2024 Acura MDX

40 complaints on file, page 1 of 2.

1. Filed Sep 30, 2026Failure Feb 2, 2026Duluth, GAElectrical system, Engine

   VIN: [XXX]: 2024 Acura MDXComponents: Engine, Electrical System, Powertrain (Auto Idle-Stop)Ref Investigation: NHTSA EA25-004 (Upgraded from PE22-005) Dealer: Acura Carland ([XXX])SAFETY DEFECT SUMMARY:Severe safety hazard involving the Auto Idle-Stop system. The vehicle repeatedly shuts off at stops (intersections, traffic lights) and fails or struggles to restart, leaving it stranded with zero motive power in active traffic and creating immediate collision risk. DEALER FAILURE & PROTOCOL DEVIATION:Under warranty, Acura Carland diagnosed excessive starter electrical draw and replaced the starter motor. This was a superficial fix. Per Honda/Acura technical directives (e.g., TSB 23-009 / NHTSA [XXX] and [XXX]), high starter current draw during idle-stop restart stems from root mechanical drag (valve clearances) and faulty relays. Replacing only the starter ignored the root cause, leading directly to repeat failure.The identical failure recurred. Upon returning to Acura Carland, dealership personnel dismissed my concerns, disregarded published technical notices and federal investigation references, and refused to escalate to Honda Technical Information & Support (TIS) or a Field Technical Specialist.NHTSA EA25-004 NEXUS:Directly matches active investigation EA25-004 (2.2M Honda/Acura 3.5L vehicles). ODI specifically noted restart failures persist even after software updates and starter motor replacements. My vehicle demonstrates that 2024 MDX models suffer the identical vulnerability and dealers are performing inadequate component swaps. RELIEF REQUESTED:Incorporate VIN [XXX] into EA25-004.Mandate American Honda enforce root-cause dealer repair protocols (valve adjustments, starter relays).Compel a safety recall and full warranty extension covering all Auto Idle-Stop, ignition, valve train, and starter components. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

   NHTSA complaint 11767973
2. Filed Sep 3, 2026Failure Sep 3, 202621,642 milesSaint Louis, MOElectrical system, Automatic emergency braking

   The contact owns a 2024 Acura MDX. The contact stated that while driving approximately 20 MPH and driving over construction steel plates on the roadway, the brakes independently engaged while the accelerator pedal was depressed. The contact stated that the failure could have caused a rear-end crash while driving at faster speeds with other vehicles nearby and posed a risk to her 1-year-old child seated the car seat in the second-row rear seats. The BRAKE warning light was illuminated. The manufacturer was made aware of the failure by telephone. The failure mileage was approximately 21,642.

   NHTSA complaint 11761883
3. Filed Aug 25, 2026Failure Aug 15, 2026Marietta, GAVisibility/wiper

   The windshield on this 2024 MDX must be replaced because of the rear view mirror coming loose from the windshield. Acura is dragging their feet on correcting this dangerous situation of preventing the ability to see or use the rear view mirror.

   NHTSA complaint 11759431
4. Filed Aug 10, 2026Failure Jul 6, 2026Maple Valley, WABody, Unknown or other, Visibility/wiper

   I am reporting a potential safety defect involving the rear windshield glass on my Acura MDX. The rear windshield unexpectedly shattered while the vehicle was stationary, with no known impact or contact with an outside object. I was present when the glass shattered and immediately took multiple photographs and videos before the vehicle was moved. Based on what I observed, the glass appeared to break outward rather than from an outside object striking the vehicle. I later drove the vehicle from my home to the Acura dealership after being advised to do so. By the time the vehicle was inspected, portions of the shattered glass were understandably missing. The dealership later identified an area of missing glass as a possible “point of impact,” although I witnessed the event and there was no impact. I am submitting this complaint because I am concerned that the rear glass may have failed spontaneously and could represent a safety issue. Unexpected glass shattering could potentially occur while a vehicle is being driven and could startle a driver, expose occupants to broken glass, or impair visibility. I am also aware that Acura has previously issued technical service information regarding rear windshield glass on certain RDX vehicles shattering without external impact. I understand that my vehicle is an MDX and may not be covered by the same issue, but I believe the circumstances warrant documentation and review for a possible pattern.

