BMW N54 engine

In this dossier

• VersionsEach version, and every model that had it
• Watch out 3 warningsKnown faults and what to check
• OwningMaintenance and what owners say

The story

History: facts, each with its source

BMW built the N54 from 2006 to 2016, with two small turbochargers and piezo direct injection. The N55 began replacing it from 2009.¹

Its high-pressure fuel pump led to a class action, a 2010 recall of 2007 to 2010 cars, and in the US a warranty extended to 10 years or 120,000 miles. The injectors got the same extension, and wastegate rattle eight years or 82,000 miles.¹

• Displacement: 3.0L (2,979 cc)¹
• Bore × stroke: 84 × 89.6 mm¹
• Block: Aluminium, open deck¹

Sources

1. Wikipedia (N54)