Audi A4 B5 — Reliability

B5 2000–2001 1 engine

Reliability Summary

Engine 2.7 V6 Biturbo (EA835: AGB/AZB/ASJ, A6 AJK/ARE/BES) — 63/100 CAUTION
Known Issues 4

Engine in this model

CAUTION 63

2.7 V6 Biturbo (EA835: AGB/AZB/ASJ, A6 AJK/ARE/BES)

2.7 Biturbo V6 (AGB/AZB/ASJ)

Audi's 2.7 V6 with two small turbos (1999-2005): A4 B5 S4 (265 hp) and RS4 (380 hp), and the A6 C5 a...

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Known Issues Across All Engines

Issue Engine Severity Onset
Timing belt and tensioner failure (bends the valves) 2.7 V6 Biturbo (EA835: AGB/AZB/ASJ, A6 AJK/ARE/BES) critical 60,000 km – 97,000 km
Turbocharger failure (twin K03/K04) 2.7 V6 Biturbo (EA835: AGB/AZB/ASJ, A6 AJK/ARE/BES) high —
Oil and vacuum leaks (PCV system, cam covers, rear crank seal) 2.7 V6 Biturbo (EA835: AGB/AZB/ASJ, A6 AJK/ARE/BES) moderate 129,000 km – 193,000 km
Water pump and thermostat housing leaks 2.7 V6 Biturbo (EA835: AGB/AZB/ASJ, A6 AJK/ARE/BES) moderate —