BMW M3 F80 — Reliability

F80 Sedan Mid 2014–2018 1 engine

Reliability Summary

Engine S55 — 60/100 CAUTION
Known Issues 6

Engine in this model

CAUTION 60

S55

3.0L Twin-Turbo M I6

M3/M4/M2 Competition twin-turbo six - huge, tunable power. The known weak spot is the friction-held ...

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Known Issues Across All Engines

Issue Engine Severity Onset
Crank hub slip — timing jumps, possible bent valves S55 critical —
Rod bearing wear — frequency disputed S55 critical 97,000 km – 129,000 km
Fuel injector damping component missing — fuel leak, fire risk (recall 20V-666) S55 moderate —
Oil leaks — valve cover, oil filter housing, oil pan gaskets S55 moderate 129,000 km – 161,000 km
Turbo oil seal wear S55 moderate 80,000 km – 150,000 km
Plastic charge pipe splits under boost S55 minor —