Ford Fiesta Mk4/Mk5 (JA/JB) — Reliability

Mk4/Mk5 (JA/JB) 1996–2002 1 engine

Reliability Summary

Engine Sigma 1.25 — 84/100 BUY
Known Issues 2

Engine in this model

BUY 84

Sigma 1.25

Sigma 1.25 (FUJA/SNJA/STJA)

Fiesta 1.25 16V (Zetec-SE, later Duratec), also Fusion and Mazda2. Simple, light engine co-developed...

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Known Issues Across All Engines

Issue Engine Severity Onset
Ignition coil or lead failure - misfire Sigma 1.25 minor —
Thermostat and cooling system leaks Sigma 1.25 minor —