   NHTSA complaint 11756025
5. Filed Aug 3, 2026Failure Aug 3, 2026College Grove, TNVisibility/wiper

   Went to get into my 2024 Acura MDX parked car this morning temperature around 68 degrees and noticed the back window of my 2024 MDX had shattered out. There was a large section of glass missing and the glass looks as if it was pushed from the inside out. The vehicle had not been driven or started since the last evening. It seems as though this was a problem with prior Acura models in previous years. Went to the dealer and talked to the technician who said it is not covered under Acura warranty. This is definitely a safety issue as I could have been driving down the interstate when this happened putting my life and others in danger. I can only assume this is an issue Acura is aware of with the class action lawsuit that had been filed.

   NHTSA complaint 11754436
6. Filed May 15, 2026Failure May 15, 202629,112 milesEllington,, CTSrs malfunction warning lamp/light, Sun/moon roof assembly

   The contact owns a 2024 Acura MDX. The contact stated that while driving at an undisclosed speed, a loud banging sound was heard coming from the vehicle. The contact discovered that the sunroof had unexpectedly shattered. Additionally, while driving at an undisclosed speed, a supplemental restraint system warning message intermittently displayed, advising the contact to contact the dealer. The vehicle was taken to the dealer; however, the failures could not be duplicated. The vehicle was not diagnosed or repaired. The dealer was also contacted regarding the shattered sunroof; however, the vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 29,112.

   NHTSA complaint 11738118
7. Filed Apr 30, 2026Failure Apr 13, 2026Danville, CAElectrical system, Unknown or other

   Our infotainment system stopped working and when we took it one of Acura’s authorized dealers they told us that back half of the car is flooded and that has shot down all the electronics including the infotainment system. They also gave me a bill of $10K USD to fix the leak and replaced damaged electronics. Their argument is that the car was parked outside and that caused this issue. This has never come up in any of our previous maintenance visits where Acura certified dealerships always check our car and tell us that everything is okay.

   NHTSA complaint 11734918
8. Filed Apr 6, 2026Failure Feb 26, 2026Stevens Point, WIAdaptive cruise control, Service brakes, Suspension

   Air suspension/vehicle height Brake systems were taken away (adaptive cruise, anti collision and lane mitigation) Yes confirmed by dealer Yes Yes warning lights

   NHTSA complaint 11729385
9. Filed Mar 20, 2026Failure Mar 3, 2026Brookhaven, GAEngine

   2004 MDX had digital screen problems where the screen remained black upon starting, which was hazardous as I couldn’t tell how fast I was going. After 3 visits to the dealership they identified the problem and fixed it Also, in a separate instance, car stalled after trying to start up after stop signs or while waiting in traffic several times. Could have been rear ended or worse. Dealer replaced the starter at 30k miles. Still had the same issue after this and they say the car is fine.

   NHTSA complaint 11725842
10. Filed Mar 6, 2026Failure Mar 6, 202642,000 milesWellington, FLVisibility

    The contact owns a 2024 Acura MDX. The contact stated that while the vehicle was parked, the sunroof glass shattered. No warning lights were illuminated. The vehicle remained at the residence. The vehicle was not yet diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 42,000.

    NHTSA complaint 11722485
11. Filed Jan 16, 2026Failure Jan 15, 2026Valley Stream, NYElectrical system, Service brakes, Steering

    I was driving in the far right lane on the Van Wyck Expressway when suddenly my steering wheel locked up on me along with the following error messages displayed on the odometer: 1. Collision mitigation braking system problem. See your dealer 2. Road Departure mitigation problem. See your Dealer 3. Low Speed braking control problem. See your Dealer. 4. Electric Power Steering problem. Steering assist not available. Do not drive. 5. All wheel drive system problem. Only front wheels may be powered. See your Dealer. 6. Brake system problem. Brake performance may be reduced. See your dealer. 7. Brake hold problem. Apply brake when stopped. See your dealer. 8. Vehicle stability assist system problem. Reduced traction and handling. See your dealer. 9. Hill start assist problem. Vehicle may roll upon brake release. See your dealer. Thankfully I was approaching an exit ramp and I was able to steer my MDX safely off the expressway. I parked my car on the service road, turned my hazards on and then turned the car off. When I restarted the car the error messages were gone and power steering worked as if nothing happened. Acura will be hearing from me I could’ve been in a serious accident.

