FaultScore

FaultScore report

2025 Acura MDX problems

Owners have filed 151 complaints about the 2025 Acura MDX with NHTSA between 2024 and 2026. The largest single group is the engine & cooling. Across this model's run it ranks 17 of 24 worst.

C

FaultScore 49/100

Higher is worse. Measured against the other years of the Acura MDX.

How this is worked out

The numbers

151

Complaints

5

Crashes reported

0

Fires reported

4

Injuries reported

14,000 mi

Median mileage at failure

Half of reported failures happened before this

100%

Failed under 36,000 miles

Inside a typical bumper-to-bumper warranty

NHTSA overall crash rating

From the agency's own crash tests

What kind of bad

The letter says how bad. This says what kind — whether this year drew an unusual number of complaints, unusually dangerous ones, or failures that arrived unusually early.

Complaint volume 39 vs 50 Severity 31 vs 50 Early failure 100 vs 50
The dashed ring is 50 — the national norm. Further out is worse.
Complaint volume — 39
Against the median year of the Acura MDX. 50 means typical for this model; 100 means roughly double.
Severity — 31
6% of these complaints involved a crash, fire, injury or death, against a national rate of 9.7%.
Early failure — 100
100% of failures with a mileage on record happened under 36,000 miles, against a national rate of 29%.

How 2025 compares with every other Acura MDX

Click any bar to open that year's report.

Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks on a 2025 Acura MDX

Every complaint is filed against a part. Follow any row for the complaints about that part alone.

Engine & Cooling 56 37.1%

Median failure at 14,000 miles

Median failure at 15,700 miles

Median failure at 15,000 miles

Driver Assist & Collision Avoidance 8 5.3%

2 crashes, 0 fires · median 12,000 mi

Brakes 4 2.6%

1 crashes, 0 fires

Steering 3 2.0%

1 crashes, 0 fires · median 15,027 mi

Suspension 2 1.3%
Transmission & Drivetrain 2 1.3%
Equipment & Accessories 1 0.7%

Median failure at 12,000 miles

Wheels 1 0.7%
Tires 1 0.7%
Body & Structure 1 0.7%
Airbags 1 0.7%

1 crashes, 0 fires

NHTSA crash tests

The agency crash-tested this model year itself. These are its own photographs and star ratings.

Frontal crash test of a 2025 Acura MDX SUV FWD

Frontal crash test

Side barrier crash test of a 2025 Acura MDX SUV FWD

Side barrier crash test

Side pole crash test of a 2025 Acura MDX SUV FWD

Side pole crash test

Photographs taken by NHTSA during its own New Car Assessment Program crash tests of this model year. Public domain.
Configuration Overall Front Side Rollover
2025 Acura MDX SUV FWD
15.1% risk
2025 Acura MDX SUV AWD

When owners complained

A spike years after the car went on sale usually means a part wearing out on schedule across the whole fleet — the kind of pattern no single owner can see from inside their own car.

Sep 2024 peak 25 Aug 2026

NHTSA investigations into the 2025 Acura MDX

An investigation is the step before a recall: the agency has seen enough complaints to look into a pattern itself. An open one means it thinks something may be wrong and nothing has been fixed yet.

1 investigation is still open.

EA25004 Opened 26 Mar 2025 Still open ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR

No Restart After Auto Start/Stop Engages

On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to r...

Recalls on the 2025 Acura MDX

A complaint is one owner's allegation. A recall is the point at which the manufacturer or a regulator agreed the defect is real and dangerous enough to fix for free — however old the car is.

United States — NHTSA

26V332000

AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER

Honda (American Honda Motor Co.) is recalling certain 2018-2021, 2023 Acura TLX, 2019-2024 RDX, 2017-2020, 2022-2026 MDX, 2017-2021, 2023, 2025 Honda Ridgeline, 2017-2022 Pilot, 2019-2021 Passport, 2018-2026 Odyssey, 2019-2022 Insight, 2019-2021 HR-V, 2018-2020 Fit, 2020-2022 CR-V Hybrid, 2017-2022 CR-V, 2017-2018, 2021 Civic Type R, 2017-2021 Civic hatchback, 2016-2020 Civic coupe, 2016-2022 Civic, 2017-2022 Accord Hybrid, and 2016-2022 Accord vehicles. The front passenger seat weight sensor may crack and short circuit, which can cause the air bags to deploy unintentionally during a crash.

