Ford Fiesta Mk8 — Reliability

Mk8 2017–2020 1 engine

Reliability Summary

Engine EcoBoost 1.0 (post-2018) — 80/100 BUY
Known Issues 3

Engine in this model

BUY 80

EcoBoost 1.0 (post-2018)

1.0L Turbo I3

The revised 1.0 three-cylinder in the Fiesta Mk8, Focus Mk4 and Puma (cylinder deactivation, mild hy...

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Known Issues Across All Engines

Issue Engine Severity Onset
Wet belts in oil (oil-pump belt; timing belt on some codes) - oil starvation risk EcoBoost 1.0 (post-2018) critical —
Catalytic converter failure EcoBoost 1.0 (post-2018) moderate 70,000 km – 80,000 km
Carbon buildup (DI 3-cyl) EcoBoost 1.0 (post-2018) minor 80,000 km – 150,000 km