    NHTSA complaint 11711323
12. Filed Nov 18, 2025Failure Nov 17, 2025San Jose, CAUnknown or other

    AC / DEFROSTER / HVAC I am reporting a potential safety and health defect involving the HVAC system in my 2024 Acura MDX. When operating the air conditioning or the front windshield defroster, a strong musty odor enters the cabin. The dealer informed me that resolving the odor requires an EVAP core cleaning, replacement of the cabin filter, and the use of a disinfectant that will be circulated throughout the ventilation system to kill mold, mildew, and other contaminants. I was told this is the “first step” in addressing the issue and that the estimated cost is $440 out of pocket. This is extremely concerning because the presence of mold or bacterial contamination inside the HVAC evaporator and ventilation system affects the air my children and I breathe inside the vehicle. Mold exposure can cause respiratory irritation, allergic reactions, headaches, and other symptoms, especially in enclosed spaces. The HVAC system in this vehicle is a sealed, manufacturer-controlled system which the owner cannot access or service, so this type of contamination should not be considered routine maintenance. I have researched this issue and found that Honda/Acura vehicles have a documented history of HVAC mold and mildew odors, and Honda has previously issued internal investigative bulletins requesting dealers to collect parts from vehicles with musty HVAC smells. There are also mold-related complaints already filed with NHTSA for the 2024 MDX model year. This suggests the possibility of a broader engineering or design issue. I need this issue addressed immediately for health reasons, and I may have to initially pay out of pocket to ensure my family’s safety. However, I believe this is a safety-related defect that Acura should be responsible for correcting, not the customer, especially on a relatively new vehicle still under warranty. I am requesting that NHTSA document this case and consider evaluating whether a pattern of HVAC mold contamination exists in newer Acura vehicles.

    NHTSA complaint 11700100
13. Filed Nov 17, 2025Failure Oct 16, 2024New Orleans, LAElectrical system, Blind spot detection, Service brakes

    Electrical, brake and car acceleration problems.

    NHTSA complaint 11699892
14. Filed Nov 13, 2025Failure Nov 7, 2025Port Lavaca, TXElectrical system, Engine

    The start/stop switch stalls the vehicle and will not restart after several tries for up to 5 minutes. We get a message during this time to "continue to drive, depress brake pedal and push switch" and even after then it still will not start for several tries. This has happened several times. One time my wife was on a heavily traveled two lane farm road at a four-way stop and it did it and was almost hit by 18 wheelers trying to navigate around her. This was not only a safety issue for her but also those trying to get around her with all the traffic coming in all direction. Took back to the dealer but it did not do it while they tried to recreate the issue. No warnings prior to the issue of dying and not re-starting. This was the latest occurrence, it had happened a couple of times before.

    NHTSA complaint 11699180
15. Filed Nov 1, 2025Failure Sep 24, 2024Brooklyn, NYService brakes

    To: Consumer Financial Protection Bureau (CFPB) Subject: Urgent Complaint – Illegal Repossession, Lemon Law Obstruction, and Compensation Claim Against Honda Financial Services Dear Sir or Madam, I am filing a formal complaint regarding the illegal repossession of my leased 2024 Acura MDX, VIN [XXX] , account number [INSERT ACCOUNT NUMBER], by Honda Financial Services. This repossession was conducted without any prior notice, without communication of the date, time, or location, and without any legal authorization or court order. 1. No opportunity to respond or act • I was outside the country at the time of repossession and had no chance to respond or protect my rights. • The vehicle was removed one day before my arrival, despite my sister attempting to coordinate that the vehicle be held because my mother is seriously ill and could not make payments. • The vehicle had been immobilized for 4 months due to brake and acceleration defects, which were part of a manufacturer recall affecting all MDX vehicles. 2. Illegal and premeditated removal • My vehicle was removed from a private garage using a towing company, without a court order, without my consent, and without legal authorization. • Video evidence clearly shows the doors were closed; the individual opened them himself, deliberately removed the license plates, and covered his face to avoid surveillance cameras. • These actions constitute intentional concealment, unlawful seizure, and theft, not a lawful repossession. 3. Obstruction of Lemon Law claim • Honda Financial never took the vehicle for inspection or repairs, deliberately preventing evidence of factory defects that rendered the vehicle unusable for over a year. • After multiple attempts to resolve the issue, Honda Financial claimed they have no record, effectively denying rightful compensation and acting in bad faith to sabotage my Lemon Law claim. 4. Violation of federal and state laws • Uniform Commercial Code (UCC) § 9-609: Prohibits reposses INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATIO

