2025 Acura MDX Problems

Car engine went into idle mode while the Idle Stop was engaged while stopped on an expressway off ramp. Car engine did not turn back on and entire car shut down. It took about 1 minute to re-start the car and engine. Safety was compromised because car shut off in an unsafe location. No accidents or injuries occurred. This happened about a year ago and car battery and starter were replaced by the Acura Dealer November 2025. There were no warning lights or messages prior to this problem appearing. Prior to this event, car had been slow to turn over for about 1 week. I previously submitted a complaint to NHTSA in Fall 2025, case #11694662, when this happened the first time.

I own a 2025 Acura MDX A-Spec purchased in XXX from John Eagle Acura in [XXX]. The vehicle has less than 10,000 miles. Component/system: The Auto Idle Stop/start system has malfunctioned. During the past week, the engine unexpectedly shut off while stopped at red lights and stop signs approximately 4–5 times. When it was supposed to restart, the vehicle sometimes failed to restart normally and required multiple attempts. The vehicle and components are available for inspection upon request. Safety risk: These incidents occurred at intersections while I was stopped in traffic. When the engine failed to restart, I was unable to immediately proceed while vehicles were behind me, creating a potential collision and traffic hazard. I regularly have my two young children in the vehicle, making this especially concerning. Dealer inspection: I brought the vehicle to John Eagle Acura after experiencing the problem. The service advisor indicated that this is a known issue, and the vehicle was serviced for the concern. The failure occurred repeatedly in real-world driving, but I do not know whether the dealer was able to reproduce it during inspection. Manufacturer/other inspection: The vehicle was inspected by an authorized Acura dealership. It has not been inspected by police or insurance representatives. Warnings/symptoms: I received no prior notification or warning from Acura regarding this issue. The first incidents occurred during the week before my dealership visit. The engine shut off while stopped and then did not restart normally. I did not observe a warning lamp or message specifically indicating that the vehicle would fail to restart. After experiencing the problem, I learned that NHTSA has an ongoing investigation, EA25-004, involving Auto Idle Stop failures on Honda and Acura vehicles, including 2023–2025 Acura MDX models. I am submitting this complaint so these repeated incidents can be documented as part of NHTSA's review. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 5

I own a 2025 Acura MDX A-Spec purchased in XXX from John Eagle Acura in [XXX]. The vehicle has less than 10,000 miles. Component/system: The Auto Idle Stop/start system has malfunctioned. During the past week, the engine unexpectedly shut off while stopped at red lights and stop signs approximately 4–5 times. When it was supposed to restart, the vehicle sometimes failed to restart normally and required multiple attempts. The vehicle and components are available for inspection upon request. Safety risk: These incidents occurred at intersections while I was stopped in traffic. When the engine failed to restart, I was unable to immediately proceed while vehicles were behind me, creating a potential collision and traffic hazard. I regularly have my two young children in the vehicle, making this especially concerning. Dealer inspection: I brought the vehicle to John Eagle Acura after experiencing the problem. The service advisor indicated that this is a known issue, and the vehicle was serviced for the concern. The failure occurred repeatedly in real-world driving, but I do not know whether the dealer was able to reproduce it during inspection. Manufacturer/other inspection: The vehicle was inspected by an authorized Acura dealership. It has not been inspected by police or insurance representatives. Warnings/symptoms: I received no prior notification or warning from Acura regarding this issue. The first incidents occurred during the week before my dealership visit. The engine shut off while stopped and then did not restart normally. I did not observe a warning lamp or message specifically indicating that the vehicle would fail to restart. After experiencing the problem, I learned that NHTSA has an ongoing investigation, EA25-004, involving Auto Idle Stop failures on Honda and Acura vehicles, including 2023–2025 Acura MDX models. I am submitting this complaint so these repeated incidents can be documented as part of NHTSA's review. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 5

Auto Start/Stop At stop light car wouldn’t start after engaging Auto Start/Stop, had to turn on hazards, turn car off and restart with cars bearing down on me Monday 9/14, before entering traffic I stopped and Auto Start/Stop engaged but car wouldn’t start Got a jump and brought to dealership and they replaced starter motor

Auto Stop/Start fails to restart intermittently causing dangerous situations stuck at lights unable to move. Sometimes it restarts again after pressing the brake and ignition right away. Sometimes it takes a minute to restart. Either way it happens unexpectantly leading to being frozen until you figure out what is going on.

