Model Reports 5 min read Updated 18 Oct 2026

Citroen C3 2012: reliability & common MOT faults

In 2025, 55 in every 100 first MOTs on a 2012 Citroen C3 were passes. Most common reason for a fail: Individual sidelight or tail light (front).

Summary

The 2012 Citroen C3 follows the pattern of the model years either side.

At a glance

How 13,621 first tests went in 2025.

Passed first time
55 in every 100
Did not pass first time
45 in every 1006,152 failed first-attempt tests
The typical car
13 yearsabout 77,738 miles
First tests counted
13,621

What failed most often

  1. Individual sidelight or tail light (front)16 in every 100 failed tests
  2. Drive shaft joints and boots (front)11 in every 100 failed tests
  3. Brake light10 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 2012 Citroen C3 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.

Lamps and electrical

Three faults. The strongest is the individual direction indicators (front): 4.3 times as often as on similar cars.

Figures below are measured across the 6,147 of 6,152 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.

Individual direction indicators (front)

Failed on 257 first tests4.3 times as often as similar carsLikely evidence

What it means

Direction indicators must be amber, though vehicles first used before a set date may have white at the front and red at the rear when the indicators are combined with stop or position lamps, and sequential or dynamic ones are not a reason to fail. A lamp that is missing, inoperative or has more than half of a multiple light source not functioning is graded Major. A flashing rate outside the permitted range is graded Minor.

Also noted as an advisory

Testers also noted it as an advisory, worn but not yet failing, on 176 first tests, 3.0 times as often as on similar cars.

Brake light (rear)

Failed on 632 first tests2.4 times as often as similar carsPossible evidence

What it means

All stop lamps missing or not working is graded Dangerous, and so is a stop lamp that stays on when the brakes are released. A stop lamp that is missing or not working is Major. On some vehicles with LED rear lamps, part of the stop lamp can go out when the rear fog lamp is lit, which is not regarded as a defect.

Individual direction indicators (rear)

Failed on 291 first tests2.2 times as often as similar carsPossible evidence

What it means

Direction indicators must be amber, though vehicles first used before a set date may have white at the front and red at the rear when the indicators are combined with stop or position lamps, and sequential or dynamic ones are not a reason to fail. A lamp that is missing, inoperative or has more than half of a multiple light source not functioning is graded Major. A flashing rate outside the permitted range is graded Minor.

Also noted as an advisory

Testers also noted it as an advisory, worn but not yet failing, on 291 first tests, 2.8 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.

Body and structure

Two faults. The strongest is the exhaust system (rear): 2.5 times as often as on similar cars.

Exhaust system (rear)

Failed on 221 first tests2.5 times as often as similar carsPossible evidence

What it means

Exhaust fumes causing a danger to health of persons on board are graded Dangerous, and so is a silencer likely to become detached. Fumes entering the cabin are Major. One or more missing or defective mountings does not necessarily make the exhaust insecure, since testers assess the overall security of the system.

Also noted as an advisory

Testers also noted it as an advisory, worn but not yet failing, on 510 first tests, 5.0 times as often as on similar cars.

Drive shaft joints and boots (front)

Failed on 678 first tests2.3 times as often as similar carsPossible evidence

What it means

A constant velocity boot that is only severely deteriorated is Minor. It is Major once it is missing, split or insecure so that it no longer prevents the ingress of dirt. A transmission joint excessively worn is Major, and graded Dangerous when it is so worn it is likely to fail.

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

Steering

One fault: track rod end (front), 2.2 times as often as on similar cars.

Track rod end (front)

Failed on 612 first tests2.2 times as often as similar carsPossible evidence

What it means

A steering ball joint with excessive wear or free play is Major, and one worn to the extent there is a serious risk of detachment is graded Dangerous. A dust cover that is damaged but still keeps dirt out is Minor, and one missing or no longer keeping dirt out is Major. Testers must tell wear from a joint's built-in clearance or spring loading.

Also noted as an advisory

Testers also noted it as an advisory, worn but not yet failing, on 221 first tests, 2.6 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.

