If you are considering buying a used Ford C-Max, there are several major reliability issues worth knowing about first. Our garage database tracks 4 known faults for this model, 4 of them rated high severity. Every one below is a repair bill a seller has good reason not to mention.
Are you about to buy a lemon?
Sellers rarely admit these faults outright. Our database tracks 12 specific phrases sellers use in adverts to soft-pedal these exact issues. Paste any Ford C-Max advert and we will check it in seconds.
Electric Power Assisted Steering (EPAS) system failure, often due to the electric motor on the steering rack burning out. This can lead to sudden loss of power steering.
Rough guide
£1200-1400
Typical symptoms
Steering assist malfunction warning light on dashboard
Very heavy steering, especially at low speeds
Steering may temporarily return after a restart, then fail completely
Affected vehicles
Engines:
All
Typical mileage:
60000-95000 miles
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Transmission/ClutchHigh severity📝 Editorial
Premature clutch and Dual Mass Flywheel (DMF) failure, often accompanied by slave cylinder issues. Ford has acknowledged this as a pattern, sometimes offering free or partial replacements.
Rough guide
£900-1700
Typical symptoms
Clutch slip or burning smell, especially under load
Difficulty engaging gears, particularly 2nd from 3rd when warm
Juddering or knocking noise from the clutch area
Excessive clutch dust in bellhousing
Affected vehicles
Engines:
1.0 EcoBoost (Manual)
Typical mileage:
5000-50000 miles
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Engine/EmissionsHigh severity📝 Editorial
Localized overheating of the engine cylinder head may cause the cylinder head to crack, leading to a pressurized oil leak onto hot surfaces and potential engine compartment fire. Ford issued a service action/recall (R/2018/008) to address this.
Rough guide
£1700-3000 (engine repair/replacement)
Typical symptoms
Engine overheating warning
Coolant loss
Oil leak, particularly onto hot engine surfaces
Smoke or fire from engine compartment
Affected vehicles
Engines:
1.6 EcoBoost
Typical mileage:
40000-80000 miles
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Ford C-Max Mk3 (2014-2018) (2014-2015) problems
Engine/EmissionsHigh severity📝 Editorial
Engine control module calibration may not adequately detect an overheat condition, leading to engine overheating and in extreme cases, a breach of the oil sump and catastrophic loss of engine oil. Ford issued a recall (R/2018/53) for a software update.
Rough guide
£1000-2000 (sump/engine repair)
Typical symptoms
Engine overheating warning
Sudden loss of engine oil
Engine management light
Engine de-rate or limp mode
Affected vehicles
Engines:
2.0 Duratorq Diesel
Typical mileage:
30000-70000 miles
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Ford C-Max service intervals: cambelt, chain and gearbox oil
An overdue cambelt is the most expensive thing a seller can fail to mention on a used C-Max. These are the figures UK specialists work to.
Timing belt (cambelt)Belt
1.6 ECOBOOST, ST180
125,000 miles or 10 years, whichever comes first
The 1.6 EcoBoost (Sigma-based GTDi, also in the Fiesta ST180) uses a conventional DRY external belt, not a wet belt, despite some garage blogs lumping it in with the 1.0. The UK schedule is 10 years / 125,000 miles (200,000 km) while US manuals say 150,000 miles. This is an interference engine, so replace the water pump with the belt.
Always confirm against the vehicle handbook. Intervals vary by engine, and several manufacturers revised theirs after failures in service.
Repair costs are typical UK ranges, not quotes. Actual cost depends on condition and garage.Data last verified: September 2026
Where this Ford C-Max fault data comes from
If you used to check the Honest John “Good & Bad” section before the site closed in 2026, this page is where that information now lives. We rebuilt the Ford C-Max owner-report history from the archived Honest John dataset, added our own research, specialist and owner-club sources and DVSA recall data, and we keep it free. Each fault above is badged with its source. The same data feeds our free advert check, which reads a listing against every known fault for the exact engine and year.