Audi S4 3.0 TFSI TT B9 — Reliability

B9 Sedan Mid 2016–2024 1 engine

Reliability Summary

Engine EA839 3.0 TFSI — 60/100 CAUTION
Known Issues 3

Engine in this model

CAUTION 60

EA839 3.0 TFSI

3.0L Twin-Turbo V6

Replaced supercharged EA837. Hot-V layout. Powerful but complex. Turbo and coolant system concerns e...

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Known Issues Across All Engines

Issue Engine Severity Onset
Water pump inevitable failure EA839 3.0 TFSI high 60,000 km – 100,000 km
Piston design concern — metallurgy confirmed EA839 3.0 TFSI high 80,000 km – 150,000 km
HPFP concern (resolved post-2020) EA839 3.0 TFSI minor 40,000 km – 100,000 km