BMW reliability at high mileage is engine-dependent. N57 530d and X5 35d regularly reach 250,000 miles. N47 is the cautionary tale. Full model and engine longevity ranking.
This Reliability guide combines structured analysis β verdicts, risk scoring and cost ranges where we have enough data β with real fault cases pulled directly from MyCarFault's reporting database, so the guidance below reflects what owners actually experience rather than manufacturer specifications alone. Background and analysis come first, followed by the linked fault reports and related guides you can jump to directly using the links above.
BMW high-mileage reliability polarises opinion because different engines have vastly different longevity records. The N47 diesel created a generation of cautious used buyers. The N57, B47 and several petrol units tell a completely different story.
Yes β N57 diesels and N52 petrols regularly do with maintenance. N47 with confirmed chain work also capable.
N57 3.0 diesel for diesel. N52 for older petrol. B47 and B48 for modern units.