    NHTSA complaint 11696964
16. Filed Oct 5, 2025Failure Oct 5, 2025Darlington, SCUnknown or other

    Front sunroof panel spontaneously exploded while driving on the interstate highway. No impacts or other things touched the sunroof. Vehicles behind had to avoid large portions of the sunroof panel. Flying glass made it dangerous to quickly leave the highway. This is a 2024 mdx with less than 30,000 miles. Never been in an accident before.

    NHTSA complaint 11691498
17. Filed Sep 25, 2025Failure Sep 25, 2025Sicklerville, NJUnknown or other

    Heard a loud “pop” while sitting in parked car. Radio volume spiked up and the passenger side of windshield was shattered. Clear defect in installation.

    NHTSA complaint 11689725
18. Filed Sep 24, 2025Failure Aug 1, 2025Bristol, CTEngine, Power train, Vehicle speed control

    When cruising or coming off a stop, my car is incapable of accelerating promptly if I am trying to get out of the way or even merge into oncoming traffic on a highway. There is a severe acceleration delay perhaps with the throttle body. I have seen online complaints but the dealership said there has to be an actual recall number to correct this. My car has been in several times to fix this. A computer reset did not work. My car is one year old.

    NHTSA complaint 11689501
19. Filed Sep 8, 2025Failure Jun 6, 2025Houston, TXService brakesCrash

    on [XXX], I was trying to park under the shade of a tree when the vehicle suddenly surged forward, ran through the back of a big concrete dumpster retaining wall, pushed the dumpster at least 3 to 4 feet forward. It all happened so fast, I was left puzzled about why the brake failed and caused the accident and property damage. Luckily there was no personal injury to me nor anyone else, my car video showed that I narrowly missed 2 Hispanic young men standing near the dumpster ! Since the car is still under warranty, my plan was to get the car checked out by the dealership mechanic after the body shop finished with the $18,000 repair job. Then on 7/31/2025 I received a recall notice from Honda about BRAKE PEDAL PIVOT PIN may not have been staked during production. I immediately contacted State Farm and Honda. On 8/6/2025 A Honda representative, Mr. Noah, called and advised to have the car inspected by dealer for recall issue. I did not agree to it due to what I believed to be a conflict of interest : since the dealer is part of the same network with Honda ! Noah then suggested to get State Farm to request an EDR download of specific data providing insights into what happened before , during and after a collision. or I can order one myself. In accident cases involving vehicle recall, the manufacturer is considered a key party when it comes to investigation, why we consumer need to foot the bill knowing that ordering EDR is not assigned to a single party! It has been more than 3 months now since the accident, and my car is still sitting at the auto shop waiting for an EDR its data might have already been overwritten !! I have never heard from Honda again after 8/6/2025 !! They just ignored my phone calls, emails, accident video and photos totally. There were no warning lamps, message or other symptoms of the problem prior to the failure. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

    NHTSA complaint 11685790
20. Filed Aug 9, 2025Failure May 1, 2025Cary, NCElectrical system, Engine, Fuel/propulsion system

    Vehicle will suddenly shut the engine off and shift into park, even when the auto engine shut off is not active. Typically happens when stopped at a stop light. You will feel the engine shut off, and the car shift into park. It is very scary and unsafe. It has also caused the vehicle to shut off and shift into neutral while it was moving, and the vehicle gave a transmission warning. It sounds very similar to NHTSA Recall 25v-031, however, my vehicle was not included in the recall as it is not a Type S. I took it to the dealership and they said that Acura has opened an investigation due to the number of complaints, but there is no solution yet. I have not other option but to dry the vehicle, but I am worried that it is unsafe and not good for the vehicle to keep stalling the way it is.

    NHTSA complaint 11679550