2013 BMW X3: sudden loss of power

Filed Dec 3, 2025 · Engine · MD

While driving my 2013 BMW X3 xDrive28i under normal conditions, a “drivetrain malfunction” warning suddenly appeared, immediately followed by a “low oil pressure” warning. Within seconds, the engine lost all power and shut off completely while the vehicle was in motion. I had to coast and steer the car off the roadway and push it to safety with the help of others. My safety and the safety of other drivers were at risk due to the sudden and complete loss of propulsion in active traffic. An independent BMW-trained service center confirmed that the engine suffered catastrophic internal damage caused by failure of the timing chain system. This timing chain defect is well documented in BMW’s N20 engines and is the subject of a class action lawsuit. The vehicle is now completely undriveable and remains at the repair facility. Engine replacement is the only option and is estimated between $12,000–$15,000, far exceeding the value of the vehicle. The failed engine and vehicle are available for inspection upon request. The problem has been reproduced and confirmed by an independent BMW specialist. BMW has not yet inspected the vehicle, although I did call and report to BMW North America. They have not responded to my numerous calls and outreach. No police or insurance representatives have inspected it because there was no collision, just sudden engine failure. There were no symptoms before the incident. The drivetrain and oil pressure warnings appeared only moments before the engine shut down. I had no opportunity to safely exit traffic before the vehicle lost power completely. This sudden failure due to a known engine defect presents a significant safety concern.

Filed Oct 7, 2025 · Engine · AR

I own a 2013 BMW X3 equipped with the N20 engine. After approximately 17 months of ownership and only around 11,000 miles of normal driving, the vehicle suffered a sudden and complete engine failure without warning. The independent diagnostic determined the failure was due to a timing chain and oil pump drive chain defect, which is a well-documented issue in BMW N20 engines. This defect has been acknowledged by BMW through Technical Service Bulletin SI B11 03 17 and the national class action settlement Bang v. BMW of North America. The defect causes premature wear and eventual breakage of the timing chain components, resulting in catastrophic engine damage. My vehicle is now inoperable, and the cost to repair exceeds $7,500 — far more than the vehicle’s value. There were no prior warning lights, noises, or messages. This sudden engine failure creates a safety risk, as the vehicle could lose power unexpectedly while driving. No authorized BMW dealer had ever performed timing chain replacement on this vehicle, and the issue was not disclosed at the time of sale. I am filing this complaint so the federal safety agency is aware of the widespread nature and serious safety implications of this defect.

Filed Aug 25, 2025 · Transmission · NJ

I am submitting this report to highlight a serious safety defect involving premature timing chain failures in BMW vehicles. The case relates to a 2013 BMW X3, but the problem is widely documented across multiple BMW models from this production era. The timing chain is intended to last the lifetime of the engine. If it stretches, loosens, or fails, the engine can shut down immediately, causing sudden loss of power steering, power brakes, and overall control of the vehicle. This creates an extreme risk of accidents at highway speeds or in traffic. Unlike tires or brakes, this is not a normal wear component and should not fail under ordinary driving conditions. In this vehicle, the timing chain issue was identified at under 72,000 miles. A timing chain should last well over 400,000 miles under normal operation. The premature failure reflects a design flaw, not normal aging or maintenance. The vehicle had recently undergone major servicing at a BMW authorized dealer. At that time, the timing belt and other components were replaced at significant cost. The dealership did not disclose any timing chain concerns during that service. Only shortly afterward, during a recall-related visit, did they report that the timing chain required replacement, with a repair estimate of several thousand dollars. This matter was raised with BMW of North America, including a direct letter to its CEO. BMW acknowledged receipt but declined to take responsibility, treating the matter as outside warranty coverage rather than as a safety defect. The timing chain issue is widely reported, and BMW is aware of it. The sudden engine failure that can result from this defect presents a major safety hazard that warrants the federal safety agency’s attention.

Filed Feb 7, 2025 · Transmission · MD

The component/systems affects is VANOS, exhaust: control error, camshaft is stuck; Boost pressure control: shutdown as a follow-up reaction. This is available for inspection upon request. My safety and the safety of others are at risk because the VANOS assembly (engine) bolts may, over time, loosen, and eventually break. If this occurs, a reduced engine power “safe mode” may be activated. In some cases, the engine may not be able to be restarted after switching off and, in rare cases, the engine could stall which could increase the risk of a crash. This problem has been confirmed by two BMW dealerships. After multiple visits and thousands of dollars spent on attempts at repair, the problem still exists. The resolution offered was to purchase another vehicle or spend thousands more at another attempt to remedy this problem. Although, it is my understanding that there is an open recall for this part (VANOS solenoid). The drivetrain malfunction warning appears and this problem began in July 2022.