After an auto idle stop at a major intersection, car failed to restart automatically and was left stranded unable to restart the car. Car would not shut off or turn back on when using the power button and with foot on brake but had power but it was in limp mode - transmission warnings flashed and the D "for drive" on the screen at the drivers location. I called tripleA however before they showed up I was able to put the parking brake on and turn the car off and on ad it reset. This is similar to the issue was happening with my 2017 Honda Pilot where it would stall and not restart after the auto idle stop engaged. Very dangerous and difficult to troubleshoot when in that situation, surprised that this is still happening in Honda manufactured cars - this is very dangerous and needs to be addressed and investigated.

Hello! I am writing to report an urgent and serious safety failure involving my 2025 Acura MDX A-Spec and to request immediate investigation and action. The vehicle’s driver-assist systems - specifically the lane departure warning and forward collision warning - failed to operate. In addition, both the steering wheel and the accelerator became stuck, causing my vehicle to collide head‑on with oncoming traffic. These failures placed my life and the lives of others in immediate danger. I previously opened a case with Acura Contact and Client Relations (Case #16550271). To investigate my vehicle failures that caused this major accident, the response I received was inadequate and deeply concerning. During my conversation with Acura representatives, I was told verbally without any willingness to provide this statement in writing that Acura “has nothing to do with inspecting their own car.” Instead, I was instructed to have my vehicle inspected by my insurance company, despite the fact that they are not certified to evaluate Acura safety systems and do not possess the diagnostic equipment required to assess failures of this nature. Given the severity of the malfunction and the resulting collision, I am requesting that Acura immediately arrange a proper inspection by qualified Acura technicians and provide a written explanation of how such critical safety and control systems could fail simultaneously.

Engine stalls when at intersection and the engine cuts off at idle and fails to start back up when you remove your foot from the break. Can have keep lane assist enable. KLAS mode narrow, you have to fight the wheel to maintain control of the vehicle, formal mode is a 50/50 chance it works, wide you can sift right off the road for 5-10 secs before to realize your off the road. Steer wheel control button intermittently fail and stop being able to control the midi instrument panel and infotainment system. I believe there is a systematic electrical issue in the car. They attempted to fix this by replacing a starter which hasn’t because the engine stalled at an intersection again and on cold start this morning 5/4 at the same intersection as this is by my girlfriends apartment.

20 minutes after parking my car, it would not start. Several different codes came up on the gauges - BRAKE issue; hill issue;stabilization issue - multiple icons and warnings. I ended up having to be jumped off.

Hello! I am writing to report an urgent and serious safety failure involving my 2025 Acura MDX A-Spec and to request immediate investigation and action. The vehicle’s driver-assist systems - specifically the lane departure warning and forward collision warning - failed to operate. In addition, both the steering wheel and the accelerator became stuck, causing my vehicle to collide head‑on with oncoming traffic. These failures placed my life and the lives of others in immediate danger. I previously opened a case with Acura Contact and Client Relations (Case #16550271). To investigate my vehicle failures that caused this major accident, the response I received was inadequate and deeply concerning. During my conversation with Acura representatives, I was told verbally without any willingness to provide this statement in writing that Acura “has nothing to do with inspecting their own car.” Instead, I was instructed to have my vehicle inspected by my insurance company, despite the fact that they are not certified to evaluate Acura safety systems and do not possess the diagnostic equipment required to assess failures of this nature. Given the severity of the malfunction and the resulting collision, I am requesting that Acura immediately arrange a proper inspection by qualified Acura technicians and provide a written explanation of how such critical safety and control systems could fail simultaneously.

The auto shutoff and restart system has failed multiple times causing the car to shutoff in the middle of traffic. This has happened in traffic on the interstate, on surface streets and in the drive thru line. Safety was put at risk as had to restart car in middle of traffic multiple times; once car would not restart at stop light. This could have caused an accident as vehicle was at a full stop with cars coming up from behind in the road. Dealer has replaced starter and relay twice. In less than 2 years, I'm on my third starter. Dealer has inspected vehicle multiple times. No warning messages or other symptoms before occurring. When the engine would not restart at intersection, warning message of "transmission system problem, apply parking brake when parked. See your dealer" Could not restart engine.

My 2025 Acura MDX suffers from a severe safety defect regarding the Auto Idle Stop (auto start-stop) system. When the vehicle comes to a complete stop at intersections or traffic lights, the engine shuts off as intended. However, upon releasing the brake pedal to accelerate, the engine completely fails to auto-restart.Instead of restarting, the vehicle drops out of the auto-restart sequence entirely, shifts itself out of drive, and displays a critical safety message on the dashboard: "To start engine: Brake + Push".This completely strands the vehicle in live traffic, forcing me to manually shift into Park, press the foot brake, and push the engine start button while traffic accumulates behind me. This creates an immediate rear-end collision hazard.The dealership has already attempted to diagnose and repair this issue under warranty by replacing both the vehicle's battery. This hardware replacement did not fix the problem; the failure continues to occur unpredictably less than a week (and 25 miles) after replacement. The root cause appears to be a software, Powertrain Control Module (PCM), or sensor tracking defect where the vehicle fails to recognize it is in an automated restart sequence.I am filing this complaint to be officially included in the ongoing NHTSA Engineering Analysis EA25004 regarding Honda/Acura Auto Idle Stop failures, as the current hardware recall remedies are entirely ineffective for the 2025 model year.

