KNOWN FAULT · BMW

Broken plastic chain guides

Sources are not verified in real time and no entry confirms that your car is affected.

Engine / equipment: N20 / N26 2.0 turbo petrol (118i–125i, 320i/328i, 520i/528i, X1/X3 20i-28i, Z4)
Period mentioned: Approx. 2012–2015
Symptoms: High-pitched whine from the engine that rises with revs, rattle on a cold start.
Possible cause described: The plastic chain guides become brittle and break. The chain goes slack and can jump, or the fragments block the oil pump.
Check for the garage: Check the guides through the oil filler opening and listen for the whine with the bonnet open.
Cost cited in the source: Approx. €1,700–3,300A rough figure from the original database, not an up-to-date quote.

Sources from the original database

Anonymous answer, no personal data.

How much does it cost to repair this fault?

Approx. €1,700–3,300

A rough figure from the original database, not an up-to-date quote.

How is it checked?

Check the guides through the oil filler opening and listen for the whine with the bonnet open.

What are the symptoms?

High-pitched whine from the engine that rises with revs, rattle on a cold start.

Which cars and years does it affect?

Brands: BMW
Engine / equipment: N20 / N26 2.0 turbo petrol (118i–125i, 320i/328i, 520i/528i, X1/X3 20i-28i, Z4)
Period mentioned: Approx. 2012–2015

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