IllustrationDiag and replace left rear parking brake actuator pigtail. Corrosion and breaking of the wire, causing the parking brake to be stuck. This was a recall on the earlier models (2022), and seems to be an ongoing issue. It is not covered under warranty over 36k miles.
2023 Ford Mustang Mach E
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2023 Ford Mustang Mach E do not stand out strongly from the model-year median of 82.5.
About this comparison →How this year compares
Owner complaints by model year
Compare all Mustang Mach E years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 11 of 122 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Electrical System. Review the 50 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Forward Collision Avoidance. Review the 24 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Power Train. Review the 22 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
10 crash reports1 fire reports4 injury reports
Service Brakes complaints
22 reportsParking break fault message appeared on the vehicle and the parking break was stuck on, making it impossible to release the break and therefore move the car.
Dear NHTSA Team, I am writing to urgently raise concern and seek answers regarding what appears to be a systemic safety issue affecting vehicles equipped with Advanced Driver Assistance Systems (ADAS) and self-driving technologies. I have personally experienced repeated and dangerous incidents of phantom braking, overcorrect…
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Dear NHTSA Team, I am writing to urgently raise concern and seek answers regarding what appears to be a systemic safety issue affecting vehicles equipped with Advanced Driver Assistance Systems (ADAS) and self-driving technologies. I have personally experienced repeated and dangerous incidents of phantom braking, overcorrection, and loss of control while driving a 2019 Toyota Prius. The car suddenly brakes, swerves, or pulls sharply when it detects shadows, road inclinations, or mild curves — making it unsafe to drive, especially at highway speeds. These events occur without any driver error. To make things worse, this issue is not limited to one brand or vehicle. Over the past year, I have driven and rented multiple cars from different brands and models through rental companies, and many of them presented the exact same unsafe behavior — unpredictable braking, steering correction, and traction instability. This clearly indicates that the issue is industry-wide, not isolated to a single manufacturer. I have been a professional rideshare driver for over five years, completing more than 500,000 miles without a single accident or ticket. Since October 2023, these vehicle behaviors have made it nearly impossible for me to continue working safely. This situation has destroyed my livelihood — I am now three months behind on rent, my mental health has been severely impacted, and I am facing homelessness for the second time in two years. All of this has happened because of unsafe technology that drivers cannot fully disable, even when it is clearly malfunctioning. I respectfully ask NHTSA: Why are automakers allowed to release and maintain these unsafe systems on public roads? Why do drivers not have the right to safely disable malfunctioning ADAS or self-driving features, like any other electronic system that can be shut down in an emergency? When will NHTSA take meaningful action to stop these dangerous practices before more lives are affected?
I’m writing this message out of frustration, exhaustion, and genuine concern for public safety. Over the past months, I’ve been renting and driving multiple cars from different brands and models — Toyota, Subaru, Nissan, and now a 2023 Ford Mustang Mach-E — and all of them show the same dangerous behavior: •sudden phantom brakin…
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I’m writing this message out of frustration, exhaustion, and genuine concern for public safety. Over the past months, I’ve been renting and driving multiple cars from different brands and models — Toyota, Subaru, Nissan, and now a 2023 Ford Mustang Mach-E — and all of them show the same dangerous behavior: •sudden phantom braking for no reason, •traction control malfunctioning, throwing the car from side to side, •unstable handling, especially on highways or during light rain. This is not an isolated case — it’s happening across several brands and systems, which makes me question what is really going on. Why are drivers being forced to deal with unreliable technology that clearly isn’t ready for real-world conditions? Are these systems being tested using real drivers as data sources to “teach” self-driving cars how to handle special situations? Because that’s what it feels like — we are being used without consent, forced to correct constant software mistakes that could cost lives. This situation has destroyed my professional and financial stability. I work as a rideshare driver (Uber and Lyft), and passengers have reported me as “unsafe” because the car suddenly brakes or moves erratically — something completely out of my control. I’ve lost access to stable work, fell behind on my car payments, and ended up returning my own vehicle because of all the expenses and stress trying to fix something that was never broken in the first place. And I have to ask: Why did NHTSA approve a regulation that prevents drivers from fully turning off these driver assistance systems? In what world does it make sense for a safety-critical technology to have no emergency off switch? In any other context — like electricity — we have breakers to stop the system when it becomes unsafe. Cars should be no different. I’ve lost almost everything I worked for because of this. Please, take this seriously. People’s lives, jobs, and mental health are being destroyed by this technology.
