2023 BMW i4

I am reporting a recurring, catastrophic suspension defect in my 2023 BMW i4 eDrive40 that results in life-threatening rear tire failure. Despite adhering to all maintenance schedules, the vehicle's rear axle geometry fails to maintain stability, leading to extreme, accelerated inner-tread wear while the center and outer tread remains healthy. Timeline of Events: Initial Incident 5/4/2025 (21,493 miles): Suffered a sudden rear tire blowout while driving due to the inner tire wall wearing down to the metal cords. The dealer (BMW of Fort Lauderdale) performed an alignment and replaced the tires on my expense. Recurring Failure 3/6/2026 (35,200 miles): Less than 14,000 miles after the dealer-certified alignment, the new rear tires have reached a catastrophic state. The inner shoulders are completely bald (2.7mm inner vs 4.8mm outer), exposing the safety protector and creating an imminent risk of a second high-speed blowout. Manufacturer Response: The authorized dealer inspected the vehicle on 3/9/26 and stated the "alignment is within factory specifications," yet they refused to address why a vehicle "in spec" is destroying safety-critical components in under 14k miles. This indicates either a fundamental design flaw in the suspension components (e.g., bushings or control arms unable to support EV weight/torque) or defective factory alignment parameters provided by BMW for this specific model. Safety Hazard & Lack of Warning: This defect is a "silent killer." The failure occurs on the innermost edge of the tire, which is physically obscured by the vehicle’s body and cannot be seen during a standard walk-around. Because this EV has no regular service intervals (like oil changes), there is no professional opportunity to inspect the inner tires. A driver has no way to predict or diagnose this before a sudden, high-speed blowout occurs. BMW claims the car is "within spec," which indicates a fundamental design flaw that makes the vehicle un-roadworthy and dangerous

I was driving about 30 mph when I was prompted with the following error message, “Drive train fault, restart not possible, High Voltage Battery,” I was able to drive home which was about 1 mile away. I drove the car home, parked it and turned it off for 45 minutes then I attempted to turn it on but was unable to and continued to receive the same message. Side note, this vehicle was purchased from BMW Beverly Hills on 1/25/26 and not a month went by before I ran into this issue.

The sunroof spontaneously shattered while driving on the freeway. The sun shade was closed but had it been open, the glass would have entered the cabin and potential for harm. In addition, the loud bang was a distraction and had there been more heavy traffic there was potential for accident. There was no identified object that hit the sunroof. The car was taken to the dealership for repair and inspection.

While merging onto an interstate at speed, the vehicle experienced a sudden loss of motive power and came to a complete stop in an active traffic lane. Approximately six weeks earlier, abnormal drivetrain behavior (hesitation and torque interruption) was reported to the dealer. The dealer attributed the issue to tires and recommended tire replacement. No drivetrain diagnostics were performed. Immediately following the incident, a drivetrain malfunction warning occurred. BMW remotely restricted vehicle operation to allow limited driving back to my residence. The vehicle was later towed to the dealer. BMW subsequently confirmed catastrophic electric motor failure requiring full motor replacement. The incident created an immediate risk of collision with surrounding traffic and represents a serious safety defect involving unexpected deceleration and loss of propulsion.

