2018 BMW X3 Problems

The sunroof drains of the vehicle become easily clogged. When this happens, water drains into the battery compartment and interior of the vehicle. Although BMW is aware of this, and the attendant danger of having water pooling in the battery compartment, they have not addressed the issue. There are no warning lamps, messages or other symptoms prior to the problem.

This problem has occurred to me now twice. Both occurrences were on very cold days where the temperature was below 20 degrees F. The car starts promptly and runs, but the entire dashboard electronic instrument cluster is non-functioning and dark . In this condition, you cannot tell your speed, engine rpm, fuel level, engine temperature, or any mileage numbers. The turn signals also do not work. The headlights and the iDrive screen and the climate control were all lit properly and functioned. I did not think to check the brake or tailights, unfortunately. Multiple restarts of the car had no effect, and so I drove home without the dash functions. After the car sat overnight in my garage (which is somewhat warmer) the dash lights returned to their proper function.

While driving on the interstate lost coolant through the oil cooler housing. I had to quickly get to the shoulder of the road having to cross several lanes of traffic. The car had to be towed. I had it towed to the dealership where I purchased it as I paid for an extended warranty. Warranty company denied the claim. Through research I am finding this is an issue with BMWs as they part is plastic and does not stand up well with the temperature changes it is subjected to. This needs to be a recall. The car is still in the shop, 45 days later. Approximate cost to repair $2,840.00 plus tax.

BMW installed a part that is failing quite a number of vehicles including this vehicle. The oil filter housing was not properly constructed at the factory. Fails.

The sunroof drains of the vehicle become easily clogged. When this happens, water drains into the battery compartment and interior of the vehicle. Although BMW is aware of this, and the attendant danger of having water pooling in the battery compartment, they have not addressed the issue. There are no warning lamps, messages or other symptoms prior to the problem.

my car has a recall, and dealer told me it can not be solved. for this reason, I can not rent my car in Turo due to incomplete recall, and I also have safety concerns

The contact owns a 2018 BMW X3. The contact stated that when the vehicle was started, there were several unknown warning lights illuminated on the instrument cluster. The contact stated that the rear and side view cameras were disabled, and the Forward Collision Avoidance system was disabled. The contact stated that the failure was a recurring failure. The vehicle was taken to a dealer to be diagnosed and it was determined that the steering wheel torque sensors had failed. The vehicle was not repaired. The manufacturer was informed of the failure and referred the contact to the NHTSA Hotline. The failure mileage was approximately 85,000.

One morning, I tried to back my door out of garage and I couldn’t. I found front tire could not be turned. Found that front tire steering tie rod is snapped into 2 pieces. Further inspection showed that the steering rod had some deflects before broken. I took the photos to show the evidence.

The contact owns a 2018 BMW X3. The contact stated that while driving over 45 MPH, the Lane Departure and Blind Spot features deactivated unintendedly. The message that the system was deactivated was displayed. The local dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted and referred the contact to the NHTSA Hotline. The failure mileage was approximately 71,000.

Around April 2025, While driving at highway speeds for approximately 1hour with cruise control engaged, vehicle suddenly began to decelerate as if I had taken my foot off the throttle. Pressing the throttle had no effect on engine RPM or vehicle speed as the vehicle continued to decelerate. Tapping the brakes then pressing the throttle had no effect as vehicle continued to decelerate. I was able to negotiate across lanes of highway traffic at low speed to reach shoulder with no throttle control. After coming to a stop on the highway shoulder, pressing the throttle failed to rev the engine or move the vehicle forward in drive. After placing transmission in reverse, the vehicle did back up normally allowing me to put the car in a safer position on the shoulder. After turning off the ignition and restarting, the vehicle operated normally. I was able to complete my trip without incident. I did not engage the cruise control. A few days later, I took the vehicle to an BMW dealer service center but no error codes or malfunctions were identified. A second incident similar to the first occurred in August 2025. Again, I was able to reach the shoulder without serious incident. After turning off the ignition and restarting, the vehicle operated normally. I was able to complete my trip. I did not engage the cruise control.

The contact owns a 2018 BMW X3. The contact stated that while driving at an undisclosed speed, the brake pedal went to the floorboard while depressed; however, the brakes failed to stop the vehicle. The contact was able to steer the vehicle into a gas station before the vehicle came to a complete stop. Car’s computer failed to indicate there were any hazardous issues nor dangerous concerns. The vehicle was towed to the dealer where it was diagnosed with brake master cylinder failure. The vehicle was not repaired and remained at the dealer. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA. The failure mileage was approximately 50,000.

