2021 BMW X3 Problems

2021 BMW X3 M40i VIN# [XXX] Starter failed with the following BMW codes: [XXX] Starter Malfunction was displayed on the Dash and car took multiple attempts or waiting 10 seconds to start. I had the starter replaced by the Dealer, who confirmed the starter required replacing. I was told it was not part of the recall based upon VIN of car? INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact’s wife owns a 2021 BMW X3. The contact stated that while attempting to start the vehicle on several occasions, the vehicle failed to start. The message "Vehicle Failed to Start - Contact Dealer" was displayed. The contact stated that for the vehicle to start, the contact had to turn the power off in the vehicle power, lock and unlock the doors using the key fob, and then, after several attempts, the vehicle eventually started. The contact associated the failure with NHTSA Campaign Number: 26V056000 (Electrical System). The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 50,000.

The engine mounts on my BMW X3 have failed. It is a known national issue with the car, it can be exacerbated by the star/stop feature. There are no warnings or recalls and the repair is several thousand dollara.

There is an open safety recall for the engine starter on this vehicle. I contacted the local BMW dealer on 7/10/26 to have the recall fixed they advised me that they cannot address the recall because BMW North America has not sent the parts out for them to do so. I would like this on record in case there is any future damage to my vehicle due to the recall.

Lane keep assist performance has been degrading to the point that it very quickly disables itself when overcorrecting or an oscillation of the steering wheel is developed while system is trying to keep the car inside the lane (which eventually also disables the system). System always had a bit of “bounce” between the two sides of the lane and struggled to keep the vehicle exactly in the middle of the lane. But it is much worse now and I am now more often than not disabling it. System feels unsafe now. The KAFAS (camera) module is having random faults now that disable the system but go away and Lane Assist can be re-engaged without any change in the performance I described above. As an engineer I would simply call the Lane Assist control algorithm unstable with an oscillation that gets amplified. I’ve done simple tests where I center the vehicle inside the lane, engage the feature, and take my hands off the steering wheel (vehicle has some limited hands free capability—goal is to eliminate any disturbance from my hands to be the potential trigger for the oscillation). I used to be able to do this and now it rarely works and forces me to quickly take over. Another observation has been that the camera is also used to follow a vehicle ahead of me (in lieu of centering in the lane) and this rarely works now to the point of trusting it. Nothing recent has changed on the vehicle. At first I thought it may be a wheel alignment problem but when the camera module started to have sporadic errors I eliminated that root cause (recall that Lane Assist system always oscillated when engaged, but was definitely usable before). Seems like both problems originate at the camera module. Vehicle did have a windshield replacement and camera was recalibrated many months before this problem developed. Performance was the same immediately before and after replacement.

The contact owns a 2021 BMW X3. The contact stated that while reversing, the vehicle lost motive power. The check engine warning light was illuminated. The vehicle had decelerated and was jerking abnormally. There was an abnormal flickering sound coming from the vehicle. The vehicle was taken to an independent mechanic who retrieved codes related to computer failure. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 101,000.

The sunroof glass spontaneously shattered while the vehicle was in motion. There were no weather events, debris, or damage to the sunroof prior to the incident. The panoramic moonroof behind the sunroof remained intact.

The contact owns a 2021 BMW X3. The contact received notifications of NHTSA Campaign Numbers: 24V534000 (STRUCTURE) and 25V636000 (ELECTRICAL SYSTEM); however, the parts to do the recall repairs were not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure.

I am writing to report a known safety-related defect on my 2021 BMW X3, VIN [XXX]. 1 The vehicle was diagnosed at BMW of Manhasset, an authorized BMW dealer, with a coolant leak originating from the heat management module and oil filter housing. This is not ordinary wear and tear. BMW's own service bulletin SIB 11 10 25 identifies this failure mode as a known issue affecting B46/B48/B58-equipped vehicles, which includes my X3. 3 4 5 The same defect is also the subject of an active U.S. class action, XXX. v. BMW of North America, LLC (D.N.J.), covering the same engine families. This defect presents a genuine safety risk, not merely a cost issue. The oil filter housing's internal wall structures, which separate the oil and coolant passages, are prone to failing or warping, and the gaskets sealing those passages are prone to premature failure. When this occurs, coolant can leak into the oil sump or drain externally, which can cause sudden engine overheating and/or engine failure, sometimes within minutes of the leak developing. If oil escapes and contacts the hot exhaust, it can also create a fire risk. A vehicle experiencing this failure is not safe to continue driving, and the risk of sudden, catastrophic engine damage or fire warrants a recall rather than leaving affected owners to discover and pay for this known defect on their own. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