On [XXX] in Columbia SC, my vehicle reported a drivetrain failure at approximately 1800 and advised me to pullover immediately and contact roadside assistance. I promptly parked in the safest space I could approximately within 50 yards of receiving the alert. The vehicle would no longer move once parked to include neutral. BMW roadside assistance took 48 hours to pick up and transport the vehicle to my dealer in Florence SC. I was informed of a recall on the vehicle by the dealership and advised they would not be able to diagnose and repair until they obtained a part from another dealer that allowed them to put it into neutral. Very few updates were provided by the dealership. On 23 December I was informed the vehicle was repaired and ready. I was informed the problem was with the 12 volt battery. The battery was not replaced as it was deemed to be functioning properly after the computer system was updated. I picked up the vehicle on [XXX] with my daughter to drive it 2 miles to our home. 1.5 mile after leaving the dealership the warning came on again causing my daughter to not be able to move the vehicle out of the road at an intersection. The car could not be put into neutral to move it. BMW roadside assistance informed it would be 48 hours before the vehicle could be towed despite me telling them that it was in the flow of traffic. They advised me to locate a tow truck and I would be reimbursed. I contacted USAA roadside and they were able to have a tow truck to the vehicle 3 hours after the failure. I consider this failure to be very dangerous as the vehicle cannot be placed into neutral to move it out of the flow of traffic. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I am reporting a recurring safety issue with my 2023 BMW i4 (VIN: [XXX] ), currently at 28,426 miles. The vehicle has experienced three separate incidents of unexpected and complete loss of power while driving. The first incident occurred in March 2025. The vehicle suddenly lost all propulsion without warning and came to an immediate hard stop. I was later informed this was related to a wheel-positioning sensor. The second incident occurred in October 2025. I had been told that a recall software update would resolve the problem, but the vehicle experienced another loss of power while in motion, showing the issue was not corrected. The third and most concerning incident occurred in November 2025. Multiple error messages appeared instructing me to stop driving immediately, and the vehicle again lost power while moving. A complete loss of propulsion in traffic—especially while merging or pulling into a roadway—creates a severe safety hazard because I am unable to move the vehicle out of the way of oncoming traffic. This puts both myself and other drivers at risk. BMW has acknowledged awareness of issues related to these systems during previous service visits, but the defect continues to occur despite attempted repairs and software updates. I am requesting that NHTSA investigate this matter, as repeated power-loss events pose a significant safety risk that could lead to crashes, injuries, or fatalities. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The sunroof of my BMW i4 exploded and shattered while I was driving under light rain on 45-mph road. The explosion was very loud and scary. Luckily sunroof sliding shade was closed otherwise shattered glass will fall inside of car.

We had a drivetrain malfunction losing all power to car as we were driving.The car lost all control and drove less than 20 feet before coming to a complete stop on the middle of the road. We were not notified about any recalls on the car and just saw there was one on your site. BMW has now had our car for 3 weeks and has had their engineers working on it saying they are testing teach individual power cell at this time. They have not provided us any feedback other than this and a timeline of when we will get our car back.

Electrical system stalling stopping the car it won’t move breaking system

While driving, the vehicle experiences intermittent braking failures, electrical glitches, and/or sudden loss of power. These issues match known problems reported on similar 2023 BMW i4 models. My VIN does not show an active recall, but I am experiencing dangerous symptoms. I am concerned for my safety and others. I respectfully request an investigation.”

The only way I could explain it was as if my brakes were failing. After joining the bmw i4 group on Facebook and having my kids record while driving. I was able to capture the issue. The vehicle drive train will malfunction causing the vehicle to move while not in motion when at a stop light. The vehicle will accelerate on its on. It has recently power off on me while driving and restart back up. I took it to the dealership they said it was fine. I took it today. They couldn’t offer me and my kid ride home or a loaner due to policy. I even asked to trade my car in. I was told that I was driving it wrong. I know my car keeps data on when these incidents occur. I have photos.

