Charge Pipe Failure (N55 & B58 Engines)
ModerateEngineThe factory plastic charge pipe is prone to cracking under boost, especially on cars that have been tuned or driven hard.
Most affected: M235i, M240i, 235i, 240i
Typical symptoms
- •Sudden loss of power
- •Loud "pop" or hissing under acceleration
- •Drivetrain warning or limp mode
What to inspect before you buy
- ✓Visually inspect the charge pipe for cracks near the throttle body
- ✓Check if an upgraded aluminium pipe has already been fitted
- ✓Listen for boost leaks during a test drive