While driving the 2023 Ford MachE in 1 Peddle mode Friday 12 July 2024. I had to suddenly brake due to a car cutting of the car in front of me to make an illegal turn. I applied the brakes (HARD) and my car came to a complete stop. Just as I was breathing a sigh of relief, and waiting for the still parked car in front of me …
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While driving the 2023 Ford MachE in 1 Peddle mode Friday 12 July 2024. I had to suddenly brake due to a car cutting of the car in front of me to make an illegal turn. I applied the brakes (HARD) and my car came to a complete stop. Just as I was breathing a sigh of relief, and waiting for the still parked car in front of me to move. On I released my foot of the brake (the car should have held in place). However, warning lights sensors started beeping going crazy as the car lunged forward. It caused me to hit the car in front of me. The lunge was so forceful that for a moment I thought another car had rear-ended me and pushed me into the stopped car in front of me. I did not have time to see all of the alerts flashing on the dash as they were flashing as the car was propelled forward. The other car did not sustain any damage. However my car car did. While waiting on the Police to come make a report I did use the in car engineer feedback and recorded a message notifying Ford that my car had lunged forward. On Monday 15 July I called the Ford BEV team to tell them what happened. Was advised to take it to a dealership to be checked out. The dealership ran diagnostics and updated the car via a technical service bulletin. 24-2187 issued on 07 June 2024. Prior to me taking my car to the dealership I also came to your website and there were no active recalls and no mention of this bulletin. The bulletin address the 1 pedal drive fault. I was not aware of this TSB. I have documented over 50 posts related to this error and fail.
Whenever it rains the brakes on the ford Mac-E get stuck to the rotor. The car will not move unless you apply pressure to the pedal and accelerate. The car makes a clicking noise and it’s visible damage to the rotor and stoping isn’t smooth.
This vehicle has a one-pedal drive mode that uses regenerative braking to slow / stop the vehicle when you remove your foot from the accelerator pedal. On several occasions, this system has suddenly turned off with an error message displayed on the screen. This means that the braking that I was experiencing at the moment suddenl…
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This vehicle has a one-pedal drive mode that uses regenerative braking to slow / stop the vehicle when you remove your foot from the accelerator pedal. On several occasions, this system has suddenly turned off with an error message displayed on the screen. This means that the braking that I was experiencing at the moment suddenly ceased. This is a dangerous situation that could result in an accident. Ford indicates it is a known issue, but currently does not have a fix for it.
Brakes: The brakes grab hard when coming to a stop and cause a slight jerk. I have reported this issue to the original dealership of purchase; Angela Krause Ford in Alpharetta, GA. It’s been two weeks since I purchased this vehicle brand new and I still have not been able to get it in for repair. Charge Port Door: The charge p…
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Brakes: The brakes grab hard when coming to a stop and cause a slight jerk. I have reported this issue to the original dealership of purchase; Angela Krause Ford in Alpharetta, GA. It’s been two weeks since I purchased this vehicle brand new and I still have not been able to get it in for repair. Charge Port Door: The charge port door cover came off while I was trying to close it and the clip part that connects the door to the car and locks came off (very cheaply made and other Mach E owners have suffered this same thing shortly after purchase). I can’t drive the vehicle because of the brakes issue and also because with the slightest wing going down the highway the charge port door pops open. I have it secured with a piece of tape currently but that’s still not safe or secure and the door could still fly open.
Brakes grind when coming to a stop at low speed or may not disengage from a stop at low accelerator input. Note auto hold/parking brake feature disabled. Appears to be oxidation and rough surfaces on brake rotors. Car has approximately 2700 miles and has done this since new.
