Audi A4 B5 — Reliability

B5 2000–2001 1 engine

Reliability Summary

Engine 2.7 Biturbo — 55/100 CAUTION
Known Issues 2

Engine in this model

CAUTION 55

2.7 Biturbo

2.7 Biturbo V6 (AGB/AZB/ASJ)

C5 S4/RS4, B5 S4. Twin K03/K04 turbos. Turbo failure common. Oil sludge if neglected. Coolant pipes....

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Known Issues Across All Engines

Issue Engine Severity Onset
Twin turbo failure (K03/K04) 2.7 Biturbo critical 80,000 km – 150,000 km
Oil sludge formation 2.7 Biturbo high 60,000 km – 120,000 km