What component or system failed or malfunctioned, and is it available for inspection upon request? - Periodically After Auto Start Stop System activates (vehichle shuts down after stop). When the brake pedal is released and vehicle attempts to restart the engine stalls and is shifted into neutral. How was your safety or the safety of others put at risk" - UNK Has the problem been reproduced or confirmed by a dealer or independent service center" - No, this is an intermittent issue, this has occurred a few times (6). Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others" - No, email sent to service department. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear" - Parking light, Brake system light, Oil pressure light, battery light.

- Quincy, MA, USA

I was in RED light and Car went to Idle Stop. I got Green Light but the Car automatically went to Neutral mode and did not back to Drive mode when I changed. I put emergency light on but People do not have any patience and Horn me in the light.. I tried many times to put Drive mode and it did not work. After turn off/on the engine few times finally it worked. It was very scary if I would have struck in middle of the Highway with family it would be very bad. I called the Acura Service center they act like they did not aware of this issue. I have setup appointment this week for diagnosis.

- Cumming, GA, USA

Multiple times when I have come to a stop (traffic light, stop sign, etc.) my MDX has shifted itself into "Neutral" and it appears the engine has cut off by the battery power is still on, my MDX will not shift back into "Drive" or "Park"; I then have to press then "Engine On" button multiple times to get the battery power to shut off and then I can restart my MDX and then my MDX will shift into "Drive." I took it to my Acura Dealer and they said they checked it and there was nothing wrong and they also told me there had not been any recalls on my MDX.

- Oklahoma City, OK, USA

While driving, in the middle of the high way, the car shuts off and stops and when restarted it wouldn-??t go. Stopped, twice this month and three time total this year, on the Highway thank god no accident.

- Woodbridge , VA, USA

Twice at a stop light the car went into neutral by itself which then required me to go put in park then drive. One time a police officer was nearby and pulled me over after, asking if everything was ok since I was stopped at the light for a prolonged period of time. I took it to the dealership and they said it was the battery and replaced under warranty. Battery should not go when car has less than 30k miles. I checked forums and many people have experienced this issue. There are too many other complaints on line not to bring this to your attention. It has happened already. It is very nerve racking to be at a stop, hit the gas and go nowhere when traffic is quickly approaching from behind. This will eventually lead to someone getting rear ended.

- Huntington, NY, USA

Starting around 20,000 miles, my car started to majorly hesitate when I would step on the pedal trying to accelerate. Over time the problem became increasingly worse to the point where the car would slip into neutral causing a major hazard driving on the tollway when my car would decelerate when stepping on the gas pedal. This has caused me to have several very close near accidents. The dealership would keep saying that they could not replicate the problem. I have taken my car in on 8 separate occasions for this safety concern (4 different Honda/Acura dealerships trying to get help since the place I bought the car wouldn-??t not help with a solution.) My car has also begun back rolling (15+ feet) when in drive. And yesterday, suddenly accelerated from 0 to 35 when waiting for our driveway gate to open. There are major issues with sudden acceleration when driving a speeds under 20mph and deceleration issue when stepping on the gas pedal trying to accelerate. I have opened a report with Honda over a year ago and keep getting the run around.

- Carrollton, TX, USA

The contact owns a 2020 Acura MDX. The contact stated while driving 30-35 MPH, the accelerator pedal was depressed but the vehicle failed to respond and would not move. There were several unknown warning lights illuminated. The contact stated that after depressing the drive button several times, she was able to drive the vehicle. The vehicle was taken to the dealer who determined that the contact had inadvertently depressed an unknown button on the steering wheel causing the vehicle to shift to neutral. The vehicle was not repaired. The contact stated that the failure recurred while driving. The contact was able to restart the vehicle and drove to her destination. The contact stated the failure persisted. The contact stated that the vehicle inadvertently stalled while driving. Several unknown warning lights illuminated. The contact was unable to restart the vehicle or veer to the side of the road. The vehicle was towed to the dealer but was not diagnosed nor repaired. The contact referenced NHTSA Campaign Number: 21V215000 (Fuel System, Gasoline) as a possible solution to the failure. The manufacturer was not notified of the failure. The approximate failure mileage was 3,000.

- Coconut Creek, FL, USA

I have experienced sudden acceleration problem numerous times( 5 to six times. The latest one was March 1,2021. The vehicle would accelerate (RPM rapidly ) suddenly when driving at low speeds(around 10 to 15mph to a quick almost 30mph without pressing the gas pedal) that always require me to break immediately to avoid any accidents. I had the vehicle checked thoroughly by a company sent expert last year(sometime Nov,2020) and they can't replicate the problem. Acura relations can't help me anymore. It made me google unintended acceleration MDX. The problem is for real. Had I known this problem, I wouldn't have leased this vehicle last Oct.31, 2019. Please help. Many thanks

- Winter Garden, FL, USA

1. (July 8, 2020) on 1 occasion within a short time after purchasing MDX, I floored the gas pedal on the highway as when passing another car, let off the gas pedal and the engine kept running as though the gas pedal was still floored. Reported it to dealer and they said they could not duplicate the problem and said maybe the floormat caused the problem. Potentially dangerous. 2. (July 8, 2020) on an incline at a stop sign, MDX will roll backwards after releasing brake and then when pressing on the gas pedal it will lurch forward. Reported it to the dealer. Potentially dangerous. 3. when stopped and then trying to backup on an incline, MDX won't move rearward until gas pedal is pressed approximately 1/4 to 1/3 of full gas pedal movement. It acts as though the braking system is partially applied. This only happens on an incline, not on level ground.

- Hendersonville, NC, USA

The car does have smooth accelerating from a stop; it feels as if its searching through gears. In addition, while driving a humming noise is present as if the battery or electric parking bake is being engaged or disengaged. The car idles when at a complete stop instead of engaging auto shut off feature.

- York, PA, USA