2015-2025 BMW X4 Problems: 12 Known Issues

Recall 23V770 includes certain 2024 X4 vehicles. BMW SIB 32 04 23 describes an internal steering-gear component that may not have been properly tightened during assembly, potentially causing excessive noise, especially when parking or making tight turns; NHTSA notes a loose steering gear can cause loss of vehicle control. A VIN check is needed; noise alone cannot confirm this defect.

Recall 20V355 includes certain 2020 X4 M vehicles. BMW SIB 32 01 20 lists the F98 production window as March 11 to April 10, 2019; the broader October 2018–July 2019 dates cover other models in the campaign. Affected steering-gear tie rods can become damaged and break, increasing crash risk. Confirm the individual VIN; standard X4 xDrive30i and M40i are not the X4 population listed in this campaign.

BMW SIB 11 03 17 identifies F26 X4 xDrive28i N20 vehicles produced from March 2014 through February 2015. A lower-engine whine that increases with engine speed can be associated with timing-chain or oil-pump-drive-chain wear; the bulletin does not declare every X4 or every N20 defective.

BMW SIB 01 14 23 describes a crankcase pressure control valve (PCV) diaphragm that can rupture or split over time on VIN-eligible vehicles, including MY2019 G02 X4 M40i (B58M) produced January 3, 2018 to July 15, 2019. Blue/white smoke after a cold start, a high-frequency whistle at idle, cylinder 6 misfire faults or limp mode may occur, but those symptoms alone do not select a repair. BMW extended the PCV limited warranty to 15 years/150,000 miles for eligible vehicles.

BMW X4 models with N20, N55, B46, B48, and B58 engines commonly develop oil leaks from valve cover gaskets and oil filter housing gaskets. The plastic valve cover warps from heat cycles, causing gasket failure. The oil filter housing, which bolts to the engine block on a profile gasket, also develops leaks. These are wear items that typically fail between 60,000-100,000 miles. Oil leaks onto hot exhaust components, causing burning oil smell but rarely major issues if addressed promptly.

On the European-market X4 20d, 30d and 35d, coolant (glycol) can leak from the exhaust gas recirculation cooler. Combined with soot deposits and the high temperatures inside the EGR system, the leaking glycol can produce burning soot deposits that can melt the intake manifold and in the worst case start a fire. BMW's UK recall named X4 (20d, 30d, 35d) vehicles manufactured between December 2013 and June 2017. US X4s were never sold with these diesels, so this is a European and UK issue.

The G02 X4's cooling system uses plastic hoses, connectors and quick-disconnect fittings, and X4 reliability guides report slow coolant leaks at plastic parts such as the expansion tank and thermostat housing that can escalate if ignored. Separately, BMW service bulletin SIB 17 03 20 covers coolant leaks from quick-disconnect coolant lines whose O-rings do not seal at or below -15C / 5F, on the G01 X3, G02 X4, G05 X5 and G07 X7 built up to March 31, 2019. This is a platform-wide B46/B48/B58 cooling system, shared with the X3 and 3 Series.

Recall 19V678 covers 368 US-market X3 and X4 vehicles, including certain 2020 X4 xDrive30i and M40i vehicles. A manufacturing heat-treatment problem can weaken a front swivel bearing and allow it to break, potentially causing loss of control. BMW instructed potentially affected owners not to drive their vehicles. The reviewed recall material does not establish clunking, steering pull or tire wear as reliable advance indicators.

The transmission supplier discovered that at least one mechatronics unit left the line without all of the bolts required to assemble it. The missing fasteners can cause an internal leak inside the transmission, and in rare cases this could result in a rollaway condition. NHTSA campaign 22V-070 is tiny - four vehicles in total - but it names the 2022 X4 xDrive30i specifically (one vehicle built December 14, 2021) alongside the 330i, 530i and X3 xDrive30i. Owner notification was planned for April 2022.

BMW recalled more than 720,000 vehicles in August 2024 because small drops of liquid from the positive crankcase ventilation system can drip onto and penetrate the electrical plug connector of the electric coolant pump. Over time this can lead to a short circuit and, in rare cases, a thermal event. The 2015-2018 X4 xDrive28i (F26) is named in the campaign. This is distinct from an ordinary worn-out pump: BMW states the electric coolant pump itself is not recalled, and the remedy centres on the connector and a retrofitted protective splash cap. BMW reported roughly 18 customer complaints and no crashes or injuries at the time of the recall.

The lower anchor bars used to attach child restraint systems can be damaged over the life of the vehicle when rigid ISOFIX-style connectors are repeatedly used on them. A damaged anchor bar may not hold the child seat as designed in a crash. NHTSA campaign 16V-333 covers roughly 188,670 US vehicles; BMW's bulletin lists F26 X4 vehicles produced from April 2014 through April 15, 2016 (model years 2015-2017 per NHTSA). BMW notes the rigid-style connector is mainly used in Europe and that the condition is unlikely with LATCH-type flexible connectors.

BMW xDrive (AWD) X4 models use an electronically-controlled transfer case that commonly experiences actuator motor failures between 60,000-100,000 miles. The transfer case actuator motor and internal clutch pack wear out from normal use. Symptoms include grinding noises, AWD malfunction warnings, and xDrive no longer engaging properly, leaving the car driving on the rear wheels only. The actuator motor is a common failure point and can be replaced separately, but complete transfer case failure requires full replacement. This is reported on the first-generation F26 X4 (2015-2018) with xDrive.