All direction indicators

Noted on 25 first tests6.5 times as often as similar carsElevated evidence

Wheel bearings (rear)

Noted on 83 first tests3.9 times as often as similar carsPossible evidence

Flexible brake hoses (rear)

Noted on 169 first tests2.4 times as often as similar carsElevated evidence

Exhaust system (front)

Noted on 215 first tests2.3 times as often as similar carsPossible 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
55in every 100
Passed on the first test.
Fixed at the station
10in every 100
Failed, then fixed at the test station the same day.
Failed
35in every 100
Did not pass, and were not fixed at the test station.

First-attempt pass 54.8% of 13,621 first tests (2025): only cars that passed first time count. Official-style pass 64.6%: cars fixed at the test station also count as a pass. The 10 fixed and the 35 not fixed make the 45 in every 100 that did not pass first time.

Petrol and diesel

First testsTypical mileagePassed first time, as testedPassed first time, same mileage
Diesel7,44087,914 miles5355
Petrol6,18167,549 miles5754

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.

4060801002005201220152020Older carsNewer cars
40608010020122020Older carsNewer cars

Newer cars are younger, so look for a jump rather than the climb. A year earlier (2024), when these cars were a year younger, 54 in every 100 passed first time.

YearPassed first timeFirst tests
200247 in every 100638
200349 in every 1001,848
200450 in every 1002,335
200550 in every 1002,950
200652 in every 1003,522
200751 in every 1004,080
200850 in every 1003,871
200949 in every 1007,881
201051 in every 10015,915
201153 in every 10013,749
2012 This car55 in every 10013,621
201358 in every 10012,592
201461 in every 10013,132
201565 in every 10011,645
201667 in every 1008,425
201771 in every 10014,789
201876 in every 10014,697
201981 in every 10012,988
202087 in every 1007,568
202189 in every 1007,941
202292 in every 1006,874

If you are buying one

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

Mileage matters most on a 2012 Citroen C3.

Of 2012 Citroen C3 vehicles with under 54,000 miles, 69 in every 100 passed their 2025 MOT first time. With 106,000 miles or more, 46 in every 100 did.

Under 54,0002,747 tests
69
54,000–70,0002,643 tests
58
70,000–86,000 Typical car2,856 tests
52
86,000–106,0002,680 tests
49
106,000 and over2,690 tests
46

Petrol or diesel?

Typical mileagePassed first time,
as tested		Passed first time,
same mileage
Diesel87,914 miles5355
Petrol67,549 miles5754

Figures are in every 100 first tests. Petrol cars look better on the raw figures only because diesel cars have done more miles (typically 87,914 against 67,549). 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 54,00070,000–86,000106,000 and over
Individual sidelight or tail light (front)2.08.610.3
Drive shaft joints and boots (front)3.45.55.7
Brake light2.35.05.9
Track rod end (front)1.95.85.8
Suspension arm ball joint (front)1.14.96.8

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

When a car fails

27in every 100

of failed cars had one item to fix.

48in 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 2012 Citroen C3 follows the pattern of the model years either side. Its main cause of failure was Individual sidelight or tail light (front), about 16 in every 100 failed tests. In 2025, 54.8% of 13,621 first MOTs on the 2012 Citroen C3 passed first time (PRS: items fixed at the station the same day, counted as a fail). The official-style rate including PRS is 64.6%. Among 6,152 failed first-attempt MOT tests (test year 2025), Individual direction indicators (front) appears more often than on similar cars (4.2% of those tests; 257 observed failures; about 4.3× 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 2012 Citroen C3 at the first attempt were Individual sidelight or tail light (front) (15.9%), Drive shaft joints and boots (front) (11.0%) and Brake light (10.3%), 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: Individual direction indicators (front) (4.2% of those tests; 257 observed failures; about 4.3× more often than similar cars). These are statistical signals, not a diagnosis of any individual car.
Individual direction indicators (front) shows up more often than on similar cars (4.2% of those tests; 257 observed failures; about 4.3× 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 2012 Citroen C3 include Individual direction indicators (front), Exhaust system (rear), Brake light (rear). 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 2012 Citroen C3 (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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