After a few days in garage attempted to drive out where first upon engaging drive selection, releasing brake pedal, and slight throttle, a clunk and jerk launch occurred. With each subsequent wheel rotation there was a scraping sound synchronized with a torque dip in the propulsion. drove 1-2 blocks up street up to ~5 MPH and t…
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After a few days in garage attempted to drive out where first upon engaging drive selection, releasing brake pedal, and slight throttle, a clunk and jerk launch occurred. With each subsequent wheel rotation there was a scraping sound synchronized with a torque dip in the propulsion. drove 1-2 blocks up street up to ~5 MPH and this symptom followed exact with speed. Stopped car, tried reverse a block, same thing, surging like propulsion with apparent torque dips in sync with speed. Repeated in drive, then reverse a few times, then parked back in garage to be towed into dealer. I put masking tape on steering wheel AND on Windshield saying not to drive over 2MPH to witness the symptoms. Upon receipt at dealer, was told symptom was then repeated, therefore car would be held for a while as it would need to be torn down and analyzed to find the cause. After 3 weeks, told not yet finding the cause, we discussed possibility of brakes where they agreed and was to pull them apart to inspect. Never did. Now 4 weeks later, still at dealer, telling me they cannot repeat the effect but that drove it around. I told speed may have wiped it away, this 2nd time it was towed in for this. I consider this a safety / drivability issue and want it noted, (And fixed of course).
Official recalls
626V582000 · Electrical System:propulsion System:traction Battery:management System/energy Control Module (bms/becm):software
Sep 9, 2026
Ford Motor Company (Ford) is recalling certain 2023-2025 Mustang Mache E vehicles that received a new Battery Energy Control Module (BECM) during a prior repair. The battery energy control module software may cause an incorrect state of charge to display in the vehicle, or lead to an increased risk of a high voltage battery fire after repeated DC Fast Charging cycles.
Consequence & remedy
Consequence: An inaccurate state-of-charge reading can lead to an unexpected loss of drive power, increasing the risk of crash. Additionally, a high voltage battery fire increases the risk of injury.
Remedy: Dealers will update the BECM software, free of charge. Interim letters, notifying owners of the safety risk, are expected to be mailed October 26, 2026. Additional letters will be sent once the remedy is available, anticipated in December 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 26S68. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on September 9, 2026.
26V487000 · Structure:exterior Trim
Jul 28, 2026
Ford Motor Company (Ford) is recalling certain 2023-2025 Mustang Mach E vehicles. The rear side quarter window glass trim may be improperly secured, which can allow it to detach.
Consequence & remedy
Consequence: Detached trim pieces can create a road hazard, increasing the risk of a crash.
Remedy: Dealers will inspect and replace the quarter window glass assemblies, as necessary, free of charge. Interim letters, notifying owners of the safety risk, were mailed September 14, 2026. Additional letters will be sent once the remedy is available. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 26S56. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning September 7, 2026.
26V417000 · Power Train:driveline:differential Unit
Jun 30, 2026
Ford Motor Company (Ford) is recalling certain 2021-2023 Mustang Mach E vehicles. The rear differential pinion shaft may fracture.
Consequence & remedy
Consequence: Differential pinion shaft fracture may result in a loss of drive power, or unintended vehicle movement if the vehicle is in park without the parking brake applied, increasing the risk of a crash.
Remedy: Dealers will repair or replace the rear differential assembly as necessary, free of charge. Interim letters, notifying owners of the safety risk, were mailed July 13, 2026. Additional letters will be sent once the remedy is available, anticipated in late December 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 26S50.
25V404000 · Electrical System:body Control Module:software; Latches/locks/linkages:doors:latch
Jun 13, 2025
Ford Motor Company (Ford) is recalling certain 2021-2025 Mustang Mach E vehicles. In the event of a low battery charge, the electronic door latches may remain locked once the driver or front passenger exits and shuts the door, possibly trapping someone who is unable to use the inside door release handles, such as a child in the back seat.
Consequence & remedy
Consequence: The inability to enter or exit the vehicle in an emergency increases the risk of injury.
Remedy: Dealers will update the Powertrain Control Module (PCM) and the Secondary On-Board Diagnostic Control Module C (SOBDMC) software, free of charge. Owner notification letters were mailed to 2021-2025 Mustang Mach-E owners September 12, 2025. Additionally, Owner notification letters were mailed to 2024-2025 Mustang Mach-E owners July 10, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S65.
Additional source detail variants (2)
Electrical System:body Control Module:software
Ford Motor Company (Ford) is recalling certain 2021-2025 Mustang Mach E vehicles. In the event of a low battery charge, the electronic door latches may remain locked once the driver or front passenger exits and shuts the door, possibly trapping someone who is unable to use the inside door release handles, such as a child in the back seat.
