2021 Bmw X3 Fuel System Problems
2 owner-reported fuel system complaints from NHTSA data
Data sourced from NHTSA public database. For informational purposes only. Always consult a qualified mechanic.
Fuel System Recalls (1)
FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY
BMW of North America, LLC (BMW) is recalling certain 2021 X3 sDrive30i, X3 xDrive30i, X3 M40i, X3M, and X4, and 2021 X4 xDrive30i vehicles. The inlet check valve weld may fail, allowing the filling pipe to separate from the fuel tank.
Fix: BMW will notify owners, and dealers will replace the fuel tank, free of charge. The recall is scheduled to begin May 17, 2021. Owners were also contacted by telephone. To date, all repairs have been done. No further owner notification letters will be sent. Owners may contact BMW customer service at 1-800-525-7417.
Owner Complaints (2)
Your 2021 BMW X3 may fail to start after you refuel it, though the engine usually starts after several restart attempts. A diagnostic scan found error codes P0172 (fuel mixture too rich) and P0446 (evaporative emission system), which BMW has documented in a technical service bulletin. An independent mechanic suggested filling your tank only halfway as a workaround, but the issue wasn't formally diagnosed or fixed. The problem may involve the fuel system's vapor management or fuel pressure regulation, and could require inspection or replacement of fuel system components like the fuel pressure regulator, charcoal canister, or fuel pump.
Parts you may need:
As an Amazon Associate, MyCarTSB earns from qualifying purchases.
The oil pump failed and needs to be replaced. Yes it is available for inspection. If the pump does not get replaced, the oil will not flow through the car like it's supposed to and the engine could seize up and stop working. My dealership confirmed that the oil pump has failed. Another service center mentioned that it's a common problem with certain BMWs because of the plastic component that they used. Because of the issues, BMW switched to metal but never issued a recall to fix those who still have the plastic component. The first error message I received said that the engine oil level is low and I need to add 2 qts of oil. When I tried to digitally measure the oil levels after oil was added, it wouldn't work. It would load to about 20% and then go back to the initial screen without taking a reading. I didn't realize that was a symptom at the time but the dealership confirmed it. I took it to the dealership within a day of receiving the error message.