Reliability Report · Multi-Source Data

BMW M240i xDrive (2018–2018) Reliability

The BMW M240i xDrive (2018–2018) scores 100/100 on our composite reliability index — excellent territory — drawn from NHTSA data. The most-flagged failure mode is oil gasket leaks on the B58 engine, typically surfacing between 60,000 and 150,000 km. Workshop repair runs €400–€1,000. Estimated used prices span €12,900–€12,900.

Composite Score
100
/ 100
Excellent
Sources: NHTSA · latest 2026
Market Snapshot
Listed model years2018–2018
Est. used price€12,900–€12,900
Documented issues1
Listings in catalogue1
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Reliability by Source

Each independent organization measures reliability differently. TÜV reports inspection defect rates by age band. ADAC reports pan-European breakdowns per 1,000 vehicles. NHTSA aggregates US consumer complaints. DVSA MOT data is the UK fleet's annual safety inspection — every car 3+ years old. Lower variance across sources = higher confidence in the composite.

NHTSA (US Complaints)
Model years 2016–2020 · 2026 report · n=5
5 complaints across 3 sampled year(s); resolved model="M240I"
View source ↗
100
/ 100

Known Issues

Specific failure modes documented across European workshops, owner forums, and TSBs. Costs in EUR (and USD reference) reflect typical retail European labor + parts ranges — specialist shops at the low end, dealer pricing at the high end.

Oil gasket leaks
Typical at 60,000–150,000 km · B58
Valve cover and oil pan gaskets. Common on B58 at higher mileage.
€400–€1,000medium

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