Hello! I am writing to report an urgent and serious safety failure involving my 2025 Acura MDX A-Spec and to request immediate investigation and action. The vehicle’s driver-assist systems - specifically the lane departure warning and forward collision warning - failed to operate. In addition, both the steering wheel and the accelerator became stuck, causing my vehicle to collide head‑on with oncoming traffic. These failures placed my life and the lives of others in immediate danger. I previously opened a case with Acura Contact and Client Relations (Case #16550271). To investigate my vehicle failures that caused this major accident, the response I received was inadequate and deeply concerning. During my conversation with Acura representatives, I was told verbally without any willingness to provide this statement in writing that Acura “has nothing to do with inspecting their own car.” Instead, I was instructed to have my vehicle inspected by my insurance company, despite the fact that they are not certified to evaluate Acura safety systems and do not possess the diagnostic equipment required to assess failures of this nature. Given the severity of the malfunction and the resulting collision, I am requesting that Acura immediately arrange a proper inspection by qualified Acura technicians and provide a written explanation of how such critical safety and control systems could fail simultaneously.

The vehicle developed repeated front‑end structural and steering problems shortly after purchase. During normal driving, it produced loud popping, creaking, and clunking noises when turning, entering driveways, or driving over small inclines. Steering felt inconsistent and the front suspension felt unstable. These symptoms created a serious risk of loss of control. A dealer confirmed the problem multiple times and replaced several major components, including the left front strut, the left front lower control arm, and the front shock absorber fork. The most serious finding was cracked welds in the front subframe, requiring the entire subframe to be replaced. A cracked subframe weld is a structural failure that can affect steering stability and crashworthiness. The issues were reproduced and documented by the dealer on multiple visits. The manufacturer’s engineering team was involved due to the severity and difficulty of diagnosis. Despite repeated repairs and extended time out of service, the same steering and suspension symptoms continued, and the vehicle was returned multiple times with ongoing issues. There were no warning lights or messages before the failures. The defects occurred during low‑speed maneuvering and normal driving conditions. The vehicle did not perform like a safe, structurally sound new vehicle, and the repeated structural and steering failures pose a safety risk to occupants and others on the road.

The vehicle developed repeated front‑end structural and steering problems shortly after purchase. During normal driving, it produced loud popping, creaking, and clunking noises when turning, entering driveways, or driving over small inclines. Steering felt inconsistent and the front suspension felt unstable. These symptoms created a serious risk of loss of control. A dealer confirmed the problem multiple times and replaced several major components, including the left front strut, the left front lower control arm, and the front shock absorber fork. The most serious finding was cracked welds in the front subframe, requiring the entire subframe to be replaced. A cracked subframe weld is a structural failure that can affect steering stability and crashworthiness. The issues were reproduced and documented by the dealer on multiple visits. The manufacturer’s engineering team was involved due to the severity and difficulty of diagnosis. Despite repeated repairs and extended time out of service, the same steering and suspension symptoms continued, and the vehicle was returned multiple times with ongoing issues. There were no warning lights or messages before the failures. The defects occurred during low‑speed maneuvering and normal driving conditions. The vehicle did not perform like a safe, structurally sound new vehicle, and the repeated structural and steering failures pose a safety risk to occupants and others on the road.

on 8/24, I purchased an acura mdx 2025 technology package.We drove home from the dealer, my mother heard a rattling noise but thought it was the car seat making the noise.The next day,I heard the noise again,it was coming from the right, rear back,I checked,and saw the wheel liner loose and thought the noise was being cause by a loose liner.My mother said we had to go back to the dealer on 8/31 to pick up the wheel lock and weather mats and we would have them check the liner.As the week went by,the noise was more often.On the way to the dealer, we could hear the noise after every bump or turning right.We gave this information to the dealer,we said we thought it was a loose liner but were not sure anymore as the rattling was more often.We did not feel safe driving home.They provided us a loaner and said they would look into it.On 9/4 they sent a text that the rear sway bar link was faulty, the part was ordered and the car should be ready by Friday.My mom emailed them to ask if by faulty,they meant it was loose or broken,they checked and said it was broken.It was expressed to them that this was concerning because it was a brand new vehicle,that we felt blessed that we decided to leave the car,had we driven back home, God knows what could have happened since a broken link can cause you to lose control and get into an accident.We asked if they would report it to the manufacturer or NHTSA? They did not reply. But text a day after stating that we must have gone through a pothole at high speed or hit something,and we were liable for the cost.After my mother sent an email and spoke with them saying that if it was not caused by us,that if the issue was there,was it caused during transporting the car from The manufacturer to the dealer?they said that the car was fixed and there would be no charge but kept insisting that we were at fault,that it happens alot,where people walk out of the dealer and come back with something broken the next day. (more to say but no space)

