KNOWN FAULTS · BMW

BMW X4 (F26) xDrive20d (N47, hasta 2015) common problems.

2014–2018 · Diesel

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

2 known faults with sources

Stretched rear timing chainValve timing

Engine / equipment: N47 2.0 diesel (116d–123d, 316d–325d, 520d, X1/X3 18d-20d)
Period mentioned: 2007–2015 (improved from 2011)
Symptoms: Rattling from the rear of the engine (gearbox side) on a cold start, getting worse over time. In extreme cases the engine cuts out while driving.
Possible cause described: The timing chain sits at the rear of the engine; its guides are poorly lubricated and the chain stretches. If it jumps or snaps, the valves hit the pistons and the engine is destroyed.
Check for the garage: Listen with the engine fully cold, ideally with a mechanic's stethoscope on the rear of the block.
Cost cited in the source: Approx. €2,000–4,000 at an independent garage (engine must come out)A rough figure from the original database, not an up-to-date quote.

Applies if: Only if fitted with the automatic gearbox described in the record.

ZF 8HP oil level, leaks and harsh shiftsAutomatic gearbox

Engine / equipment: ZF 8HP automatic gearbox in rear-wheel-drive BMWs from 2009 (1 to 8 Series and X: F20, F30, F10, G20, G30, X3, X5…)
Period mentioned: 2009–2026
Symptoms: Harsh shifts (especially engaging D and 1st to 2nd), slipping or jerking; oil leaks from the pan, the mechatronic connector sleeve or the seals.
Possible cause described: BMW's diagnostic guide says an incorrect oil level is a frequent cause of shift complaints and asks for it to be checked every time, even with no visible leaks; the pan can be damaged by impacts. The sealing sleeve between gearbox and mechatronic lets oil through to the connector. The oil, sold as lifetime, degrades.
Check for the garage: Check the oil level with the official procedure (correct temperature and engine running), look for leaks at the pan, connector sleeve and seals, inspect the pan for impact damage and review adaptation values with ISTA.
Cost cited in the source: Oil change with pan and filter: maintenance; sleeve or seals: minor repair; mechatronic: expensive repairA rough figure from the original database, not an up-to-date quote.