Ignition switch / cylinder failure
the ignition cylinder fails, which can leave you stranded
Check engine light: Off
This is this vehicle's standout problem: the ignition switch/cylinder fails, in the worst cases leaving drivers stranded and unable to start the car. It was the dominant theme in NHTSA complaints — a much bigger share of complaint volume than its 19% category share would suggest — and appears widely enough discussed that, per one representative complaint, "Ford Focus online forums are plastered with numerous complaints about the focus ignition lock cylinder failure." We haven't confirmed whether this is covered by a formal NHTSA safety recall specifically, or is a widely-reported wear issue without one — treat it as a real risk either way, and check your VIN in case it's recall-covered. A documented repair cost of $350 suggests a $280–$385 range. This is an electrical/mechanical ignition fault, not an engine issue, so it doesn't trigger a check-engine light on its own.
$280 – $385
formal recall status for this specific issue is NOT confirmed — several recall campaigns exist for this generation (airbags, door latches, locks) but none we found are specifically named as covering the ignition cylinder. Check your VIN regardless.
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AC evaporator core failure
a loss of AC cooling performance
Check engine light: Off
The most expensive repair reported for this generation is the AC evaporator core, documented at $1,395. It's a real but atypical cost: 67% of this category's repairs run under $100. This is a comfort-system fault, not an engine issue, so it doesn't trigger a check-engine light.
no specific mileage point given for the $1,395 figure — not widened into a range.
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Motor mount deterioration
noticeable engine vibration and rough idling
Check engine light: Off
A documented motor mount failure at $535 — we've widened that to a $430–$590 range to reflect the normal spread in labor rates and parts sourcing, though we don't have a specific mileage point for this case. The giveaway is engine vibration and rough idling rather than a warning light, so this doesn't typically trigger a check-engine light on its own.
$430 – $590
no specific mileage point given for the $535 base figure.
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Thermostat failure (stuck open or closed)
overheating or, alternatively, weak heat and worse fuel economy, depending on which way the thermostat sticks
Check engine light: On
A documented thermostat failure at $310, with a typical range of $250–$340 reflecting the normal spread in labor rates and parts sourcing. Symptoms depend on which way the thermostat sticks: stuck closed typically causes overheating, while stuck open typically shows up as weak heat and worse fuel economy. A thermostat-related coolant temperature issue commonly triggers a check-engine code, which is why the light is marked as typically on.
$250 – $340
no specific mileage point given for the $310 base figure.
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Water pump failure
a coolant leak, likely paired with cooling performance issues
Check engine light: Off
A documented water pump failure at $233, with a typical range of $185–$255 reflecting the normal spread in labor rates and parts sourcing. A coolant leak is the typical giveaway for this failure. On its own this doesn't usually trigger a check-engine light, unless it progresses to the point of overheating.
$185 – $255
no specific mileage point given for the $233 base figure.
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Rear door latch failure
Rear doors won't close properly
Check engine light: Off
A rear door latch failure is reported to prevent the rear doors from closing properly on this generation.
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Check engine light and hesitation or stumbling while driving
Check engine light, hesitation or stumbling while driving
Check engine light: On
Hesitation or stumbling while driving, accompanied by a check engine light, is reported on this generation.
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Warped front brake rotors causing steering wheel shimmy
Steering wheel shimmy or vibration when braking
Check engine light: Off
Warped front brake rotors are reported to cause steering wheel shimmy when braking.
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Rear bearing corrosion in winter/road-salt climates
Noise from the rear wheel area, worse in winter-road-salt climates
Check engine light: Off
Rear wheel bearing corrosion is reported in heavy-winter, road-salt climates on this generation. This affects the wheel bearings themselves, not the frame or subframe.
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Check engine light due to intake manifold control lever
Check engine light
Check engine light: On
An intake manifold control lever issue is reported to trigger the check engine light on this generation.
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Recurring coolant leak from plastic thermostat housing
Coolant leak from the thermostat housing area
Check engine light: Off
A recurring coolant leak from the plastic thermostat housing is reported. This is a leak from the housing itself, not the thermostat sticking open or closed.
This is a leak from the plastic housing itself, rather than the thermostat sticking open or closed.
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Damp passenger carpet with a dry floor mat
Passenger-side carpet is damp underneath a dry floor mat, suggesting a water leak rather than a spill
Check engine light: Off
A specific, recognizable water-intrusion symptom: damp carpet under a dry floor mat, suggesting a leak (such as a clogged cowl drain or door seal) rather than a spill.
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The most notable issue we found is ignition switch/cylinder failure — the ignition cylinder fails and can leave drivers stranded, documented at $350. This was the dominant theme in the complaint record, well beyond what its repair-category share would suggest. We haven't confirmed whether this is covered by a formal safety recall or is "just" a widely-reported wear issue — treat it as a real risk either way, and check your VIN in case it turns out to be recall-covered.