Mercedes-Benz S 350d W222 — Reliability

W222 Sedan Luxury 2017–2020 1 engine

Reliability Summary

Engine OM656 — 82/100 BUY
Known Issues 2

Engine in this model

BUY 82

OM656

3.0L Diesel I6

Flagship modern MB diesel. Inline-6 smoothness returns. MHEV. GLE/GLS/S-Class. Excellent highway. Ea...

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Known Issues Across All Engines

Issue Engine Severity Onset
DPF + EGR — diesel city driving concern OM656 moderate 60,000 km – 120,000 km
AdBlue / SCR system consumption and faults OM656 minor 30,000 km – ∞