Consequence: The inability to enter or exit the vehicle in an emergency increases the risk of injury.
Remedy: Dealers will update the Powertrain Control Module (PCM) and the Secondary On-Board Diagnostic Control Module C (SOBDMC) software, free of charge. Owner notification letters were mailed to 2021-2025 Mustang Mach-E owners September 12, 2025. Additionally, Owner notification letters were mailed to 2024-2025 Mustang Mach-E owners July 10, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S65.
Latches/locks/linkages:doors:latch
Ford Motor Company (Ford) is recalling certain 2021-2025 Mustang Mach E vehicles. In the event of a low battery charge, the electronic door latches may remain locked once the driver or front passenger exits and shuts the door, possibly trapping someone who is unable to use the inside door release handles, such as a child in the back seat.
Consequence: The inability to enter or exit the vehicle in an emergency increases the risk of injury.
Remedy: Dealers will update the Powertrain Control Module (PCM) and the Secondary On-Board Diagnostic Control Module C (SOBDMC) software, free of charge. Owner notification letters were mailed to 2021-2025 Mustang Mach-E owners September 12, 2025. Additionally, Owner notification letters were mailed to 2024-2025 Mustang Mach-E owners July 10, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S65.
25V315000 · Back Over Prevention:software
May 9, 2025
Ford Motor Company (Ford) is recalling certain 2021-2024 Bronco, F-150, 2021-2024 Edge, 2022-2025 Escape, F-250, F-350, F-450, F-550, F-600, 2022-2024 Expedition, 2022-2025 Transit, 2021-2023 Mach-E, 2024 Ranger, Mustang, 2021-2023 Lincoln Nautilus, 2022-2024 Navigator, and 2023-2024 Corsair vehicles. A software error may cause the rearview camera image to delay, freeze, or not display when the vehicle is in reverse.
Consequence & remedy
Consequence: A frozen or missing rearview camera image can reduce the driver's view behind the vehicle, increasing the risk of a crash.
Remedy: The accessory protocol interface module (APIM) software will be updated by a dealer or through an over-the-air update, free of charge. This will be a phased campaign, with the remedy becoming available in different phases based on model and model years. Interim letters notifying owners of the safety risk were mailed on June 26, 2025. Additional letters will be mailed once the final remedy is available on each phase. Owner notification letters were sent on October 8, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S49.
24V594000 · Visibility:windshield Wiper/washer:motor
Aug 9, 2024
Ford Motor Company (Ford) is recalling certain 2023-2024 Maverick, Ford Bronco Sport, and Mustang Mach-E vehicles. The front windshield wiper motor may become inoperative, causing the wipers to fail.
Consequence & remedy
Consequence: Inoperative windshield wipers can reduce visibility in certain conditions, increasing the risk of a crash.
Remedy: Dealers will inspect and replace the windshield wiper motor as necessary, free of charge. Owner notification letters were mailed on December 6, 2024. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 24S51.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
2EA25001 · Collisions Involving Ford Bluecruise
Opened Jan 17, 2025 · No close date supplied
Status: open (inferred from source dates) · Electrical System:adas
On April 25, 2024, NHTSA’s Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE24012) to assess BlueCruise, a partial driving automation system available on certain vehicles manufactured by Ford Motor Company (Ford). NHTSA opened the investigation after the agency received notice of two fatal collisions involving BlueCruise-equipped Ford Mustang Mach-E vehicles. Based on the incidents, NHTSA scoped the investigation to 2021-2024 Mustang Mach-E vehicles equipped with BlueCruise. In June 2024, ODI sent an Information Request (IR) letter to Ford requiring that it provide certain information pertaining to crashes, non-crash reports, and technical specifications that relate to BlueCruise, as well as other Ford partial driving automation systems that offer lane and speed maintenance. In its response to ODI’s IR, Ford stated that there are 2,539,962 Ford and Lincoln vehicles (including subject and peer vehicles) equipped with a partial driving automation system within the scope of the request. The majority of these vehicles are equipped with a system that Ford calls Lane Centering Assist (LCA), which is a hands-on partial driving automation system that combines longitudinal