Question 1

Dual-mass flywheel and clutch wear (320d)

Accepted Answer

Judder when pulling away, a rattle at idle that stops when the clutch pedal is pressed and vibration through the pedal point to a worn dual-mass flywheel. It is common on diesel cars driven in stop-start traffic and is normally replaced together with the clutch.

Question 2

Inlet swirl flap failure (320d)

Accepted Answer

The inlet swirl flaps and their actuator can stick or break, causing a loss of power, an engine warning and, in rare cases, debris entering the engine.

Question 3

N47 timing chain failure (320d)

Accepted Answer

BMW's N47 2.0 diesel (2007-2014/15) is known for timing chain wear. The chain sits at the back of the engine next to the gearbox; a whirring or rattling noise from the rear of the engine is the warning sign. If the chain snaps, the engine is usually destroyed.

BMW 3 Series3 Series E90

Known issues and common problems

BMW 3 Series3 Series E90

Known issues and common problems

Dual-mass flywheel and clutch wear (320d)at 150000 km · 1 solutionsMedium

Inlet swirl flap failure (320d)at 140000 km · 1 solutionsMedium

N47 timing chain failure (320d)at 160000 km · 1 solutionsCritical