MOT failure rates

Citroen C4 MOT failure rates: what fails, what to fix

What the DVSA MOT data shows for the Citroen C4. The most common failure categories and what each one typically costs to put right.

Updated 4th September 2026 DVSA data: Across 170,279 recorded MOT tests, 30.7% failed.

Citroen C4
Image via Wikipedia, CC-licensed.

TL;DR

The Citroen C4 is popular among UK drivers but has notable MOT failure rates, primarily due to issues with brakes, suspension, lighting, and emissions. Older models (8 years+) see increased failure rates, and repair costs can range from £50 to over £500 depending on the issue.

Common MOT Failure Categories

The most frequent reasons for a Citroen C4 to fail its MOT include brakes, suspension, lighting, and emissions. Brake system failures often involve worn pads or discs. Suspension issues can stem from worn shock absorbers or bushings. Lighting failures typically involve blown bulbs or faulty wiring, which are usually easy and cheap to fix.

Age-by-Age Failure Rates

MOT failure rates tend to increase as the Citroen C4 ages. Vehicles around 3-5 years old have a lower failure rate, often below 20%. However, this rate can climb to over 40% for models that are 8 years or older. Owners of older C4s should be prepared for more frequent repairs.

Quick Fixes vs Structural Issues

Many common failures are quick fixes. For example, replacing a bulb can be done in under an hour for a minimal cost. In contrast, structural issues such as corrosion can be serious and expensive to repair. These issues often arise in older models and can lead to hefty bills if not addressed early.

Cost Ranges for Repairs

Repair costs vary widely depending on the issue. Simple fixes like lighting can cost as little as £50. Brake repairs can range from £150 to £400, while suspension work may exceed £500. Emissions repairs can also be costly, particularly if the catalytic converter needs replacing.

What people are asking

What are common problems with the C4?

Common problems with the Citroen C4 include issues with its suspension system, electrical components, and brake system. Owners have reported that maintenance items like timing belt changes and the use of new or used Citroën C4 parts can significantly affect running costs.

Is the Citroën C4 a reliable car?

The Citroen C4 has received mixed reviews regarding its reliability. While some owners find it dependable, others have noted frequent electrical and mechanical issues, particularly in older models. Regular maintenance and timely repairs can help improve reliability.

Is the Citroën C4 a good car?

Many drivers appreciate the Citroen C4 for its comfort, practicality, and stylish design. However, potential buyers should be aware of the common issues that can arise, especially with older models. Test driving and thorough inspections are recommended before purchase.

Is the Citroën C4 expensive to maintain?

Citroën repair costs in the UK are generally considered mid-range, making them affordable compared with many premium brands. Minor repairs, such as brake pads, sensors, or suspension components, can cost around £100 to £250, while more complex mechanical or electrical issues may cost £400 to £800 or more.

What owners say

Many appreciate the spacious interior and smooth ride, making it a pleasant vehicle for longer journeys. Owners often highlight the comfort and practicality of the Citroen C4, noting that it is a good choice for families and daily commuting.

However, reliability concerns are frequently mentioned, particularly regarding electrical issues. Drivers have reported problems with central locking systems and air conditioning failures, which can be frustrating and costly to repair. Owners have also pointed out that suspension components can wear out faster than expected, leading to additional maintenance costs.

When it comes to value, buyers in UK communities have flagged that the Citroen C4 tends to depreciate faster than some competitors. This can make it an attractive option for those looking for a used vehicle, but it also means that owners should be diligent about maintenance to avoid costly repairs later on.

Some owners recommend being cautious about purchasing older models, as they are more prone to issues such as corrosion and wear on mechanical parts. Regular inspections and maintenance are essential, especially for models that are over eight years old.

Citroen C4 recall record

94 recalls have been issued for the Citroen C4, between 2005 and 2026.

  1. Alternator protection

    R/2026/073

    Issued 9 March 2026

    Affected vehicles may have been assembled with contact or with a reduced clearance between the Gasoline Particulate Filter pipe and the pole protection cap of the 48V Belt Starter Generator. There is a possibility of contact between these components leading to water infiltration and an electrical arch which could trigger a thermal event.

    Remedy:Replace the pole protection cap of the 48V Belt Starter Generator. Check the distance between the Gasoline Particulate Filter pipe and the pole protection cap of the 48V Belt Starter Generator and re‑position or replace the pipe if required.

    Affects cars built Oct 2023 to Jan 2026

  2. Emission recall – On Board Diagnostics

    R/2025/346

    Issued 18 August 2025

    Vehicles may be affected by incorrect performance of the On-Board-Diagnostics related to Selective Catalytic Reduction system and/or Diesel Particle Filter. The Malfunction Indicator Light (MIL) may not illuminate in the event of a malfunction and therefore does not comply with emission regulations.

    Remedy:Update the Engine Control Unit software to ensure compliance to regulations.

    Affects cars built Dec 2017 to Nov 2020

  3. Citroen C4 Citroen DS5 Driver Airbag (Takata)

    R/2025/300

    Issued 31 July 2025

    On affected vehicles the Takata airbag inflators may deteriorate over time. This may cause some inflators to rupture with too much force in a crash capable of causing serious injury or death in a worst-case scenario.

    Remedy:Replace Driver Airbag module. You are advised not to drive the vehicle.

    Affects cars built Feb 2010 to Sept 2013

  4. Citroen Fuel Pipe

    R/2025/283

    Issued 18 July 2025

    On affected vehicles there there may be loose connections between a high-pressure fuel pipe and the engine fuel rail which potentially could lead to a leak and risk of fire.

    Remedy:Retighten the affected connections.

    Affects cars built Oct 2023 to Apr 2025

90 older recalls not shown.

A recall applies to a build range, not to every car of this model. Check a registration to see whether one specific vehicle has an outstanding recall.

Citroen C4 MOT record

From 170,279 recorded MOT tests, 30.7% failed.

MOT pass and failure rates by year of first registration
RegisteredTestsFailedMedian mileage
202322411.2%22,534 mi
20225,09812.6%22,909 mi
20215,27815.9%31,097 mi
20203,58912.9%34,193 mi
20198,89518.6%44,219 mi
201812,26621.9%53,482 mi
201716,58626.5%62,169 mi
201625,49729.5%71,125 mi

Most common reasons for failure

  1. Tyre tread depth not in accordance with the requirements32.4%
  2. A suspension pin, bush or joint excessively worn26.2%
  3. Brake disc or drum excessively weakened, insecure or fractured14.9%
  4. a brake lining or pad worn below 1.5mm13.2%
  5. A tyre seriously damaged13.2%

Figures cover every Citroen C4 tested in the DVSA dataset, not this specific car. Check a registration for the actual history of one vehicle.

Citroen C4 official figures

Median across 24 variants on sale, petrol, petrol electric.

Combined economy
51.3 mpg
WLTP median across variants
CO2 emissions
125 g/km
Sets the first-year tax rate

Official figures for new cars. Real economy varies with driving, load and conditions.

Frequently asked questions

What are the most common reasons for a Citroen C4 to fail its MOT?

The most common reasons include issues with brakes, suspension, lighting, and emissions.

How do failure rates change with the age of the Citroen C4?

Older models tend to have higher failure rates, particularly from around 8 years onwards.

Are there quick fixes for common MOT failures?

Yes, many lighting and minor brake issues can be fixed quickly and cheaply.

What structural issues should I be aware of?

Common structural issues include corrosion on older models, which can be costly to repair.

Sources