control authority governed by Adaptive Cruise Control (ACC) and lateral control authority governed by a steerable path. LCA is offered on a wide range of Ford and Lincoln models beginning in model year 2019. Vehicles that are equipped with BlueCruise, the focus of this investigation, have LCA capability and additionally offer hands-free partial driving automation when certain conditions are met. Hands-free BlueCruise operation is only offered on certain roadways and system availability is geofenced using vehicle GPS. BlueCruise-equipped vehicles employ a camera-based driver monitoring system to determine driver attentiveness to the roadway. BlueCruise was introduced in model year 2021 and is currently available in a select range of Ford and Lincoln vehicles. For BlueCruise- and LCA-equipped vehicles, both ACC and Pre-Collision Assist (PCA) features use a combination of camera and radar sensing technologies to detect and classify objects. ACC is specifically designed to detect vehicles (including cars, trucks, and motorcycles) and bicycles in front of the subject vehicle which are either stationary or moving in the same direction as the subject vehicle. Through this investigation, limitations in the detection of stationary vehicles in certain conditions have been identified. Specifically, due to the potential for false detection of stationary objects at long distances, Ford designed ACC to inhibit any response to reported stationary objects when the subject vehicle’s approach speed is at or above 62 mph. Additionally, system performance may be limited when there is poor visibility due to insufficient illumination. In addition to reviewing Ford’s response to ODI’s IR, the agency conducted a review of crash and non-crash reports identified collectively through Ford’s IR response, incident reporting through Standing General Order 2021-01 (SGO), and NHTSA vehicle owner questionnaires. In total, 32 crashes and 2,004 non-crash reports on subject and peer Ford vehicles were identified across manufacturer and ODI data sources. A detailed analysis of each crash was conducted including the review of any available police reports, photographs, data recovered from in-vehicle event data recorders, connected vehicle data, and/or other information. In both fatal collisions referenced in the PE24012 opening resume, the subject Ford Mustang Mach-E vehicle was traveling over 70 mph on a controlled-access highway during nighttime lighting conditions with hands-free BlueCruise engaged when it collided with a stationary vehicle. Analysis of data imaged from the vehicles’ event data recorders demonstrates that in each incident, the driver did not apply the brakes or take evasive steering action, and no deceleration was initiated by either the BlueCruise system or PCA prior to impact. Through the agency’s crash analysis, four additional frontal collisions were identified where the subject Ford impacted a stopped or slow-moving lead vehicle or another stationary object located in the travel lane. Two of these four incidents involved BlueCruise-equipped Ford Mustang Mach-E vehicles (included in the failure report summary along with the fatal collisions discussed above), while the other two involved other Ford models equipped with the LCA system. Additionally, a trend was identified through analysis of the non-crash reports relating to allegations that ACC (the longitudinal component of both BlueCruise and LCA) failed to detect and/or respond to a stopped or slow-moving lead vehicle. In these reports, consumers often describe that the absence of deceleration initiated by ACC was unexpected and required harsh manual braking or intervention from the PCA to avoid a frontal collision with the lead vehicle. Based on NHTSA’s analysis, system limitations relating to the detection of stationary vehicles while traveling at highway speeds and in nighttime lighting conditions appear to be factors in collisions under investigation and several apparently similar near-miss, non-crash reports. This Engineering Analysis (EA) is being opened to further investigate these system limitations and to evaluate drivers’ ability to respond to scenarios that exceed system limitations. During the EA, the agency expects to, among other things, perform vehicle evaluations, review additional technical information, and perform additional analysis of related crashes and non-crash reports. The crashes included in the failure report summary can be found at NHTSA.gov under the following SGO report identification numbers: 502-7268, 502-7426, 502-6852, 502-8738.