MVA: [XXX] Sudden acceleration of vehicle. Brakes failed to work. Steering suddenly inoperative. Front passenger and I were injured. Vehicle damaged 3 other vehicles. One or more drivers whose vehicles were hit complained of injuries. For inspection, contact property damage adjuster with Safeco Insurance: Collision adjuster: LYNAE MCCALL, P: 509-944-8355 Email: LYNAE.MCCALL@LIBERTYMUTUAL.COM. Complainant unaware if vehicle malfunction issues have been inspected to date by the dealer or an independent service nor inspected by the manufacturer, police, insurance representatives or others. Complainant did not see or notice any warning lamps, messages or other symptoms of the problems prior to malfunction of the vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The vehicle randomly caught fire after sitting idle for approximately 8 hours. Going to a conference in Aria Las Vegas and drove over 260 Miles. There was no issues, no indicator warning lights or strange noises during the drive. Arrived at Aira approximately 4:00PM. Parked vehicle on the third floor of the Aira Self-Parking and did not touch the car after parking the car. I received a call at approximately 12:00AM that night from Aria Security. From Aria Security, stated that vehicle has caught fire. Fire was put out by Clark County Fire department, fire report received. A whiteness who called Aria Security, stated he heard loud popping, like small explosions, from driver side front tire before the fire started. Clark County Fire Department stated fire originated on driver side front of engine area. Battery not involved. Car is total loss. BMW NA performed a visual exam only. BMW NA stated that due to damage and connectors being present, could not find cause of fire and unwilling to perform a more detailed inspection. Cause of Fire and involved components are unknown at this time.

The contact owns a 2023 BMW i4. The contact stated that while driving at 20-30 MPH with a fully charged battery, the engine seized on two separate occasions. There was an abnormal grinding sound detected. The inoperable do not drive message was displayed after the failure. The vehicle was towed to the local dealer, where it was diagnosed with drive unit failure. The drive unit, rear axle, and battery were replaced, but the failure recurred. While his son was driving at approximately 30 MPH, the engine seized. There were no warning lights illuminated. The vehicle was towed two weeks later to the local dealer again, where it was diagnosed that the drive unit and drive axle needed to be replaced. The vehicle was not repaired. The manufacturer was contacted, who opened a case; the contact requested a buyback, but no additional assistance was provided. The failure mileage was approximately 16,000.

The contact owns a 2023 BMW I4. The contact stated that while driving into a parking space, the vehicle suddenly shut off with the message "Drive Train Malfunction" displayed. The vehicle was restarted but would not shift into gear and could no longer be driven. The vehicle was towed to the local dealer. The cause of the failure was not yet determined. The manufacturer was notified of the failure. The failure mileage was 42,000.

Driving at night on [XXX] car in front of me swerved leaving a big deer in front of me on a car on my left, the BMW did not warn me, adjust speed, cinch restraints, or brake, There was no collision warning or advanced readiness at all! I hit the deer at 75 approx, went airborne and totaled my car. BMW wanted to see the vehicle and take data from it since even the cameras didn’t record, no safety features on this advanced vehicle functioned at 12,086 miles, this was an I4 M50 loaded, totaled the car INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Slowed to a stop with B mode engaged. Suddenly car lurched forward prompting me to slam on the brakes. No one was injured or vehicles damaged but it was unsettling. No warning or other issues prior to failure. No manufacture has looked at it and since it’s likely unable to reproduce often a test drive would likely not see it either.

As I was driving my car into the main avenue out of a parking lot, the car stalled and lost all power, the charge went from 57% to 0% and the power train failure warning came on the dashboard and a high voltage warning as well. The incoming traffic had to stop since I could not move the car, so I had to turn power off and power back and only then the car started to move slowly, the battery charge went up only to 37% and both warnings were displayed on the dashboard (high voltage warning and power train failure) with a message that said that it was OK to drive the car to a dealership to get the car checked.

I believe the tire size is 245 R40 19. The tires interior seams on both rear tires are coming apart. Car has just passed 21K miles, and is driven very carefully. No pothole damage either.

This is the second time the brakes failed on this vehicle. The first incident, occurring as I pulled into my garage, in May 2023, was investigated by BMW North America and the vehicle was deemed to have no defect and to be safe to drive. The second incident occurred on [XXX]. The car was traveling approximately 15-25 mph on a collector road between [XXX] in downtown Los Angeles. The car immediately in front of me applied its brakes and when I applied my brake pedal the vehicle did not respond and my car did not slow down. I did not see any sort of warning lamp on the dashboard. I hit the car immediately in front of me and that car hit the car in front of it. My airbags deployed. The car called emergency services. No one was injured. My vehicle is now being examined by BMW North America. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)