TL* THE CONTACT OWNS A 2018 BMW X3. THE CONTACT STATED WHILE DRIVING AT 65-70 MPH, THE VEHICLE BECAME UNSTABLE. THE CONTACT STATED THAT SEVERAL UNKNOWN WARNING LIGHTS WERE ILLUMINATED. THE CONTACT REDUCED THE VEHICLE SPEED AND REGAINED CONTROL OF THE VEHICLE. THE VEHICLE WAS TAKEN TO WIDE WORLD OF CARS BMW LOCATED AT (125 NY-59, SPRING VALLEY, NY 10977) TO BE DIAGNOSED. THE CONTACT WAS INFORMED THAT THE FAILURE WAS DUE TO TIRE TREADWEAR. THE TIRES WERE NOT REPLACED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 14,000.

The Front Passenger Seat Occupancy Sensor Mat (CIS) in my 2018 BMW X3 failed at 56,000 miles. This failure is confirmed by the specific BMW fault code 930A1C (Seat Occupancy Detector Malfunction) stored in the Advanced Crash Safety Module (ACSM). The component is currently installed in the vehicle and available for inspection. This defect poses a severe safety risk: the system fails to consistently detect a seated front passenger. As a result, the passenger airbag may be disabled and fail to deploy in a collision, significantly increasing the risk of injury or death. The dashboard displays a "Passenger Restraint System" malfunction warning, accompanied by an airbag light and chime. The issue is intermittent and load-dependent. It triggers specifically when an adult passenger occupies the seat for extended periods (e.g., highway driving), indicating a physical fatigue failure of the sensor mat grid under compression. I diagnosed the fault using BMW factory-level diagnostics. However, both the local BMW dealership and BMW North America have refused to cover the diagnosis or repair under the existing warranty extension (SIB 72 01 25) for this exact component, stating my specific VIN is excluded despite the vehicle exhibiting the known safety defect.

For about 1 year now when there is someone in the passenger seat the car will randomly stop recognizing the seat is occupied and deactivate the air bags on the passenger side front. I took the car to bmw where it was diagnosed as a faulty seat mat. I called bmw corporate to try to get this issue resolved and they were unable to cover it under any warranty. After the battery replacement the car has lost all communication with the passenger seat safety restraints and now has a permanent air bag light

This problem has occurred to me now twice. Both occurrences were on very cold days where the temperature was below 20 degrees F. The car starts promptly and runs, but the entire dashboard electronic instrument cluster is non-functioning and dark . In this condition, you cannot tell your speed, engine rpm, fuel level, engine temperature, or any mileage numbers. The turn signals also do not work. The headlights and the iDrive screen and the climate control were all lit properly and functioned. I did not think to check the brake or tailights, unfortunately. Multiple restarts of the car had no effect, and so I drove home without the dash functions. After the car sat overnight in my garage (which is somewhat warmer) the dash lights returned to their proper function.

Drivers left front daytime running lights failed after <4 years from warranty replacement. 3rd set of lights in under 7 years on this vehicle.

One morning, I tried to back my door out of garage and I couldn’t. I found front tire could not be turned. Found that front tire steering tie rod is snapped into 2 pieces. Further inspection showed that the steering rod had some deflects before broken. I took the photos to show the evidence.

While reversing heard a clanking noise (like a heavy wrench falling off from few feet). Came out and checked and found a broken piece of suspension coil spring near the front left wheel. Checked the inner portion of the coil with hand and felt uneven surface on the lower part of the coil similar to the unevenness on the broken part. Remaining coil is still hard to move and seems to be in place. Car is only 6 yrs old and driven for less than 35k miles. Asked around with local shops and they say with this age and miles it should not crack like this and could be a quality issue. No rust is visible and remaining part of coil looks intact. Please check photo as well.