The contact owns a 2025 Acura MDX. The contact stated that while shifted into reverse(R), the rear-view camera display failed to function as needed. The contact stated that the vehicle failed to respond while shifted into reverse (R). The contact stated that the failure was intermittent. The contact stated there was no warning light illuminated. The contact had taken the vehicle to a local dealer who was unable to duplicate the failure or determine the cause of the failure. The vehicle was not repaired. The manufacturer was informed of the failure. The contact researched online and related the failure to NHTSA Campaign Number: 25V032000 (Back Over Prevention, Equipment); however, the VIN was not included. The failure mileage was approximately 12,000.

on 8/24, I purchased an acura mdx 2025 technology package.We drove home from the dealer, my mother heard a rattling noise but thought it was the car seat making the noise.The next day,I heard the noise again,it was coming from the right, rear back,I checked,and saw the wheel liner loose and thought the noise was being cause by a loose liner.My mother said we had to go back to the dealer on 8/31 to pick up the wheel lock and weather mats and we would have them check the liner.As the week went by,the noise was more often.On the way to the dealer, we could hear the noise after every bump or turning right.We gave this information to the dealer,we said we thought it was a loose liner but were not sure anymore as the rattling was more often.We did not feel safe driving home.They provided us a loaner and said they would look into it.On 9/4 they sent a text that the rear sway bar link was faulty, the part was ordered and the car should be ready by Friday.My mom emailed them to ask if by faulty,they meant it was loose or broken,they checked and said it was broken.It was expressed to them that this was concerning because it was a brand new vehicle,that we felt blessed that we decided to leave the car,had we driven back home, God knows what could have happened since a broken link can cause you to lose control and get into an accident.We asked if they would report it to the manufacturer or NHTSA? They did not reply. But text a day after stating that we must have gone through a pothole at high speed or hit something,and we were liable for the cost.After my mother sent an email and spoke with them saying that if it was not caused by us,that if the issue was there,was it caused during transporting the car from The manufacturer to the dealer?they said that the car was fixed and there would be no charge but kept insisting that we were at fault,that it happens alot,where people walk out of the dealer and come back with something broken the next day. (more to say but no space)

Tires have 3k miles . For the past 2 weeks, we have had a slow leak. Must refill air every 3 days. Spent one day at Tire Kingdom, but they could not detect anything. Then the Acura Dealer says there is a leak, but can't find it. We have no choice but to purchase a new tire. This is wrong - th I am retired on a fixed income and must buy a tire for a 3-month-old vehicle!

The vehicle developed repeated front‑end structural and steering problems shortly after purchase. During normal driving, it produced loud popping, creaking, and clunking noises when turning, entering driveways, or driving over small inclines. Steering felt inconsistent and the front suspension felt unstable. These symptoms created a serious risk of loss of control. A dealer confirmed the problem multiple times and replaced several major components, including the left front strut, the left front lower control arm, and the front shock absorber fork. The most serious finding was cracked welds in the front subframe, requiring the entire subframe to be replaced. A cracked subframe weld is a structural failure that can affect steering stability and crashworthiness. The issues were reproduced and documented by the dealer on multiple visits. The manufacturer’s engineering team was involved due to the severity and difficulty of diagnosis. Despite repeated repairs and extended time out of service, the same steering and suspension symptoms continued, and the vehicle was returned multiple times with ongoing issues. There were no warning lights or messages before the failures. The defects occurred during low‑speed maneuvering and normal driving conditions. The vehicle did not perform like a safe, structurally sound new vehicle, and the repeated structural and steering failures pose a safety risk to occupants and others on the road.

(1) My airbag's did not deploy when an another car drove into the front of my car causing extensive damage. It has been deemed a total loss by Liberty Mutual (claim #[XXX]) and will be towed in a day or two to their salvage yard from the auto body shop. (2) Based on what I was told by the claim adjuster, body shop and police they didn't understand why they didn't deploy, especially since one of the air bag sensors was directly in front of the impact. (3) No - Acura has not been easy to communicate with and assigned me a case #[XXX] but after I answered their questions by email a few days ago they have stopped communicating with me. (4) The car has been inspected by the body shop and Liberty Mutual. (5) No INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)