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Ford Fiesta VII faults

2 faults documented by at least two sources, listed by version then by mileage at onset when known.

Buy with care
Reliability
3.5/5

2 known faults

1.0 EcoBoost 100

  1. Wet belt of the 1.0 EcoBoost

    Severity 3/3 · Serious

    On the 1.0 EcoBoost, a belt (timing or oil pump belt depending on the version) runs in oil. As it degrades, it can release debris that clogs the oil pump pickup and causes oil pressure to drop, risking engine failure. An owner of a 2018 Fiesta 1.0 EcoBoost reports a belt that slipped and clogged the pickup at 140,000 km. Reliability guides advise requiring the invoices for servicing and belt replacement, and checking the oil level often.

    Versions
    1.0 EcoBoost 100, 1.0 EcoBoost 125, 1.0 EcoBoost 140, 1.0 EcoBoost mHEV 125, 1.0 EcoBoost mHEV 125 Powershift, 1.0 EcoBoost mHEV 155
    Onset
    not documented
    Repair
    not documented

  2. Cooling circuit leaks on the 1.0 EcoBoost

    Severity 2/3 · Costly

    The 1.0 EcoBoost is prone to coolant leaks: a fragile hose, a cracked water housing or expansion tank. The circuit can empty fairly quickly without warning, and the resulting overheating can damage the cylinder head and head gasket. A falling coolant level is the sign to watch for.

    Versions
    1.0 EcoBoost 100, 1.0 EcoBoost 125, 1.0 EcoBoost 140, 1.0 EcoBoost mHEV 125, 1.0 EcoBoost mHEV 125 Powershift, 1.0 EcoBoost mHEV 155
    Onset
    not documented
    Repair
    not documented

1.0 EcoBoost 125

  1. Wet belt of the 1.0 EcoBoost

    Severity 3/3 · Serious

    On the 1.0 EcoBoost, a belt (timing or oil pump belt depending on the version) runs in oil. As it degrades, it can release debris that clogs the oil pump pickup and causes oil pressure to drop, risking engine failure. An owner of a 2018 Fiesta 1.0 EcoBoost reports a belt that slipped and clogged the pickup at 140,000 km. Reliability guides advise requiring the invoices for servicing and belt replacement, and checking the oil level often.

    Versions
    1.0 EcoBoost 100, 1.0 EcoBoost 125, 1.0 EcoBoost 140, 1.0 EcoBoost mHEV 125, 1.0 EcoBoost mHEV 125 Powershift, 1.0 EcoBoost mHEV 155
    Onset
    not documented
    Repair
    not documented

  2. Cooling circuit leaks on the 1.0 EcoBoost

    Severity 2/3 · Costly

    The 1.0 EcoBoost is prone to coolant leaks: a fragile hose, a cracked water housing or expansion tank. The circuit can empty fairly quickly without warning, and the resulting overheating can damage the cylinder head and head gasket. A falling coolant level is the sign to watch for.

    Versions
    1.0 EcoBoost 100, 1.0 EcoBoost 125, 1.0 EcoBoost 140, 1.0 EcoBoost mHEV 125, 1.0 EcoBoost mHEV 125 Powershift, 1.0 EcoBoost mHEV 155
    Onset
    not documented
    Repair
    not documented

1.0 EcoBoost 140

  1. Wet belt of the 1.0 EcoBoost

    Severity 3/3 · Serious

    On the 1.0 EcoBoost, a belt (timing or oil pump belt depending on the version) runs in oil. As it degrades, it can release debris that clogs the oil pump pickup and causes oil pressure to drop, risking engine failure. An owner of a 2018 Fiesta 1.0 EcoBoost reports a belt that slipped and clogged the pickup at 140,000 km. Reliability guides advise requiring the invoices for servicing and belt replacement, and checking the oil level often.

    Versions
    1.0 EcoBoost 100, 1.0 EcoBoost 125, 1.0 EcoBoost 140, 1.0 EcoBoost mHEV 125, 1.0 EcoBoost mHEV 125 Powershift, 1.0 EcoBoost mHEV 155
    Onset
    not documented
    Repair
    not documented

  2. Cooling circuit leaks on the 1.0 EcoBoost

    Severity 2/3 · Costly

    The 1.0 EcoBoost is prone to coolant leaks: a fragile hose, a cracked water housing or expansion tank. The circuit can empty fairly quickly without warning, and the resulting overheating can damage the cylinder head and head gasket. A falling coolant level is the sign to watch for.

    Versions
    1.0 EcoBoost 100, 1.0 EcoBoost 125, 1.0 EcoBoost 140, 1.0 EcoBoost mHEV 125, 1.0 EcoBoost mHEV 125 Powershift, 1.0 EcoBoost mHEV 155
    Onset
    not documented
    Repair
    not documented

1.0 EcoBoost mHEV 125

  1. Wet belt of the 1.0 EcoBoost

    Severity 3/3 · Serious

    On the 1.0 EcoBoost, a belt (timing or oil pump belt depending on the version) runs in oil. As it degrades, it can release debris that clogs the oil pump pickup and causes oil pressure to drop, risking engine failure. An owner of a 2018 Fiesta 1.0 EcoBoost reports a belt that slipped and clogged the pickup at 140,000 km. Reliability guides advise requiring the invoices for servicing and belt replacement, and checking the oil level often.

