Which parts fail
Components named in complaints (engine, cooling system, oil leaks, timing chain, exhaust).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2019 BMW X3 owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2019 BMW X3. The contact stated that the carbon monoxide detector sounded an alarm from the living room. The contact stated that her husband was unable to turn off the carbon monoxide alarm and called the Fire Department. The Fire Department arrived and determined that the vehicle, which had been parked in the garage of the residence, had experienced a thermal event in the engine compartment. The contact was advised that heat had generated carbon monoxide gas that had spread from the garage into an attic crawl space and then into the living room of the residence which had set off the carbon monoxide alarm. The contact stated that they were not able to drive the vehicle out of the garage due to the heat from the engine compartment. …
Subject: Rear Differential Mount Failure and Driveshaft Breakage - Sudden Loss of Vehicle Control at Highway Speed Complaint Summary: While driving at highway speed, I experienced a sudden and extremely loud bang from the rear of the vehicle. Immediately afterward, I lost complete control of the rear end, accompanied by violent clanking and grinding noises from the driveline area. The gearbox then stalled, leaving the vehicle disabled in the middle of the highway. Upon inspection, it was determined that a rear differential mounting bolt had sheared, causing the differential to shift violently out of position. This sudden movement resulted in the driveshaft breaking, which further destabilized the vehicle and led to a severe and immediate loss of control. This failure occurred without warning and created an extremely dangerous situation. …
On Sept 16th, 2026 my wife was operating the vehicle under normal, routine driving conditions. While she was completely stopped at a stop sign the vehicle spontaneously caught fire. Description of the Issue and Damage: 1. There was no collision, impact, or external trauma prior to the fire. 2. There were no check engine lights, overheating warnings, or malfunction indicators on the dashboard leading up to this event. 3. The vehicle has been properly maintained and unmodified. 4. The fire originated spontaneously within the engine compartment. As documented in the attached photographs, the thermal event was heavily concentrated on the passenger side of the engine bay. 5. …
The contact owns a 2019 BMW X3. While the vehicle was at an independent mechanic for maintenance, the technician discovered an active coolant leak coming from the coolant expansion tank. The mechanic stated that the leak was caused by excessive system pressure stressing the factory plastic tank. The mechanic informed the contact that if the issue was not resolved, the failure might become a major coolant leak into the engine, and the engine would need to be replaced. The vehicle was not repaired because the leak was coming from several areas. The contact stated that all the plastic parts need to be replaced with metallic parts. The vehicle was towed to the dealer but was not yet diagnosed. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 69,000.
The contact owns a 2019 BMW X3. The contact stated while driving approximately 40 MPH, the engine overheating warning light was illuminated. The contact stated that a message was displayed to "Stop Driving and Allow Engine to Cool Down". The contact drove the vehicle to a local dealer, where it was diagnosed and determined that the water pump had failed and needed to be replaced. The vehicle was repaired. The manufacturer was not informed of the failure. The contact researched online and related the failure to NHTSA Campaign Number: 24V608000 (Engine and Engine Cooling, Electrical System) however, neither the VIN nor the model year was included. The failure mileage was approximately 80,000.
The contact owns a 2019 BMW X3. The contact stated that while driving 20 MPH on a main road, the message "Warning - Add Coolant' was displayed, and the temperature gauge indicated that the engine was overheating. The contact pulled over to the side of the road and allowed the engine to cool down. The vehicle was towed to an independent mechanic, where it was diagnosed and determined that the engine had failed due to coolant intrusion. The mechanic determined that the engine needed to be repaired. The vehicle was not repaired. The dealer was notified of the failure. The manufacturer was notified of the failure. The approximate failure mileage was 88,000.
The contact owns a 2019 BMW X3. The contact stated that while performing a visual inspection of the vehicle, she noticed that the engine oil was leaking from the vehicle. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed that the oil filter housing had failed. The vehicle was not repaired. The contact related the failure to TSB Number: 11-02-20. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was 100,000.
The contact owns a 2019 BMW X3. The contact stated that while driving at an undisclosed speed, the vehicle overheated. The contact added coolant to the reservoir. The coolant warning light was illuminated. The vehicle was taken to the local dealer where it was diagnosed that coolant was needed. The vehicle was repaired but the failure persisted. The contact mentioned she was concerned about a vehicle fire. The manufacturer was not contacted. The failure mileage was approximately 30,000.
My 2019 BMW X3 equipped with a B46 engine developed a significant coolant leak at approximately 80,000 miles. The vehicle displayed a low coolant warning, and coolant was visibly leaking underneath the vehicle. Around the same time, I began noticing excessive white exhaust/steam during cold starts and, for the first time since owning the vehicle, had to add engine oil between scheduled oil changes. The vehicle is currently undergoing inspection by an independent repair facility. Preliminary findings indicate concerns involving premature failure of critical plastic cooling system and/or oil filter housing components. Based on my research, these failures appear consistent with widespread complaints involving BMW B46/B48 engine cooling system and oil filter housing defects. …
I am submitting this complaint regarding a serious mechanical and safety issue involving my 2019 BMW X3. On or around January 21, 2024, while driving from my home, a warning signal suddenly appeared on my dashboard related to the vehicle's cooling system/engine. Due to safety concerns, I pulled into a nearby Wawa parking lot, which was the safest available place to stop at the time. I turned the vehicle off and waited approximately 15 minutes before carefully driving the vehicle back home. After inspection and diagnosis, I was informed that the vehicle required extensive repairs, including an engine replacement and cooling system repairs. At the time the coolant warning appeared, the replacement engine reportedly had approximately 59 miles on it. …
Engine complaints in other X3 years
Frequently asked questions
How common are engine problems on the 2019 BMW X3?
NHTSA has 42 complaints about the engine & cooling of the 2019 BMW X3, 25% of the model year's 171 complaints. The component named most often is engine › oil/lubrication › filter/screen (1 mentions).
Is there a recall for 2019 BMW X3 engine problems?
No. NHTSA lists no engine & cooling recall for the 2019 BMW X3, though it has 10 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2019 BMW X3 engine problems start?
Half of the complaints with a recorded mileage happened before about 80,000 miles, and 25% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 1 fire and 0 injuries to engine & cooling problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.