Model Reports 8 min read Updated 12 Jul 2026

Citroen C1 2011: reliability & common MOT faults

Elevated MOT failure patterns for the 2011 Citroen C1 include Hazard warning — Switch (~19.0× peers) and Linkage pins and bushes (front) (~12.1× peers). Based on UK DVSA open data for test year 2025 (5,047 failed first-attempt tests), compared with similar age and mileage peers. Available test years: 2024, 2025.

5,047 failed first-attempt tests · 12,693 first tests (test year 2025)

Standout pattern: Hazard warning — Switch — about 19.0× more often than on similar peer cars.

Key takeaways before you buy

Hazard warning — Switch: about 19.0× more often than similar cars
Linkage pins and bushes (front): about 12.1× more often than similar cars
Component mounting prescribed areas (rear): about 5.3× more often than similar cars

Common faults

These are MOT failure patterns that show up more often on this registration year than on similar cars of the same class, age band, and mileage in the same test year (leave-one-out peer comparison; whole model family excluded).

Statistical patterns from MOT defect codes — not manufacturer TSBs, recalls, or a diagnosis of any individual car. Fail and advisory patterns are kept separate.

Based on 5,047 failed first-attempt tests in test year 2025.

Hazard warning — Switch

This failure pattern appears about 19.0× more often than on similar peer cars — recorded on 245 failed first-attempt tests; 4.9% of failed tests for this model year.

Any · 245 failures · ×19.0 vs similar cars · 4.9% of failed first tests · Strong pattern — appears far more often than similar cars

Linkage pins and bushes (front)

This failure pattern appears about 12.1× more often than on similar peer cars — recorded on 124 failed first-attempt tests; 2.5% of failed tests for this model year.

Front · 124 failures · ×12.1 vs similar cars · 2.5% of failed first tests · Strong pattern — appears far more often than similar cars

Component mounting prescribed areas (rear)

This failure pattern appears about 5.3× more often than on similar peer cars — recorded on 270 failed first-attempt tests; 5.3% of failed tests for this model year.

Rear · 270 failures · ×5.3 vs similar cars · 5.3% of failed first tests · Strong pattern — appears far more often than similar cars

#	Fault pattern	Location	Failures	vs similar cars	Share of fails	Confidence
1	Hazard warning — Switch Lamps, reflectors and electrical equipment > Hazard warning > Switch	Any	245	×19.0	4.9%	Strong pattern — appears far more often than similar cars
2	Linkage pins and bushes (front) Suspension > Anti-roll bars > Linkage pins and bushes	Front	124	×12.1	2.5%	Strong pattern — appears far more often than similar cars
3	Component mounting prescribed areas (rear) Suspension > Component mounting prescribed areas	Rear	270	×5.3	5.3%	Strong pattern — appears far more often than similar cars
4	Rigid brake pipes (rear) Brakes > Rigid brake pipes	Rear	356	×4.7	7.1%	Likely common fault pattern
5	Service brake performance (rear) Brakes > Brake performance > Service brake performance > Plate brake tester > Service brake performance	Rear	101	×4.1	2.0%	Likely common fault pattern
6	Macpherson strut (front) Suspension > Macpherson strut > Macpherson strut	Front	114	×3.9	2.3%	Likely common fault pattern
7	Rear fog lamp Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp	Any	211	×3.7	4.2%	Likely common fault pattern
8	Service brake performance (rear) Brakes > Brake performance > Service brake performance > Rbt > Service brake performance	Rear	457	×3.6	9.1%	Likely common fault pattern
9	Rear fog lamp (rear) Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp	Rear	115	×3.3	2.3%	Likely common fault pattern
10	Wheel bearings (front) Suspension > Wheel bearings	Front	151	×3.1	3.0%	Likely common fault pattern

Only patterns that clear minimum sample and elevation thresholds are shown (at least 20 failures and 2.0× peer lift).

Advisories

Advisory items recorded on failed first-attempt tests that appear elevated versus peers. Advisories are not a fail rate — they flag issues noted at the test, often before they become failures.