Risk: Air bags that deploy unintentionally during a crash increase the risk of injury.

25V391000

SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES

Honda (American Honda Motor Co.) is recalling certain 2021-2025 Acura TLX, 2023-2025 Acura MDX, and 2023-2025 Honda Pilot vehicles. The brake pedal pivot pin was not secured properly, which can cause the pedal to shift out of position. As such, these vehicles fail to comply with Federal Motor Vehicle Safety Standard numbers 108, "Lamps, Reflective Devices, and Associated Equipment" and 135, "Light Vehicle Brake Systems."

Risk: A brake pedal that shifts out of position can prevent the driver from applying the brakes as intended, increasing the risk of a crash or injury.

25V032000

BACK OVER PREVENTION:SOFTWARE

Honda (American Honda Motor Co.) is recalling certain 2025 Acura MDX vehicles. The touchscreen in the center console may go blank, resulting in the rearview camera image not displaying as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."

Risk: A rearview camera that does not display an image can reduce the driver's rear view, increasing the risk of a crash.

Canada — Transport Canada

Canada runs its own recall programme, and its campaigns do not always mirror the American ones.

Recall 2025318 15,574 units in Canada

Brakes

Issue: On certain vehicles, the brake pedal assembly may not have been manufactured properly. As a result, the brake pedal could move and cause you not to be able to apply the brakes properly, or to apply the brakes unexpectedly. This could also cause the brake lights to turn on without pressing the brake pedal. Safety Risk: Reduced braking and/or braking unexpectedly could increase the risk of a crash. Additionally, brake lights that turn on without the brake pedal being pressed could cause others not to recognize when the vehicle is braking or not braking and increase the risk of a crash. Corrective Actions: The company will notify owners by mail and advise you to take your vehicle to a dealership to inspect and, if necessary, replace the brake pedal assembly.

Recall 2025029 16,977 units in Canada

Fuel System

Issue: On certain vehicles, a software problem in the fuel injection electronic control unit could cause the engine to stall while driving. Safety Risk: A sudden loss of power to the wheels could increase the risk of a crash. Corrective Actions: Honda will notify owners by mail and advise you to take your vehicle to a dealership to update the fuel injection electronic control unit software.

Recall 2025028 829 units in Canada

Visual System

Issue: Under certain conditions, a software problem could cause the center information display to go blank. As a result, the rearview camera image would not appear on the display when the transmission is shifted into reverse. Safety Risk: A rearview camera image that doesn't display could reduce a driver's ability to see behind the vehicle while backing up. This could increase the risk of a crash. Corrective Actions: Honda will notify owners by mail and advise you to take your vehicle to a dealership to replace the center display assembly.

Recalls cover specific build ranges, so check your own vehicle by VIN at nhtsa.gov/recalls or, in Canada, Transport Canada.

Complaints that involved harm

Reports where the owner recorded a crash, a fire, an injury or a death.

Skokie, IL Crash 4 injured

STEERING

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.

NHTSA complaint #11757146 — an unverified report by a vehicle owner.

Skokie, IL Crash 4 injured

SERVICE BRAKES

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.

NHTSA complaint #11757146 — an unverified report by a vehicle owner.

Skokie, IL Crash 4 injured

FORWARD COLLISION AVOIDANCE: WARNINGS

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.

NHTSA complaint #11757146 — an unverified report by a vehicle owner.

Chesapeake, VA 1 injured

UNKNOWN OR OTHER

Sunroof exploded while driving on the interstate. A loud noise and glass was everywhere inside the truck on my passenger and I. The distraction caused me to slam on brakes injuring my foot in which I’m out of work for 4 weeks

NHTSA complaint #11710838 — an unverified report by a vehicle owner.

Yonkers, NY Crash

AIR BAGS

(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)

NHTSA complaint #11662340 — an unverified report by a vehicle owner.