Filed Feb 10, 2023 · Engine · FL

On Tuesday, January 31, 2023, my engine failed while driving my car. The answers to your questions regarding the incident are listed below: •Component or system that failed: The Engine failed. •Safety risk: My safety, as well as the safety of others was at risk. I was driving and suddenly without warning, I felt a strong jolt and noticed a loss of power. I looked down and noticed that my car shifted into neutral without warning. I tried to move the gear back into drive, but it would not shift. I had just enough power to glide into a parking lot and I turned the car off hoping I would restart it to place the car back into gear. After I turned the car off, it would not start and I had the car towed to the dealership. This is a dangerous safety issue and I could have been in a serious accident because my car suddenly stopped while driving. This could have placed other drivers at risk as well. After my incident, I researched the issue and discovered that other BMW X3 owners have had engine failures as well. This issue is known by BMW and they are putting their customers at risk by not issuing a recall for this problem. •Problem confirmed by dealer: Yes, the BMW dealership did confirm that it was an engine failure. Please see attached file for details. •Vehicle component been inspected: The vehicle has not been inspected by parties other than the dealership. •Prior warnings: Before my engine failed, I did not receive any warning lights or messages. Also, my car did not exhibit any other symptoms. In fact, my car was repaired for another issue two weeks before my engine failed and the dealership did not alert me to any engine issues. Lastly, they ran a diagnostic on my car when I got new brakes in December and there were no issues related to the engine.

Filed Aug 19, 2021 · Engine, Transmission · CT

More frequent drive train errors and loss of power. Cause defective timing chain guide. This seems to be very common on this year and model of BMW speaking with other BMW owners of the same car. Luckily we were not in heavy traffic and could drive to repair shop.

Filed Apr 30, 2021 · Engine, Transmission · FL

My 2013,_bmw x3 check engine light went on and I noticed power loss when it didn't drive over 40mph. I had the vehicle diagnostics done at my local bmw shop and they told me I have a bad timing chain and sprockets and gave me a bill in the thousands. I called bmw corporate and spoke to lori who is aware of the issue and said, an extended warranty was issued but that it expired in 2018. They offered me no other financial assistance because my car has 100,499 miles. So that's it a car dies at 100,000 miles and they can't help??? That's awful. There's so many complaints about this issue. My other 2007 bmw x3 huge problems too overheating, my motor mount bolt broke the engine dropped and broke the water pump. Garbage, garbage, garbage I will never buy bmw. Shame on bmw for not helping!!!! My toyota went past 200,000 miles and it's still driving.

Filed Nov 13, 2020 · Engine · FL

2013 x3 28i-drivetrain malfunction I had an issue yesterday. 2013 x3 28i; 67k miles. No warning. On expressway car feels like its losing power so I slow down to pull to side. Drivetrain malfunction warning comes on as car is dying. Had it towed to closest shop, not bwm. They say timing chain tensioner failed and likely did extensive damage to engine. Shop is quoting $2500 to replace the tensioner to see if engine is shot? Once they confirm engine is dead $10k for replacement ?? Car is out of warranty. Any help much appreciated. Thanks

Filed Sep 27, 2020 · Engine, Fuel system · 89,000 miles · MA

Car has 89000 miles. At low speeds, it drives fine. On highway, "drive train malfunction" light appears during moderate-heavy acceleration. Today, on a crowded 4 lane highway at about 70mph, car lost all power, gas pedal was useless. I was barely able to limp to breakdown lane and speed dropped to about 15-20 MPH by the time I could get there, through lots of honking and several near accidents. Extremely dangerous. I shut the car off for about 2 minutes, restarted it and it worked again. I travelled at about 55mph in right lane the next 15 miles home without issue. I was with my wife and 7 year old daughter. This is a very serious and dangerous issue to have with a car.

Filed Jul 15, 2020 · Engine · 90,000 miles · TX

On september 1, 2019, we ([xxx]) were traveling southwest on fm2322 (pace bend road), which is well travelled, at approximately 55 miles per hour in our 2013 bmw x3. The engine lost power and power steering but we were able to coast to the shoulder of the road. This road (fm2322) leads to lake travis and was well traveled, it being on a hot weekend day. At the time of this incident, bmw knew that the bmw x3's n20 engine (see multiple class action lawsuits starting in 2017) was prone to suffer catastrophic engine failure due to faulty materials used to manufacture the bmw's x3 n20 engine. To my knowledge we did not receive a notice or recall for the correction of the n20 engine defects. Redacted to protect personally identifiable information pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).

Filed Jul 3, 2020 · Electrical, Engine · 104,000 miles · CA

I was driving my 2013 bmw x3 on I-280 freeway southbound around 11am 6/10/2020, all of sudden my car shows battery discharge resulted in lost of power,when the SUV was at 104,000 miles. Within 30 seconds, the drivetrain malfunction warning engaged. The car began shutting down while they were driving on the freeway. I was able to safely navigate across two lanes of merging traffic to get off the road before the engine died. The situation could have gone very differently with disastrous results, so I quickly maneuvered the vehicle and pulled over on the emergency parking line on the freeway

Filed Jun 30, 2020 · Electrical, Engine · 68,000 miles · CA

On 6/23/20, at approx., 6:15 am, my 2013 bmw x3 vehicle (approx. 68,000 miles) lost engine power as I was attempting to pull out from a busy and congested n/b 215 freeway (near the w/b 10 freeway exchange) in colton, california. Prior to losing engine power, and at about less than one minutes before, my vehicle's low oil light sensor had come on, then quickly changed to a drivetrain malfunction sensor -- warning me to drive moderately, but that was meaningless because my vehicle had already began to lose engine power. I slid to a slow stop into the emergency lane of the freeway after cutting off numerous vehicles behind me in an effort to make it off the freeway.