BMW S54 engine

This page is a draft. It has not been approved yet, so read it with care.

Watch out for

Reputation: what owners and the press report. Tap one to see what to check.

Rod bearing wear Mostly 2001 to 2003 One source so far

What to check: Ask whether the rod bearings were replaced, and when, and for an oil analysis.

BMW Tuning says it was mostly a problem on 2001 to 2003 engines, that BMW began replacing bearings in affected engines, and that it is less of a concern today.

Sources ¹
VANOS failure Every version One source so far

What to check: Feel for weak low-rev power, hesitation or a rough idle, and read the fault codes.

BMW Tuning calls VANOS failure one of the S54's very few common problems.

Sources ¹