Problems · by component

2015 BMW 4 Series engine and engine cooling problems

26 owner complaints to NHTSA about the 2015 BMW 4 Series cite engine and engine cooling, 28% of all 94 complaints for this model year. NHTSA also lists 1 recall on this component.

Complaints
26
28% of all complaints
Crashes
0
Reported by owners
Fires
0
Reported by owners
Injuries
0
Reported by owners
01 —Owner reports

What owners say about the engine and engine cooling

Verbatim from NHTSA complaints, newest first
“The contact owns a 2015 BMW 428I. The contact stated that while driving approximately 29 MPH, the vehicle started to overheat and experienced reduced power, and there was smoke coming from under the hood. The contact stated that there were unknown warning lights illuminated. The contact was able to drive to the residence. Additionally, while driving at 40 MPH, the failure recurred, and the vehicle stalled. The contact was able to pull over to the side of the road. The vehicle was towed to the residence. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not contacted. The failure mileage was unknown.”
Owner complaint to NHTSAFiled Mar 4, 2026Engine and engine coolingODI 11721958
“The contact owns a 2015 BMW 428I. The contact stated that while the vehicle was parked, while attempting to start the vehicle, it failed to start. The contact stated that the vehicle eventually started. The vehicle was taken to an independent mechanic, where it was diagnosed with coolant pump failure. The contact was informed that the coolant had been continuously running, causing the battery to completely drain. The contact was informed that the battery needed to be replaced, the radiator needed to be flushed, and the repair of a small oil leak was needed. The vehicle was repaired. The VIN was included in NHTSA Campaign Number: 24V608000 (Engine and Engine Cooling, Electrical System). While driving to the dealer, the loss of communication with the coolant pump warning light illuminated. The contact was informed that the coolant pump had passed the inspection and did not need to be replaced. The contact was informed that the shield was installed as per the recall. The contact stated that upon retrieving the vehicle from the dealer, the battery was completely drained. The contact was informed that the battery needed to be replaced. The dealer was informed that…”
Owner complaint to NHTSAFiled Feb 3, 2026Engine and engine cooling, Electrical systemODI 11715294
“The contact owns a 2015 BMW 428I. The contact discovered that the water pump was continuously running after the vehicle was turned off. The contact referenced and associated the failure with NHTSA Campaign Number: 24V608000 (ENGINE AND ENGINE COOLING, ELECTRICAL SYSTEM); however, the VIN was not included. The dealer was notified of the failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 118,357.”
Owner complaint to NHTSAFiled Feb 3, 2026Engine and engine cooling, Electrical systemODI 11715401
“The contact owns a 2015 BMW 428I. The contact stated that while driving at an undisclosed speed, the coolant warning light intermittently illuminated on several occasions. The contact was informed that the VIN was included in NHTSA Campaign Number: 24V608000 (ENGINE AND ENGINE COOLING, ELECTRICAL SYSTEM). The vehicle was taken to a dealer, where it was diagnosed that there was an electrical connector on the water pump that was exposed to water and that the water pump needed to be replaced. The contact stated that the manufacturer had removed the VIN from the recall. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was unknown.”
Owner complaint to NHTSAFiled Oct 8, 2025Engine and engine cooling, Electrical systemODI 11692123
“The contact owns a 2015 BMW 428I. The contact received notification of NHTSA Campaign Number: 24V608000 (Engine and Engine Cooling, Electrical System). The contact called the local dealer, who confirmed that recall parts were not yet available and advised the contact to wait for another notification to arrive when parts become available. The vehicle was not diagnosed or repaired. The manufacturer was not contacted about the issue. The contact had not experienced a failure.”
Owner complaint to NHTSAFiled Aug 19, 2025Engine and engine cooling, Electrical systemODI 11681502
“The contact owns a 2015 BMW 428I. The contact received notification of NHTSA Campaign Number: 24V608000 (Engine and Engine Cooling, Electrical System); however, the part to do the recall repair was not yet available. The contact stated that while driving 20 MPH, the check engine warning light illuminated, and the messages "Engine Overheated" and "Please Pull Over" were displayed on the instrument panel. The contact replaced the water pump and the thermostat; however, the failure persisted, and the vehicle was taken to an independent mechanic to be diagnosed and the contact was informed that the water pump had failed and needed to be replaced. The water pump and thermostat were replaced; however, the failure persisted, and the engine kept overheating. The vehicle was taken back to the independent mechanic. The water pump and thermostat were replaced. The independent mechanic checked the electrical system. However, no cause for the failure was found. The contact stated that the failure persisted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the failure. The failure mileage was unknown.”
Owner complaint to NHTSAFiled Aug 11, 2025Engine and engine cooling, Electrical systemODI 11679826

Showing 6 of 26 reports. Read every report on NHTSA.gov.

Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 7, 2026NHTSA vehicle page
02 —Related recalls

1 recall on this component

Engine and engine cooling: pump

Free remedy

BMW of North America, LLC. (BMW) is recalling certain 2012-2015 X1 sDrive28i, X1 xDrive28i, 2012-2016 Z4 sDrive28i, 528i, 528i xDrive, 328i, 328xi, 2016-2018 X5 xdrive 40e, 2014-2016 228i, 228xi, 428i, 428i xDrive, 328xi Gran Turismo, 2013-2017 X3 sDrive28i, X3 xDrive28i, 2015-2018 X4 xDrive28i, 2015-2016 428xi vehicles. An improperly sealed electrical connector on the water pump may be exposed to water and short circuit.

Engine and engine coolingReported Aug 14, 2024NHTSA 24V608000
Data from NHTSA Recalls API · synced Nov 7, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Other 2015 4 Series problem areas