Yonkers, NY Crash

FORWARD COLLISION AVOIDANCE: WARNINGS

(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)

NHTSA complaint #11662340 — an unverified report by a vehicle owner.

The most recent complaints

In the owners' own words, exactly as filed with NHTSA.

South Jordan, UT

UNKNOWN OR OTHER

2025 Acura MDX – Auto Idle Stop Failure to Restart When my 2025 Acura MDX is stopped at a traffic light and the Auto Idle Stop system activates, the engine shuts off but on multiple occasions has failed to restart when traffic begins moving. The vehicle becomes immobilized in an active traffic lane. Vehicles behind me begin moving and honking while I am unable to move the vehicle. To regain operation, I have had to completely shut the vehicle off and restart it while stopped in traffic. I can prevent the occurrence by manually disabling Auto Idle Stop after starting the vehicle, but this requires me to remember to disable the system every time I drive. If I forget, I risk the vehicle shutting down and failing to restart at an intersection. This creates a serious safety concern for me and my passengers, including my child. I am concerned about being stranded in an intersection or other active traffic lane and potentially being struck by another vehicle. I believe the Auto Idle Stop system's failure to restart the engine presents an unreasonable safety risk and should be investigated.

NHTSA complaint #11758463 — an unverified report by a vehicle owner.

South Jordan, UT

ELECTRICAL SYSTEM

2025 Acura MDX – Auto Idle Stop Failure to Restart When my 2025 Acura MDX is stopped at a traffic light and the Auto Idle Stop system activates, the engine shuts off but on multiple occasions has failed to restart when traffic begins moving. The vehicle becomes immobilized in an active traffic lane. Vehicles behind me begin moving and honking while I am unable to move the vehicle. To regain operation, I have had to completely shut the vehicle off and restart it while stopped in traffic. I can prevent the occurrence by manually disabling Auto Idle Stop after starting the vehicle, but this requires me to remember to disable the system every time I drive. If I forget, I risk the vehicle shutting down and failing to restart at an intersection. This creates a serious safety concern for me and my passengers, including my child. I am concerned about being stranded in an intersection or other active traffic lane and potentially being struck by another vehicle. I believe the Auto Idle Stop system's failure to restart the engine presents an unreasonable safety risk and should be investigated.

NHTSA complaint #11758463 — an unverified report by a vehicle owner.

South Jordan, UT

ENGINE

2025 Acura MDX – Auto Idle Stop Failure to Restart When my 2025 Acura MDX is stopped at a traffic light and the Auto Idle Stop system activates, the engine shuts off but on multiple occasions has failed to restart when traffic begins moving. The vehicle becomes immobilized in an active traffic lane. Vehicles behind me begin moving and honking while I am unable to move the vehicle. To regain operation, I have had to completely shut the vehicle off and restart it while stopped in traffic. I can prevent the occurrence by manually disabling Auto Idle Stop after starting the vehicle, but this requires me to remember to disable the system every time I drive. If I forget, I risk the vehicle shutting down and failing to restart at an intersection. This creates a serious safety concern for me and my passengers, including my child. I am concerned about being stranded in an intersection or other active traffic lane and potentially being struck by another vehicle. I believe the Auto Idle Stop system's failure to restart the engine presents an unreasonable safety risk and should be investigated.

NHTSA complaint #11758463 — an unverified report by a vehicle owner.

at 17,400 miles Staten Island, NY

ELECTRICAL SYSTEM

The contact owns a 2025 Acura MDX. The contact stated that while at a stop, the vehicle lost automotive power, and all electrical features turned off. The vehicle was restarted and the battery warning light illuminated. The contact continued to drive the vehicle. The vehicle was taken to a local dealer where it was diagnosed, and the contact was informed that no cause for the failure was found. The contact stated that upon starting the vehicle, the vehicle was idling roughly. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 17,400.

NHTSA complaint #11758335 — an unverified report by a vehicle owner.

