M47

1999–2007•4 cyl•Inline•Al / cast_iron

← Predecessor: M41

• Common Rail system (from 2001) • Variable geometry turbo (M47TU) • DOHC, 16 valves

The BMW M47 (1999–2007) is an advanced inline-4 diesel. DOHC, Common Rail direct injection, variable geometry turbo (M47TU). 2.0 L, up to 163 hp (M47TU2). Used in E46 320d, E39 520d, E83 X3. Efficient and torquey. Weak points: turbo (especially early versions), swirl flaps, timing chain on later versions (N47-like issues). With regular maintenance and quality oil, exceeds 300,000 km.