Powertrain Guide
BMW B47
The B47 is generally the safer modern BMW diesel choice. Clean oil history, cooling health, DPF use pattern, and EGR campaign evidence still matter.
Strengths
- Strong economy and torque
- Improved refinement
- Generally improved chain risk
Common problems
- EGR cooler and emissions-system faults
- DPF loading on repeated short journeys
- Cooling-system leaks and plastic aging
- Intake contamination and sensor plausibility faults
Pre-purchase checks
- Check EGR recall or campaign history where applicable
- Read DPF soot load, regeneration history, and stored emissions faults
- Inspect coolant level and residue around hoses and housings
- Confirm smooth cold idle and clean boost delivery
Service priorities
- Shorten oil intervals from the longest factory schedule
- Investigate coolant loss immediately
- Maintain conditions that allow complete DPF regeneration
Common applications
Availability varies by market, year, output, and drivetrain configuration.
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