2018 BMW X3 Engine Problems

Part number 17127799184 keeps melting. Over the years I have had multiple components under the hood to melt. I’ve replaced hydraulic lines, coolant reservoirs you name it. Most recently part number 17127799184 keeps melting. I’ve replaced this part three times. My car is currently at Bloomfield hill bmw of Michigan. They did a diagnostic but it states they cannot definitively tell me what’s causing the issue. They advise I start with replacing the heating module but cannot guarantee it will resolve the issue. They stated my car is producing no symptoms. I contacted the corporate office with hopes they would assist with a good will service request. However it appears not only do they not stand behind their products but apparently bmw’s are only meant to last 4-5 years. When questioned if it’s normal for components to continuously melt under the hood he agreed it is not. However refused to offer an equitable solution considering the issues I’ve had over the years and their mechanics currently not being able to state 100 percent what’s wrong with the automobile. When I told him my mother drove a Volvo for 20 years are you saying in 7 years parts on a car should melt? He didn’t offer a response wished me a happy holiday and concluded the call.

A BMW dealership has indicated that the motor mounts on my vehicle need to be replaced. My vehicle has under 29,000 miles, and these parts are designed to last for 60,000 to 100,000 miles. A premature collapse of the motor mounts indicates a manufacturing defect, material weakness or installation error from the factory. I understand that this defect is common for 2018-2020 X3 models. The vehicle did not display any symptoms of this defect and no indicators were displayed on the on-screen monitor.

Vehicle: 2018 BMW X3 VIN: [XXX] My 2018 BMW X3 has had continuous oil and coolant leaks for several years. Major parts have already been replaced including the turbocharger, oil cooler, water pump, turbo lines, radiator hose, thermostat, and valve cover gaskets. The dealer recently confirmed my crankshaft seals are leaking. These issues are consistent with a defective Positive Crankcase Ventilation (PCV) system, which causes excess crankcase pressure and oil leaks. BMW issued an Extended Limited Warranty for PCV/valve cover defects on other models but said my VIN isn’t included—even though I’m experiencing the same failure pattern. This creates potential fire and safety hazards from oil leaking onto hot engine components, as well as the risk of sudden engine failure and environmental hazards from oil dripping onto roads. I respectfully request that NHTSA investigate whether 2018 BMW X3 vehicles should be included in BMW’s PCV/valve cover recall or extended warranty coverage. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Coolant leak. Oil filter housing coolant leak. Water pump leak. Coolant leaked while driving, and vehicle was not driveable after arriving at the dealership when all the coolant purged out of the vehicle.

Light indicator showed low coolant levels. Car was leaking coolant slowly. Filled up coolant but levels continued to go down. Brought to mechanic and they had to remove oil filter housing to replace failing gasket. Car is about 113K miles.

PCV valve issues. Failing PCV valve. I bought my car in 2020 certified pre owned and having issues wi the the PCV Valve similar to the recall for 2018 BMW x3 M40.

BMW uses plastic coolant pipes which become brittle and crack causing huge issue with entire coolant system. It’s a known issue for bmw repair facilities including engine failure

My 2018 BMW X3 xdrive30i G01 series has been experiencing persistent overheating issues, even in cold temperatures as low as 40 degrees. The coolant reservoir boils vigorously while driving, but the temperature gauge does not indicate overheating, and no warning lights appear. The only alert displayed is a low coolant warning instructing to refill coolant or to top off. Recently, I noticed coolant and other fluids leaking from underneath the vehicle, along with a strong burning smell coming from the engine. Adding BMW brand antifreeze/coolant did not resolve the issue. Despite these ongoing issues, the authorized BMW dealership has refused to inspect the cooling system further because no fault codes appear. Independent repair shops have also been unable to diagnose the root cause. This presents a serious safety risk. The vehicle is overheating without warning, which could result in sudden engine failure while driving. The boiling coolant, burning smell, and fluid leaks also raise concerns about a potential fire hazard. This vehicle is now undrivable and unsafe. I urge NHTSA to immediately investigate potential cooling system and sensor defects in this model.

The oil filter housing, which is made of plastic, cracked while the vehicle was running on the highway, leading to sudden loss of the all the coolant and engine overheating.

* Components: Per dealership, Heat exchanger (metal) and oil filter housing (plastic), oil filter housing supports the heat exchanger, vehicle inspected by dealership and available for further inspection. *Vehicle unexpectedly overheated while driving on interstate risking the safety of driver/passengers and others. Dealer's (manufacturer) technician stated that the heat from the metal exchanger warped the plastic oil filter housing causing coolant to leak from heat exchanger, thus not allowing coolant to circulate to engine (leaking out) and causing vehicle to overheat. Metal warping (or potentially melting) plastic seems hazardous *Dealer's technician (manufacturer) inspected and identified the problem and quoted a cost of $3,140.80 to repair (this is seemingly a manufacturer's design flaw). Vehicle's warning system displayed an alert that coolant level was low while driving on interstate and recommended adding coolant soon. Driver pulled over within 5 min of warning light and added coolant. Within 5 min of driving away, Vehicle's onboard warning system displayed warning that vehicle coolant was low and engine temperature was elevated but it was safe to drive a low speed and consult nearest dealership, 2 min afterwards, vehicle alerted driver that engine overheated and to stop vehicle and contact nearest dealership. Vehicle towed to nearest dealership.

TL* THE CONTACT OWNS A 2018 BMW X3. THE CONTACT STATED THAT WHILE HER HUSBAND WAS DRIVING AT 80 MPH, THE COOLANT LEVEL LOW, DRIVE AT A MODERATE SPEED WARNING MESSAGE HAD APPEARED ON HER INSTRUMENT PANEL. THE CONTACT'S HUSBAND CONTINUED TO DRIVE AT A MODERATE SPEED AS ADVISED, SOON AFTER, THE PULL OVER, STOP THE CAR WARNING MESSAGE ALSO ILLUMINATED ON THE INSTRUMENT PANEL AND HER HUSBAND PROCEEDED AS ADVISED. DUE TO THE FAILURE, THE CONTACT'S HUSBAND HAD THE VEHICLE TOWED TO THE AUTOMASTER BMW (3328 SHELBURNE RD #3, SHELBURNE, VT 05482). THE DEALER INFORMED THE CONTACT THAT THEY DISCOVERED A COOLANT LEAK AND THAT A PART NEEDED TO BE ORDERED TO REPAIR THE VEHICLE. PRIOR TO THE FAILURE, THE CONTACT STATED THAT THE SAME COOLANT LEVEL WARNING MESSAGE HAD APPEARED ON THE INSTRUMENT PANEL. THE CONTACT HAD TWICE TAKEN THE VEHICLE TO SOUTH SHORE BMW(1040 HINGHAM ST, ROCKLAND, MA 02370) WHERE THEY NEVER DISCOVERED A COOLANT LEAK AND WOULD TOP OFF HER COOLANT LEVELS EACH TIME SHE VISITED THE DEALER FOR THE SAME MATTER. THE DEALER WAS THEN NOTIFIED AGAIN OF THE LATEST FAILURE AND THE CONTACT WAS INFORMED THAT THE FAILURE WAS DUE TO NORMAL VEHICLE OPERATION, THEY OFFERED NO FURTHER ASSISTANCE WITH THE FAILURE. THE VEHICLE REMAINED IN THE POSSESSION OF THE AUTOMASTER BMW(3328 SHELBURNE RD #3, SHELBURNE, VT 05482) AND HAD YET TO BE REPAIRED. THE MANUFACTURER HAD YET TO BE NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 6,000.

Mileage: 6,000