Mercedes-Benz GLC X253 — Reliability

X253 2017–2022 1 engine

Reliability Summary

Engine M177 AMG — 84/100 BUY
Known Issues 3

Engine in this model

BUY 84

M177 AMG

4.0L TT V8

The AMG 4.0 biturbo V8 (C 63, E 63, GLC 63, G 63, GLE 63, AMG GT 63, S 63 from 2017). German used-ca...

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Known Issues Across All Engines

Issue Engine Severity Onset
Turbo oil supply line seepage M177 AMG moderate 80,000 km – 145,000 km
Intake carbon buildup (direct injection) M177 AMG moderate 80,000 km – 113,000 km
Spark plugs / ignition coils — short life M177 AMG minor 48,000 km – 80,000 km