All generations and engines together · 127,193 MOT tests in the 2025 data · typical mileage at age 7: 70k
One of the worst family hatchbacks, by age and by mileage. Watch suspension and corrosion. A risky used buy. Check the MOT history for repeating suspension advisories before you go.
Split by first-registration year. Cars registered in a changeover year can belong to either generation.
Owner folklore from forums and the motoring press, with how well each report stands up. Most of it never shows up in an MOT, which is why this section exists at all.
The 2011-2018 C4's automated gearbox, badged EGS or EAT6 depending on trim, is the biggest reliability worry for auto buyers. Owners report clutch slip from around 40,000 miles, a jarring flat spot on downshifts under load, and cars occasionally dropping back to neutral and refusing to pick a gear. A full clutch pack replacement has been quoted at roughly £1,400-1,500. Doesn't apply to manual cars.
On the 2011-2018 car, the radio and navigation screen has been reported to reboot itself every three to four minutes, a fault Citroen has acknowledged as a known problem rather than a one-off complaint. Central locking and dashboard display glitches are also flagged on this generation. There's no reliable DIY fix; it usually needs a dealer software update or a unit swap.
A Technical Service Bulletin dated December 2016 covers water getting in around the passenger footwell seal on the 2011-2018 C4, usually showing up as a damp carpet, a musty smell, or an intermittent electrical fault after heavy rain. Left alone it can reach footwell wiring and connectors. A dealer can check the car against the TSB and reseal it, sometimes under goodwill on younger examples.
On the early (2004-2010) HDi diesels, a blocked EGR valve or clogged DPF is a recurring owner complaint, showing up as a flashing engine light, rough idle, and a noticeable loss of power, often on cars used mostly for short runs. Turbo failure has also been flagged on diesel variants from this era. There's no manufacturer campaign behind either fault; it reads as generic diesel wear rather than a factory defect, so treat it as maintenance risk rather than a guaranteed problem.
Worn shock absorbers and suspension bushes are a long-standing complaint on the 2004-2010 car, and turn up less often, but still occasionally, on the 2011-2018 model. The measured MOT data for this segment backs the general shape of this up: suspension is the standout fault category for family hatches as a class, and the C4 sits inside that pattern rather than outside it. A clonk over speed bumps or a vague, wandering feel at speed is usually bushes or links rather than anything structural.
The current (2020-on) C4 has its own share of post-warranty electrical trouble. One documented case saw a 3-year-old PureTech 130 EAT8 car develop an intermittent fault that took a dealer nine weeks and around £3,000 to trace, with the fuel pump, ECU and engine wiring loom replaced in turn before it was fixed. Owners more broadly report suspension, electrical and brake-related faults becoming more common once cars pass the three to four year mark and come off warranty. Too early to call a firm pattern, but worth budgeting for on an older example.
Ranked from this model’s own MOT record, then from what owners report.
Saveable checklistThe physical checks its own defect data says are worth your time, most telling first.
These judge the seller’s upkeep rather than the model, and they are where the haggling money is.
The physical checks its own defect data says are worth your time, most telling first.
These judge the seller’s upkeep rather than the model, and they are where the haggling money is.
The physical checks its own defect data says are worth your time, most telling first.
These judge the seller’s upkeep rather than the model, and they are where the haggling money is.
The physical checks its own defect data says are worth your time, most telling first.
These judge the seller’s upkeep rather than the model, and they are where the haggling money is.
Drawn from the reports above rather than the MOT data. These are the model-specific ones.
Computed from DVSA MOT results, all of Great Britain, 2025. Nothing here is opinion.
Share of tests where each item was recorded. The dark tick is the class average across all tracked models; bars are scaled within each group.
The rows that judge the model rather than its keeper. 51,382 tests in this band.
Tyres, pads and stone chips say more about how the car was driven and maintained than about how it was built.
Same segment (Family hatchbacks), best MOT record first. Compare before you shortlist.