BMW N54 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.

Failing high-pressure fuel pump Every version One source so far

What to check: Ask whether the pump was replaced under the recall or the extended warranty. Feel for long cranking and stumbling.

Wikipedia says the pump could fail and stop the engine suddenly. BMW recalled 2007 to 2010 cars in 2010 and extended the US warranty to 10 years or 120,000 miles.

Sources ¹
Leaking injectors Every version One source so far

What to check: Ask whether the injectors were updated.

Wikipedia says BMW extended the US warranty on the injectors to 10 years or 120,000 miles and introduced an updated design.

Sources ¹
Wastegate rattle Every version One source so far

What to check: Listen for a rattle from the turbos when lifting off the throttle.

Wikipedia says the wastegate bushings wore early and rattled, and BMW extended the US warranty for it to eight years or 82,000 miles.

Sources ¹