear)1.43.24.0
Individual sidelight or tail light (front)0.83.14.0
Tyre condition (rear)2.02.53.1

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

When a car fails

36in every 100

of failed cars had one item to fix.

37in 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.

A 2011 BMW 1 Series passed first time about 1 in every 100 more often than the average of the 2010 and 2012 model years. In 2025, 67.2% of 19,761 first MOTs on the 2011 BMW 1 Series passed first time (PRS: items fixed at the station the same day, counted as a fail). The official-style rate including PRS is 74.1%. Among 6,478 failed first-attempt MOT tests (test year 2025), Shock absorbers (front) appears more often than on similar cars (12.1% of those tests; 783 observed failures; about 5.4× 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 BMW 1 Series at the first attempt were Shock absorbers (front) (12.1%), Headlight aim (8.9%) and Tyre tread depth (rear) (8.9%), 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: Shock absorbers (front) (12.1% of those tests; 783 observed failures; about 5.4× more often than similar cars). These are statistical signals, not a diagnosis of any individual car.
Shock absorbers (front) shows up more often than on similar cars (12.1% of those tests; 783 observed failures; about 5.4× 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 BMW 1 Series include Shock absorbers (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 BMW 1 Series (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.

Check any vehicle’s MOT history

Full MOT history, mileage records, and reliability insights for any UK vehicle.

Run a free check