A4 B6 / B7
2 generations · Select a generation to see engines
Which Audi A4 B6 / B7 engine is the most reliable? See common problems, reviews and reliability verdicts across generations and engines.
Frequently asked questions
Which Audi A4 B6 / B7 engine is the most reliable?
2.0 20V 130hp (ALT) (A4 (B6, 8E)) — Maint. Sensitive verdict. The naturally aspirated 2.0 20V (ALT) in the A4 B6/B7, A6 C5 and Passat B5.5. No turbo and no direct injection, so the expensive failure modes of the later TFSI are absent. The known complaint is oil use: owners report burning oil, and forum advice is to check the PCV system and valve-cover baffles first, because one 2002 A4 owner rebuilt the rings and valves and it still burned oil. In the A4 it was often paired with the Multitronic CVT, which is the bigger risk.
Which Audi A4 B6 / B7 engines should you avoid?
None of the Audi A4 B6 / B7 engines listed are rated "Problematic" or "Avoid" — but always check the service history before buying.
What are the most common Audi A4 B6 / B7 problems?
The most commonly reported problems across all Audi A4 B6 / B7 generations and engines: Timing belt, Oil consumption, Multitronic 01J pairing, PD camshaft and follower wear, Oil sludge.