This technical failure in the BMW B58TU engine (2019–2021) involves the variable-displacement oil pump's internal thermoplastic slide. In low ambient temperatures, the high viscosity of cold oil creates mechanical stress that causes this plastic component to fracture. ​ The Safety Hazard ​The primary risk is a sudden loss of motive power. When the slide fails, oil pressure becomes unregulated or drops entirely, triggering an immediate "Drivetrain Malfunction" or engine shutdown. ​ Immobilization: Vehicles may stall in active traffic or high-speed environments without sufficient warning. ​Environmental Risk: Failures peak in extreme cold, leaving occupants stranded in freezing conditions while awaiting recovery. ​ Detection Gap: The electronic oil level sensor often fails to complete a measurement ("Measurement Aborted") before a low-pressure warning appears, depriving drivers of a clear precursor to mechanical failure. ​Critical Technical Challenges ​ Obfuscated Parts History: BMW has superseded the original plastic-vane pump with a revised metal-vane version. However, the Electronic Parts Catalog (ETK) now lists the metal version as the "original" part for affected VINs, making it impossible for owners to verify which version is physically installed without engine teardown. ​ High Repair Barrier: Correcting this defect requires extensive disassembly, often costing $6,000–$8,000. If the failure occurs at speed, total engine replacement is frequently required.

Constant emergency braking when I’m not near another vehicle.

Vehicle has consistently presented with a loud screeching noise from the brakes. When emergency braking needed, there are incidents of a slipping feel to the brakes where they do not seem as through they are applying properly. The slipping feel and noise of the brakes increases during wet/snowy weather. The noise is not a safety concern as much as the slipping feel of the brakes is significantly concerning. When emergency braking is applied, any slipping is putting my safety and the safety of passengers in my vehicle/surrounding vehicles is at high risk. Multiple service appointments surrounding this persistent problem have resulted in dismissive responses from BMW. The service center has inspected the brakes, acknowledged the loud consistent screeching noise, but BMW states the brakes are normal and the noise is expected because they are "sport brakes". BMW now recommends replacing rotors but insists it is only due to the "noise complaint". The vehicle is only serviced at a BMW dealer/service center and has been inspected by BMW. There are no warning lamps or messages related to the problem. The problem was existing when I first purchased the vehicle in 2022, was acknowledged by BMW, and has been persistently reported at every service appointment as not subsiding and in fact increasing in volume. I believe there is a manufacturing problem with the BMW x3 SAV model that impacts the braking system (brake pads and rotors), causing slipping when emergency braking is engaged and causing excessive noise from front and rear brakes.

I am reporting a potential safety defect in BMW vehicles equipped with the B58TU engine, primarily model years 2019–2021. These vehicles use an oil pump containing an internal plastic component responsible for regulating oil pressure. This component has been reported to fracture in service, resulting in sudden and complete loss of oil pressure. Failures commonly occur during cold starts in low ambient temperatures. When the component fails, oil pressure may become erratic or drop to zero with little or no advance warning. In some cases, drivers may observe warning signs such as inability to measure engine oil level electronically, abnormal oil pressure behavior, or drivetrain malfunction warnings. These conditions can rapidly escalate to engine shutdown or severe engine damage due to oil starvation. This defect presents a significant safety risk, as vehicles may become disabled unexpectedly while driving or shortly after startup. Sudden loss of propulsion increases the risk of traffic incidents, particularly if the vehicle becomes immobilized in active traffic lanes. The risk is heightened in winter conditions, when failures are more likely and occupants may be exposed to freezing temperatures while awaiting assistance. Repair typically requires extensive engine disassembly, with costs ranging from approximately $6,000 to $8,000, excluding potential engine damage. A key concern is that owners cannot reliably determine whether their vehicle is equipped with the original plastic component or a revised metal version. BMW’s VIN-based parts systems now reflect updated components even if the original part remains installed, and the original plastic component is no longer listed in dealer parts catalogs. Reports indicate failures across multiple production years, and the full scope of affected vehicles is unclear. Given the potential for sudden vehicle disablement without adequate warning, this issue warrants investigation as a safety-related defect.

My vehicle is subject to an active safety recall (NHTSA #25V-636) issued in September 2025 involving the engine starter. As of today, no remedy has been provided by the manufacturer. Due to the safety risk associated with this recall, I do not feel safe operating the vehicle and have been forced to keep it parked and unused for an extended period of time. This has caused significant financial hardship, as I am still required to make monthly loan payments, maintain insurance, and cover related expenses for a vehicle that is unsafe to drive. The issue has effectively rendered the vehicle unusable. The manufacturer has failed to provide a repair, replacement, or timeline for resolution. This situation places my safety and the safety of others at risk, as the vehicle may fail to start or function properly without warning. I am requesting immediate action, as this delay is unreasonable and creates both a safety hazard and financial burden.

The headlights will turn on and off irregularly without any drastic changes in outside lighting conditions while set in the Auto setting. No controls will be touched and the lights will turn on and off completely by themselves. It appears something is wrong with the lights switch assembly, as if something is shorting / wire is pinched. Other owners online forums have experienced similar issues as well. Can become a serious problem if it occurs while driving, especially in dark conditions.