Tacoma, WA

ENGINE

The vehicle intermittently fails to restart after the Auto Idle Stop system shuts the engine off at a traffic stop. When this occurs, the vehicle remains disabled until it is manually restarted. This has now happened repeatedly, including twice within one recent week. The vehicle was purchased new on November 27, 2024, and currently has approximately 27,500 miles. The repair history for this same issue is: •September 19, 2025 — 13,841 miles: Battery replaced. •January 27, 2026 — 18,481 miles: Battery replaced again. •February 4, 2026 — 18,814 miles: Starter replaced. •August 14, 2026 — approximately 27,500 miles: Vehicle returned again for the same continuing problem. Diagnostics were performed, but no repair or resolution was provided. Despite replacement of two batteries and the starter, the defect continues. Our most recent experience with the dealership was particularly concerning. We were essentially told that they could not identify the problem and could not provide any further solution. That is not an acceptable outcome for a vehicle that can shut itself off while stopped in traffic and then fail to restart.

NHTSA complaint #11757405 — an unverified report by a vehicle owner.

Skokie, IL Crash 4 injured

STEERING

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.

NHTSA complaint #11757146 — an unverified report by a vehicle owner.

Cream Ridge, NJ

UNKNOWN OR OTHER

The auto start stop shut down the car when stopping at a red light and had to fully restart the car. This has happend several times since I owned the car. Its a safety issue is you need to move the car in an emergency or potential to reended by traffice behind you that assumes you are moving at a light. In addition on restart of the car at times the car struggles to restart like the battery is weak or starter is bad. Again more of a safety issue and potential accident.

NHTSA complaint #11757152 — an unverified report by a vehicle owner.

Poestenkill, NY

ELECTRICAL SYSTEM

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.

NHTSA complaint #11757151 — an unverified report by a vehicle owner.

Poestenkill, NY

ENGINE

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.

NHTSA complaint #11757151 — an unverified report by a vehicle owner.

Skokie, IL Crash 4 injured

SERVICE BRAKES

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.

NHTSA complaint #11757146 — an unverified report by a vehicle owner.

Poestenkill, NY

FUEL/PROPULSION SYSTEM

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.

NHTSA complaint #11757151 — an unverified report by a vehicle owner.

Skokie, IL Crash 4 injured

FORWARD COLLISION AVOIDANCE: WARNINGS

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.

NHTSA complaint #11757146 — an unverified report by a vehicle owner.

Sammamish, WA

ENGINE

The automatic engine shutoff turned off the engine three times at stop lights and failed to restart. We were left stranded in the middle of the road, cars zipping by us fast. We felt very much at risk of being hit.

NHTSA complaint #11757065 — an unverified report by a vehicle owner.

Yonkers, NY

ENGINE

My vehicle is equipped with the auto stop, idle/start feature. I have had my vehicle completely shut off at least 6 times when I am at a complete stop. I have researched this problem among 2025 Acura MDX owners and it seems to be a recurring problem. The feature is suppose to save gas when I am at a stop and shut down the engine and then restart when I press the gas pedal but that is not happening.

NHTSA complaint #11756817 — an unverified report by a vehicle owner.

at 11,000 miles Chicago, IL

ELECTRICAL SYSTEM

The contact owns a 2025 Acura MDX. The contact stated that while the vehicle was stopped at a stoplight, the START/STOP system failed to operate as designed and the vehicle turned off unintendedly. The vehicle was restarted to continue driving. The vehicle was taken to the dealer, who replaced the starter and battery, and other unknown parts were also replaced. The failure reoccurred once while idling in stop-and-go traffic on the highway. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure, and a case was opened. The failure mileage was approximately 11,000.

NHTSA complaint #11756420 — an unverified report by a vehicle owner.

Modesto, CA

ENGINE

I am reporting a safety issue with my 2025 Acura MDX involving the Auto Idle Stop/Start system. When the vehicle comes to a stop and the Auto Idle Stop system shuts the engine off, the engine does not always restart as it is supposed to. When this occurs, pressing the START/STOP button does not immediately restart the vehicle. This has left me unable to move the vehicle normally after the engine shuts off and creates a serious safety concern, particularly when stopped in traffic or at an intersection. I have reported this problem to my Acura dealership numerous times. I have been told that Acura is aware of the issue but has not developed a solution. Despite my repeated complaints, the problem remains unresolved. My vehicle currently has approximately 22,000 miles. I am concerned that the vehicle may fail to restart after Auto Idle Stop activates and leave me stranded in an active traffic lane or intersection, creating a risk of a collision. I am requesting that NHTSA document and investigate this safety issue involving the 2025 Acura MDX.