For about 1 year now when there is someone in the passenger seat the car will randomly stop recognizing the seat is occupied and deactivate the air bags on the passenger side front. I took the car to bmw where it was diagnosed as a faulty seat mat. I called bmw corporate to try to get this issue resolved and they were unable to cover it under any warranty. After the battery replacement the car has lost all communication with the passenger seat safety restraints and now has a permanent air bag light

Passneger occupancy sensor keeps failing due to a known issue with BMW X3 G01. Seat wiring circuit keeps experiencing electrical problems and failing to detect passenger. This can lead to airbags not deploying in the event of collision. Third time the issue has been repaired and customer was responsible for almost $1200 in costs

The contact owns a 2018 BMW X3. The contact stated that while driving at an undisclosed speed, the seat belt warning light illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 55,000.

2018 BMW X3 M40I: UPON START UP THE VEHICLE DISPLAYS A WARNING 'SEATBELT RESTRAINT SYSTEM MALFUNCTION.' THE CAR THE ENTERS A LIMP MODE AND SAYS TO DRIVE TO THE NEAREST BMW SERVICE CENTER AND THAT SOME SAFETY FEATURES ARE UNAVAILABLE. POWER ASSIST STEERING NO LONGER WORKS, AND THE VEHICLE DEFAULTS TO 4WD MODE. ADDITIONALLY, IT FURTHER STATES AIRBAG FUNCTIONALITY IS LIMITED, AND CRASH AVOIDANCE IS UNAVAILABLE, BUT THAT DRIVING IS STILL POSSIBLE! WHAT'S DISTURBING IS THAT I DISCOVERED THAT MANY OTHER LATE MODEL BMW OWNERS ARE REPORTING THIS SAME ISSUE. THE FEW THAT HAVE HAD IT RESOLVED SAID IT'S A SENSOR FAILURE IN ONE OF THE FRONT SEATS. THIS SENSOR IS TIED TO THE RESTRAINT SYSTEM AND THE AIRBAG. BMW SERVICE CENTER HAS ATTEMPTED TO FIX THIS MALFUNCTION ON MY X3 ON THREE SEPARATE OCCASIONS WITHOUT SUCCESS. I AM WORRIED THAT MY AIRBAGS OR SEATBELT WILL FAIL IN A COLLISION.

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)

The contact owns a 2018 BMW X3. The contact stated while his wife was driving 65 MPH, a message advising to stop driving was displayed, and the vehicle simultaneously shifted into neutral(N) independently. The vehicle stalled in the middle of the highway and failed to respond while depressing the accelerator pedal. The message advising to drive with caution was displayed after several minutes, and the contact was able to continue driving upon depressing the accelerator pedal. The vehicle was taken to an unknown dealer to be diagnosed. The vehicle was not diagnosed or repaired. The vehicle was then towed to the local dealer, where it was diagnosed that coolant was leaking from a hose. Additionally, the dealer informed the contact that excessive engine temperature could have damaged the cylinder head and the rod bearings. The dealer recommended replacing the engine. The vehicle was not repaired. The contact stated that his son-in-law then towed the vehicle to another facility, where the vehicle was diagnosed by a mechanic; however, no engine failure or coolant leak were found. The contact related the failure to an unknown recall. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 152,942.

The windshield was replaced due to a crack from road debris. It was replaced with a Fuyoa 43R-0117043; DOT1038M544AS1. The car has head up display. The new windshield is highly reflective when driving during sunny day, and the head up display equipment is reflecting on the windshield in the middle of driver's view and very distracting. The previous windshield had a minimal reflection of head up display during daytime sun but not a driver distraction. BMW service (installed the windshield with OEM part) rep drove the car and observed the strong reflection. The service rep checked with BMW engineers who reported this is an issue they are receiving more reports about but the rep said there is nothing BMW will do in response to this safety complaint. He indicated the windshield is OEM and to specifications. There are no warning lamps or messages related to the new windshield, only this driver's observation of negative change in view while driving. The reflection does not occur when the car is in the shade.

Something is wrong with the BMW OEM windshields with HUD. I have had to completely replace 3 in 5 years. In between replacements have had Safeliite try and fill pits in it. My last windshield lasted 21 days before cracking on the side at the very edge. I was driving and the road construction had very uneven lane heights so the car was higher on the passenger side. All of the sudden I heard a crack. The was not rock or debris that hit the windshield. There have been lots of complaints about the BMW windshields with HUD especially the X series SUV’s. People are saying softer glass. All I know is this is dangerous and BMW is up charging for replacement windshields if you don’t have insurance or a warranty. The cost is in the thousands for the replacement. I’ve never had a car that had such issues with the windshield being damaged so easily and or faulty glass. My last windshield replacement was 6/29/23, cracked 7/20/23