#	Advisory pattern	Location	Notes	vs similar cars	Share	Confidence
1	Linkage pins and bushes Suspension > Anti-roll bars > Linkage pins and bushes	Any	25	×28.1	0.5%	Elevated vs peers
2	Linkage pins and bushes (front) Suspension > Anti-roll bars > Linkage pins and bushes	Front	567	×27.7	11.2%	Strong pattern — appears far more often than similar cars
3	Pins and bushes (front) Suspension > Anti-roll bars > Pins and bushes	Front	114	×8.5	2.3%	Possible elevated fault
4	Macpherson strut (front) Suspension > Macpherson strut > Macpherson strut	Front	184	×4.8	3.6%	Likely common fault pattern
5	Rigid brake pipes (rear) Brakes > Rigid brake pipes	Rear	926	×4.7	18.3%	Likely common fault pattern
6	Rigid brake pipes Brakes > Rigid brake pipes	Any	260	×3.8	5.2%	Likely common fault pattern
7	Road Wheels — Condition (front) Road Wheels > Condition	Front	226	×3.5	4.5%	Likely common fault pattern
8	Component mounting prescribed areas (rear) Suspension > Component mounting prescribed areas	Rear	145	×3.3	2.9%	Strong pattern — appears far more often than similar cars

FAQs

Is the 2011 Citroen C1 reliable?

We do not show a single reliability score for the 2011 Citroen C1 on this page. Among 5,047 failed first-attempt MOT tests (test year 2025), Hazard warning — Switch appears more often than on similar peer cars (about 19.0× more often than peers; 245 observed failures; 4.9% of failed tests). Treat this as a pre-purchase checklist from DVSA open data — not a guarantee for any individual car.

What common MOT faults stand out on the Citroen C1 2011?

Among failed first-attempt tests we surface patterns that appear more often than on similar peer cars. Top example: Hazard warning — Switch (about 19.0× more often than peers; 245 observed failures; 4.9% of failed tests). These are statistical signals, not a diagnosis of any individual car.

Why does Hazard warning — Switch stand out?

Hazard warning — Switch shows up more often than on similar peer cars (about 19.0× more often than peers; 245 observed failures; 4.9% of failed tests). That does not prove a causal design fault — age, mileage, and usage still matter. Treat it as a pre-purchase check point, not a manufacturer TSB.

What are common problems with the 2011 Citroen C1?

Common MOT problem areas for the 2011 Citroen C1 include Hazard warning — Switch, Linkage pins and bushes (front), Component mounting prescribed areas (rear). These are elevated versus similar peer cars where lift clears our floors — not a full list of every possible fault on an individual car.

How should I read advisories vs fails?

Advisories flag issues noted at the test and are not a fail rate. We show advisory patterns that look elevated versus peers among failed first-attempt tests, separate from common failure rows. Use them as early-warning checks, not as a pass/fail score.

What does this Citroen C1 2011 MOT report cover?

This page highlights elevated MOT failure patterns for the 2011 Citroen C1 (registration year) using UK DVSA open data for the selected test year. Patterns are ranked against similar age and mileage peers. It is a buyer checklist from MOT defect statistics — not a full service history or manufacturer TSB list.

Does this include engine and gearbox problems?

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.

What is PRS, and why does it count as a fail?

PRS means the vehicle 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.

About this data

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

PRS policy. PRS means the vehicle 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.

Peer baseline. We compare this model year with other class 4 cars of similar age and mileage in the same test year, excluding the whole model family so the car is not compared with itself (leave-one-out peer baseline).

Data years. Test years covered: 2024, 2025.

Limitations.

MOT tests do not cover engine internals, gearboxes, or many electronic modules — so this is not a full reliability score.
Common faults are inferred from MOT defect statistics, not manufacturer TSBs or recalls.
Matching on age and mileage reduces but does not remove every usage or maintenance difference between cars.
Pass rates and star scores appear only when those data marts are available; this page never invents them.

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

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