NHTSA complaint #11756581 — an unverified report by a vehicle owner.

Buffalo, NY

UNKNOWN OR OTHER

My vehicle was stopped at a busy intersection, idling in the automatic stop mode. When my husband moved his foot from the brake to the accelerator, the car stalled, orange alarm alerts went off, and the car was completely dead and stalled without power. The car needed to be restarted, and it took a few attempts to accomplish that task. I have had the same problem before with this car and have had it into the dealer at least two times without resolution.

NHTSA complaint #11756035 — an unverified report by a vehicle owner.

Buffalo, NY

ENGINE

My vehicle was stopped at a busy intersection, idling in the automatic stop mode. When my husband moved his foot from the brake to the accelerator, the car stalled, orange alarm alerts went off, and the car was completely dead and stalled without power. The car needed to be restarted, and it took a few attempts to accomplish that task. I have had the same problem before with this car and have had it into the dealer at least two times without resolution.

NHTSA complaint #11756035 — an unverified report by a vehicle owner.

Buffalo, NY

FUEL/PROPULSION SYSTEM

My vehicle was stopped at a busy intersection, idling in the automatic stop mode. When my husband moved his foot from the brake to the accelerator, the car stalled, orange alarm alerts went off, and the car was completely dead and stalled without power. The car needed to be restarted, and it took a few attempts to accomplish that task. I have had the same problem before with this car and have had it into the dealer at least two times without resolution.

NHTSA complaint #11756035 — an unverified report by a vehicle owner.

New Albany, OH

UNKNOWN OR OTHER

Auto Idle Restart failed three times in traffic at red light. Have to shift to Park and push Start button. Nothing happens for several seconds, then engine starts.

NHTSA complaint #11755686 — an unverified report by a vehicle owner.

New Albany, OH

ELECTRICAL SYSTEM

Auto Idle Restart failed three times in traffic at red light. Have to shift to Park and push Start button. Nothing happens for several seconds, then engine starts.

NHTSA complaint #11755686 — an unverified report by a vehicle owner.

New Albany, OH

ENGINE

Auto Idle Restart failed three times in traffic at red light. Have to shift to Park and push Start button. Nothing happens for several seconds, then engine starts.

NHTSA complaint #11755686 — an unverified report by a vehicle owner.

at 14,000 miles Bryant, AR

ELECTRICAL SYSTEM

The contact owns a 2025 Acura MDX. The contact stated that while at a complete stop at a traffic light, the vehicle unexpectedly shut off and failed to restart. After approximately 15 minutes, the vehicle restarted, and the contact drove into a parking lot before driving to the residence. No warning lights illuminated. The dealer was notified of the failure the following day, and a service appointment was scheduled. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 14,000.

NHTSA complaint #11755315 — an unverified report by a vehicle owner.

at 14,000 miles Bryant, AR

ENGINE

The contact owns a 2025 Acura MDX. The contact stated that while at a complete stop at a traffic light, the vehicle unexpectedly shut off and failed to restart. After approximately 15 minutes, the vehicle restarted, and the contact drove into a parking lot before driving to the residence. No warning lights illuminated. The dealer was notified of the failure the following day, and a service appointment was scheduled. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 14,000.

NHTSA complaint #11755315 — an unverified report by a vehicle owner.

Webster, TX

UNKNOWN OR OTHER

While at a stop light, the vehicle had automatic start/stop on and failed to restart when the gas pedal was applied. The car went into park but still seemed like it was on, even though it was not. I had to remain calm, put on my hazards, and attempt a couple of times to reboot the vehicle. This has happened at least three times since I purchased my 2025 Acura MDX in November 2025.

NHTSA complaint #11754284 — an unverified report by a vehicle owner.