    Versions
    1.0 EcoBoost 100, 1.0 EcoBoost 125, 1.0 EcoBoost 140, 1.0 EcoBoost mHEV 125, 1.0 EcoBoost mHEV 125 Powershift, 1.0 EcoBoost mHEV 155
    Onset
    not documented
    Repair
    not documented

  2. Cooling circuit leaks on the 1.0 EcoBoost

    Severity 2/3 · Costly

    The 1.0 EcoBoost is prone to coolant leaks: a fragile hose, a cracked water housing or expansion tank. The circuit can empty fairly quickly without warning, and the resulting overheating can damage the cylinder head and head gasket. A falling coolant level is the sign to watch for.

    Versions
    1.0 EcoBoost 100, 1.0 EcoBoost 125, 1.0 EcoBoost 140, 1.0 EcoBoost mHEV 125, 1.0 EcoBoost mHEV 125 Powershift, 1.0 EcoBoost mHEV 155
    Onset
    not documented
    Repair
    not documented

1.0 EcoBoost mHEV 125 Powershift

  1. Wet belt of the 1.0 EcoBoost

    Severity 3/3 · Serious

    On the 1.0 EcoBoost, a belt (timing or oil pump belt depending on the version) runs in oil. As it degrades, it can release debris that clogs the oil pump pickup and causes oil pressure to drop, risking engine failure. An owner of a 2018 Fiesta 1.0 EcoBoost reports a belt that slipped and clogged the pickup at 140,000 km. Reliability guides advise requiring the invoices for servicing and belt replacement, and checking the oil level often.

    Versions
    1.0 EcoBoost 100, 1.0 EcoBoost 125, 1.0 EcoBoost 140, 1.0 EcoBoost mHEV 125, 1.0 EcoBoost mHEV 125 Powershift, 1.0 EcoBoost mHEV 155
    Onset
    not documented
    Repair
    not documented

  2. Cooling circuit leaks on the 1.0 EcoBoost

    Severity 2/3 · Costly

    The 1.0 EcoBoost is prone to coolant leaks: a fragile hose, a cracked water housing or expansion tank. The circuit can empty fairly quickly without warning, and the resulting overheating can damage the cylinder head and head gasket. A falling coolant level is the sign to watch for.

    Versions
    1.0 EcoBoost 100, 1.0 EcoBoost 125, 1.0 EcoBoost 140, 1.0 EcoBoost mHEV 125, 1.0 EcoBoost mHEV 125 Powershift, 1.0 EcoBoost mHEV 155
    Onset
    not documented
    Repair
    not documented

1.0 EcoBoost mHEV 155

  1. Wet belt of the 1.0 EcoBoost

    Severity 3/3 · Serious

    On the 1.0 EcoBoost, a belt (timing or oil pump belt depending on the version) runs in oil. As it degrades, it can release debris that clogs the oil pump pickup and causes oil pressure to drop, risking engine failure. An owner of a 2018 Fiesta 1.0 EcoBoost reports a belt that slipped and clogged the pickup at 140,000 km. Reliability guides advise requiring the invoices for servicing and belt replacement, and checking the oil level often.

    Versions
    1.0 EcoBoost 100, 1.0 EcoBoost 125, 1.0 EcoBoost 140, 1.0 EcoBoost mHEV 125, 1.0 EcoBoost mHEV 125 Powershift, 1.0 EcoBoost mHEV 155
    Onset
    not documented
    Repair
    not documented

  2. Cooling circuit leaks on the 1.0 EcoBoost

    Severity 2/3 · Costly

    The 1.0 EcoBoost is prone to coolant leaks: a fragile hose, a cracked water housing or expansion tank. The circuit can empty fairly quickly without warning, and the resulting overheating can damage the cylinder head and head gasket. A falling coolant level is the sign to watch for.

    Versions
    1.0 EcoBoost 100, 1.0 EcoBoost 125, 1.0 EcoBoost 140, 1.0 EcoBoost mHEV 125, 1.0 EcoBoost mHEV 125 Powershift, 1.0 EcoBoost mHEV 155
    Onset
    not documented
    Repair
    not documented

No recurring fault documented for: 1.1 85, 1.5 TDCi 85, 1.5 TDCi 120, ST 200.

Price and diagnose repairs

Read fault codes

An OBD scanner plugged in under the steering wheel shows stored fault codes, even with warning lights off: useful during the test drive.

Parts and maintenance

Compare prices of parts for the Ford Fiesta VII (timing, brakes, filters) to estimate the repairs to plan for.

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