2015 BMW X4 Problems: 6 Known Issues
2015 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated November 2026
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2015 BMW X4 has 6 documented known issues, with 3 rated critical. The most serious are EGR Cooler Glycol Leak Can Melt the Intake Manifold - European 20d/30d/35d Diesels, 2015 X4 N20 Lower-Engine Whine Requires Timing-Chain Diagnosis and Coolant Pump Electrical Connector Short Circuit - Fire Risk (Recall 24V-608). Across all issues with published estimates, repair costs range from $500 to $4,000. DIY maintenance guides at au7o.io.
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All 6 Known Issues
NHTSA Recalls21 recalls
EXTERIOR LIGHTING
BMW of North America, LLC (BMW) is recalling certain 2022 X4 xDrive30i, X4 M40i, and X4M vehicles. The rear license plate may not be illuminated properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."
EQUIPMENT:OTHER:LABELS
BMW of North America, LLC (BMW) is recalling certain X4 xDrive30i vehicles. The tire label may contain the wrong tire size and pressure information. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 110, "Tire Selection and Rims."
POWER TRAIN:AUTOMATIC TRANSMISSION
BMW of North America, LLC (BMW) is recalling certain 2022 330i, 530i, X3 xDrive30i, and X4 xDrive30i vehicles. The mechatronics unit inside the transmission may not have been assembled properly, which could result in an internal leak.
ELECTRICAL SYSTEM:STARTER ASSEMBLY:RELAY
BMW of North America, LLC (BMW) is recalling certain 2019-2021 BMW 330i, 2019-2022 BMW Z4, 2020-2022 BMW 530i, X3, X4, Toyota Supra, 2021-2022 BMW 430i, 430i Convertible, and 2022 BMW 230i vehicles. The engine starter relay may corrode, causing the relay to overheat and short circuit.
ELECTRICAL SYSTEM:STARTER ASSEMBLY
BMW of North America, LLC (BMW) is recalling certain 2021-2023 Toyota Supra, 2022-2023 2 Series Coupe, 2021-2024 5 Series (xDrive), 2021-2022 Z4, 2022-2024 4 Series (Gran Coupe), 2021-2024 4 Series (Convertible and xDrive Convertible), 2021-2023 4 Series (Coupe), 2021-2024 3 Series, 2021-2023 X4, 2021-2024 X3 vehicles. Please see the recall report for a complete list of all models. The engine starter may overheat and catch fire due to wear on an internal component.
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Frequently Asked Questions
What are the most common BMW X4 problems?
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2015 BMW X4 has 6 documented issues. Documented issues include: EGR Cooler Glycol Leak Can Melt the Intake Manifold - European 20d/30d/35d Diesels, 2015 X4 N20 Lower-Engine Whine Requires Timing-Chain Diagnosis, Coolant Pump Electrical Connector Short Circuit - Fire Risk (Recall 24V-608). Of these, 3 are rated critical and should be addressed promptly.
Is the BMW X4 reliable?
The 2015 BMW X4 has 6 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 3 issues are rated critical: EGR Cooler Glycol Leak Can Melt the Intake Manifold - European 20d/30d/35d Diesels and 2015 X4 N20 Lower-Engine Whine Requires Timing-Chain Diagnosis and Coolant Pump Electrical Connector Short Circuit - Fire Risk (Recall 24V-608). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common BMW X4 problems?
Repair costs for known BMW X4 issues range from $500 to $4,000, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2015-2017 BMW X4 EGR Cooler Glycol Leak Can Melt the Intake Manifold - European 20d/30d/35d Diesels?
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… Severity: high.
What is the 2015 BMW X4 2015 X4 N20 Lower-Engine Whine Requires Timing-Chain Diagnosis?
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 de… Severity: high.
What is the 2015-2018 BMW X4 Coolant Pump Electrical Connector Short Circuit - Fire Risk (Recall 24V-608)?
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 case… Severity: high.
What is the 2015-2017 BMW X4 ISOFIX Lower Child-Seat Anchor Bars Can Be Damaged in Service (Recall 16V-333)?
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… Severity: medium.
What is the 2015-2018 BMW X4 Transfer Case Actuator Motor Failure - All xDrive X4?
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 malf… Repairs typically run $800-$4,000. Severity: medium.
What is the 2015-2023 BMW X4 Oil Leaks - Valve Cover & Oil Filter Housing - All Models?
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… Repairs typically run $500-$1,400. Severity: low.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.