Ford Focus ST 2.3 EcoBoost DEH — Reliability

DEH Hatchback Compact 2019–2025 1 engine

Reliability Summary

Engine EcoBoost 2.3 — 76/100 ACCEPTABLE
Known Issues 3

Engine in this model

ACCEPTABLE 76

EcoBoost 2.3

2.3L Turbo I4

Ford's 2.3 turbo four-cylinder with direct injection, used in Europe in the Focus RS (2016-2018), th...

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Known Issues Across All Engines

Issue Engine Severity Onset
Coolant leaking into the cylinders (alleged on Mustang and other 2.3 models) EcoBoost 2.3 critical —
Head gasket leaks coolant into the cylinders (Focus RS built 2015-2017) EcoBoost 2.3 high 10,000 km
Factory batch defects on recent US builds (cracked block 2023, pistons 2026) EcoBoost 2.3 minor —