The passenger side daylight running light stopped functioning. I called BMW dealership while it was still under warranty and was told that if it was simply a light needing replacement it would be $500. At the next oil change I had a diagnostic test done and was told that the modules for both daylight running lights had overheated and melted and that a headlight also would need replacement. The cost of this was quoted at $4,200. This is a huge safety concern as this could easily cause an electrical fire. BMW was contacted and refused to cover the cost as it was 2000 miles out of warranty when the oil was changed.

In June 2023, I purchased a vehicle from Enterprise Car Sales. Around June 2024, I reached out to them with concerns about the vehicle. They recommended I contact either the insurance or warranty company, but neither could address my issue. I then took the vehicle to the dealership, and they agreed to inspect it. They confirmed that the windshield and rear window molding trim were aftermarket parts, which were causing streaks on the window and obstructing the driver’s view. Additionally, the brakes and tires had been replaced with non-recommended parts, though I was willing to cover the cost of replacing these two items out of pocket.

Driving at highway speeds, the front sun roof exploded into the vehicle. 2nd time this has happened. Previous time was 03/2022.

Vehicle is experiencing critical mounting component failure very early on. Vehicle has under 50k miles but the engine mounts and thrush rod bushings are failing, putting the car at risk when driving or starting. It has been inspected by the dealership and the manufacturer has confirmed that the issue exists.

Both front end tie-rods had to be replaced at 28000 miles. They were making a loud popping noise when steering the vehicle on uneven pavement. The bushings on the tie-rods were worn out and could have failed at any time, resulting in a complete loss of steering control. The vehicle has not been in any accidents or received any damage to wheels and/or tires from hitting any curbs or potholes. In my opinion, this is a dangerous condition which warrants additional investigation. The repair / replacement was performed at the auto dealership where the vehicle was purchased new in April 2021.

The driver's seat frame is loose, it has a play and a when accelerating or reducing speeds. The frames produce a click and some noise is heard coming from the seat frame when accelerating or reducing speed. I am the original owner of this BMW 2021 X3.at 34,500 miles. as of this date.

The side seat rail plastic covers are easily detached from both driver and passenger side of front seats. On one occasion, the driver seat cover detached and slid forward near pedals while driving creating a potentially serious accident.

I was driving down the street from my home and I slowed down turned right and my car was out of control I steered to the curb. I got out and saw that the tire had blown-up and a large piece of the tire which was cut in half was on the ground. I couldn’t drive the car I called a tow truck driver who was there within 30 min he towed my car to BMW. It hasn’t been fully inspected I am waiting for USAA to inspect with Spectrum collision. Several people from the collision company have said it may be a tire failure.

THE CAR IS NOT STABLE ON HIGHWAYS, DRIFTS LEFT OR RIGHT, EVEN AFTER WHEEL ALIGNMENT DONE BY A BMW DEALER. CONSTANT CORRECTIONS NEEDED EVERY 5-10 SEC TO STAY IN LANE.

My vehicle is part of the cargo rails recall, how ever I also experiencing a separate safety issue with the seatbelts that I believe requires urgent attention . Seatbelts falling to block properly during sudden braking.

The contact owned a 2021 BMW X3. The contact stated while parked and occupied in the vehicle, while shifting the gear shift into park, the vehicle accelerated independently and collided with a Tesla occupied by a mom and daughter, which was in front of her. The contact mentioned that the Tesla collided with another vehicle. The vehicle then reversed independently at a high speed and then accelerated again, and collided a second time with the Tesla and then into a BMW several times. The contact, while depressing the brake pedal, the vehicle failed to respond as intended. After accelerating independently, the vehicle came to a complete stop. The contact stated that no air bags deployed. The vehicle was towed was B&D Towing, and the vehicle was then towed to Copart. The contact sustained an injury in her lower back. The contact mentioned the doctor informed her that she sustained whiplash as well. No medical attention was required. No police report was filed. The vehicle was deemed a total loss. The contact mentioned that the seat belt had retracted during the impact. The manufacturer was notified of the failure, and they informed her that they would send someone from BMW to inspect the vehicle. The approximate failure mileage was 57,303.

Car only 9 months old, tread on both front tires bald, hydroplaning on wet roads. Almost was in an accident, I travel for work and got a BMW for reliability, I’m really second guessing my choice of cars right now.Bridgestone said tread is from out of alignment. BMW checked alignment and front is spot on. 13,000 miles on tires. Horrible driving experience in such a short time. Very disappointed that BMW would put such terrible tires on.

Vehicle is not alerting driver that flat tire has occurred. Especially problematic as vehicle has run flats. Pressure sensors are working correctly, and accurately reporting PSI and temperature. Software automatically "resets" tire pressure based off of tire size and set speed, this is not something that a user can control. In other words, I can't "reset" the sensors when the tire has 10 PSI, so that it will think that that is normal. Asked if others have seen similar issues in a forum: [XXX] Right away someone else has had newer car to dealer multiple times with the same issue. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)