PE24012 · Collisions Involving Ford Bluecruise
Opened Apr 25, 2024 · Closed Jan 17, 2025
Status: closed (inferred from source dates) · Electrical System:adas
On April 25, 2024, NHTSA’s Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE24012) to assess BlueCruise, a partial driving automation system available on certain vehicles manufactured by Ford Motor Company (Ford). NHTSA opened the investigation after the agency received notice of two fatal collisions involving BlueCruise-equipped Ford Mustang Mach-E vehicles. Based on the incidents, NHTSA scoped the investigation to 2021-2024 Mustang Mach-E vehicles equipped with BlueCruise. In June 2024, ODI sent an Information Request (IR) letter to Ford requiring that it provide certain information pertaining to crashes, non-crash reports, and technical specifications that relate to BlueCruise, as well as other Ford partial driving automation systems that offer lane and speed maintenance. In its response to ODI’s IR, Ford stated that there are 2,539,962 Ford and Lincoln vehicles (including subject and peer vehicles) equipped with a partial driving automation system within the scope of the request. The majority of these vehicles are equipped with a system that Ford calls Lane Centering Assist (LCA), which is a hands-on partial driving automation system that combines longitudinal control authority governed by Adaptive Cruise Control (ACC) and lateral control authority governed by a steerable path. LCA is offered on a wide range of Ford and Lincoln models beginning in model year 2019. Vehicles that are equipped with BlueCruise, the focus of this investigation, have LCA capability and additionally offer hands-free partial driving automation when certain conditions are met. Hands-free BlueCruise operation is only offered on certain roadways and system availability is geofenced using vehicle GPS. BlueCruise-equipped vehicles employ a camera-based driver monitoring system to determine driver attentiveness to the roadway. BlueCruise was introduced in model year 2021 and is currently available in a select range of Ford and Lincoln vehicles. For BlueCruise- and LCA-equipped vehicles, both ACC and Pre-Collision Assist (PCA) features use a combination of camera and radar sensing technologies to detect and classify objects. ACC is specifically designed to detect vehicles (including cars, trucks, and motorcycles) and bicycles in front of the subject vehicle which are either stationary or moving in the same direction as the subject vehicle. Through this investigation, limitations in the detection of stationary vehicles in certain conditions have been identified. Specifically, due to the potential for false detection of stationary objects at long distances, Ford designed ACC to inhibit any response to reported stationary objects when the subject vehicle’s approach speed is at or above 62 mph. Additionally, system performance may be limited when there is poor visibility due to insufficient illumination. In addition to reviewing Ford’s response to ODI’s IR, the agency conducted a review of crash and non-crash reports identified collectively through Ford’s IR response, incident reporting through Standing General Order 2021-01 (SGO), and NHTSA vehicle owner questionnaires. In total, 32 crashes and 2,004 non-crash reports on subject and peer Ford vehicles were identified across manufacturer and ODI data sources. A detailed analysis of each crash was conducted including the review of any available police reports, photographs, data recovered from in-vehicle event data recorders, connected vehicle data, and/or other information. In both fatal collisions referenced in the PE24012 opening resume, the subject Ford Mustang Mach-E vehicle was traveling over 70 mph on a controlled-access highway during nighttime lighting conditions with hands-free BlueCruise engaged when it collided with a stationary vehicle. Analysis of data imaged from the vehicles’ event data recorders demonstrates that in each incident, the driver did not apply the brakes or take evasive steering action, and no deceleration was initiated by either the BlueCruise system or PCA prior to impact. Through the agency’s crash analysis, four additional frontal collisions were identified where the subject Ford impacted a stopped or slow-moving lead vehicle or another stationary object located in the travel lane. Two of these four incidents involved BlueCruise-equipped Ford Mustang Mach-E vehicles (included in the failure report summary along with the fatal collisions discussed above), while the other two involved other Ford models equipped with the LCA system. Additionally, a trend was identified through analysis of the non-crash reports relating to allegations that ACC (the longitudinal component of both BlueCruise and LCA) failed to detect and/or respond to a stopped or slow-moving lead vehicle. In these reports, consumers often describe that the absence of deceleration initiated by ACC was unexpected and required harsh manual braking or intervention from the PCA to avoid a frontal collision with the lead vehicle. Based on NHTSA’s analysis, system limitations relating to the detection of stationary vehicles while traveling at highway speeds and in nighttime lighting conditions appear to be factors in collisions under investigation and several apparently similar near-miss, non-crash reports. This Preliminary Evaluation is being upgraded to an Engineering Analysis (EA25001) to further investigate these system limitations and to evaluate drivers’ ability to respond to scenarios that exceed system limitations. During the EA, the agency expects to, among other things, perform vehicle evaluations, review additional technical information, and perform additional analysis of related crashes and non-crash reports. The crashes included in the failure report summary can be found at NHTSA.gov under the following SGO report identification numbers: 502-7268, 502-7426, 502-6852, 502-8738.