2019 BMW X4 Problems: 4 Known Issues
2019 model year · 150+ owner reports · Updated October 2026
According to Au7o's analysis of 150+ owner reports, the 2019 BMW X4 has 4 documented known issues, with 1 rated critical. The most serious is Plastic Coolant Hoses and Quick-Disconnect Fittings Leak - B46/B48 and B58. The most commonly reported issue is Rear Differential Mount Bushing Failure with 150 owner reports. Across all issues with published estimates, repair costs range from $400 to $1,400. DIY maintenance guides at au7o.io.
2019 · All trims · All engines
Choose the year and equipment for your written issues and visual request.
No email neededHow interest is saved
Interest applies to the selected vehicle and configuration; it is not a reservation. Voting stores a first-party identifier for up to 180 days to prevent repeat votes. No account or email is needed. Clearing cookies or using another device may count separately. Privacy
Visual coming soon
Your interest helps us choose what to build next.
Visual Known Issues · Coming soon
$4.99/month plus taxes at launch · No payment today
All 4 Known Issues
NHTSA Recalls13 recalls
AIR BAGS
BMW of North America, LLC (BMW) is recalling certain 2025 X4 xDrive 30i, X4 M40i and X4 M vehicles. The inner-left roof frame near the head air bag may have a crack that can damage the head air bag during deployment.
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
BMW of North America, LLC (BMW) is recalling certain 2023 Toyota GR Supra, 3 Series Sedan (330i xDrive, M340i xDrive, M3), 5 Series Sedan (530i, 530i xDrive, M5), 4 Series Gran Coupe (430i, 430i xDrive), 4 Series Coupe (430i, 430i xDrive, M440i xDrive), 4 Series Convertible (430i, 430i xDrive, M440i xDrive), 8 Series Coupe (840i, M850i xDrive, M8), 8 Series Convertible (840i, M850i xDrive, M8), 8 Series Gran Coupe (850i xDrive, M8), X3 SAV (X3 xDrive30i, X3M), X4 SAV (X4 xDrive30i), X5 SAV (X5 xDrive40i, X5 M50i, X5M), X6 SAV (X6 xDrive40i, X6 M50i, X6M), and Z4 sDrive30i, Z4 M40i vehicles. The weld seam of the integrated transmission control unit's cover may not have been manufactured properly, which could allow automatic transmission oil to leak into the transmission control unit.
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.
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."
+ 8 more recalls. Check all on NHTSA.gov
Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.
Join 600+ people using Au7o to better understand their vehicles.
Don't see your problem? Describe your symptoms to get a diagnosis, or get a full repair guide.
Other BMW Models
Frequently Asked Questions
What are the most common BMW X4 problems?
According to Au7o's analysis of 150+ owner reports, the 2019 BMW X4 has 4 documented issues. The most frequently reported are: Plastic Coolant Hoses and Quick-Disconnect Fittings Leak - B46/B48 and B58, Rear Differential Mount Bushing Failure, B58 PCV Diaphragm Can Rupture - Smoke, Whistle or Misfire (2019 X4 M40i, SIB 01 14 23). Of these, 1 is rated critical and should be addressed promptly.
Is the BMW X4 reliable?
The 2019 BMW X4 has 4 known issues documented across 150+ owner reports. 1 issue is rated critical: Plastic Coolant Hoses and Quick-Disconnect Fittings Leak - B46/B48 and B58. 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 $400 to $1,400, 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 2019-2025 BMW X4 Plastic Coolant Hoses and Quick-Disconnect Fittings Leak - B46/B48 and B58?
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 0… Severity: high.
What is the 2015-2023 BMW X4 Rear Differential Mount Bushing Failure?
The rear differential mounting bushings on the X4 degrade over time, causing clunking and vibration from the rear of the vehicle. The rubber bushings crack and collapse, allowing excessive differential movement. Common in models driven aggressively or on rough roads. Repairs typically run $400-$1,000. Severity: medium.
What is the 2019 BMW X4 B58 PCV Diaphragm Can Rupture - Smoke, Whistle or Misfire (2019 X4 M40i, SIB 01 14 23)?
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… 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.