general problems of the 2020 Acura MDX

12 problems related to vehicle speed control have been reported for the 2020 Acura MDX. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2020 Acura MDX based on all problems reported for the 2020 MDX.

1 Vehicle Speed Control problem

Failure Date: 02/26/2026

I start getting every kind of warning on my dashboard - collision mitigation system problem -auto crues control problem -brake system light on - the car apply brake on the miidle of street/highway.

2 Vehicle Speed Control problem

Failure Date: 09/01/2025

I was driving on a normal sunny day when every light on my dashboard came on. I initially panicked thinking my car was going to shutoff while I was driving it. This is in conjunction with the car stalling out when the auto shutoff feature malfunctions. After researching the issue, I realized the safety camera was no longer working and a major concern. A malfunctioning front camera can prevent the vehicle from automatically braking or maintaining lanes, hence increasing the risk of collision. I am requesting that NHTSA investigate the front multi-purpose camera system on the 2020 Acura Mdx for potential defect and safety hazard.

3 Vehicle Speed Control problem

Failure Date: 08/27/2025

1. The car accelerates by intself. The accelaration is like "hiccups". When reversing and changing to d gear, it takes longer than usual for the accelarion to take effect. Yes, car is available for inspections 2. It is dangerus because it gets the hiccups even at high speeds. If it is a serious egine problem, which seems like it is, could cause an accident. 3. The car was taken to the dealership for 3 recalls but it got worse after the recalls were fixed. Supposedly the recalls were supposed to fix the issues. We have not taken it back yet. 4. There is no lights or warnings when it does it.

4 Vehicle Speed Control problem

Failure Date: 06/18/2025

Malfunction: road mitigation system failed (rdm), lane keeping assist system (lkas) failed, and cruse control failed, after investigating the issue this is happening with multiple vehicles. Safety: yes, these all failed at the same time, poses significant safety issues for the diver, passengers, and other drivers due to nature of failure. Conformation: at this time no inspection of the vehicle has transpired. No other waning lamps or messages, prior to suddenly showing up today 6/18/25.

5 Vehicle Speed Control problem

Failure Date: 10/05/2024

Hello, so far 4 to 5 times my Mdx automatically shifted to neutral gear at traffic signals. Then vehicle stops and not moves, I wouldn't be able to change the gear, the vehicle just seems stuck. Couple of times the cars behind almost crashed with my family in the car. Only options is to power off the car and restart. I took to the dealer, they ran all the tests and nothing found in the debugging. Looking online, looks like many customers have experienced the problem with Acura vehicles [xxx] ). This is a huge safety concern as I feel we are sitting ducks for any fast moving vehicle. Can you please get Honda/Acura to rectify this problem for existing cars and not to play with customer lives information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

6 Vehicle Speed Control problem

Failure Date: 06/24/2024

Upon turning right, the car lost power, degraded acceleration as if someone is holding and pulling the car to move forward. The traffic behind me expected me to cathup with the speed on the road but due to loss of power and engine hesitation I got honked and was luck to avoid a crash from behind on a busy road. Acura dealership in dallas dont have parts since a very long time. They have pleant of new cars to sell but not repair.

7 Vehicle Speed Control problem

Failure Date: 06/01/2024

I stopped at a stop sign and the car went into n without me changing anything. The car wouldnt go back to d or p mode even when I pressed the buttons. I had to turn off the car and turn it on again to make it function properlty. This happened twice within 5 mins.

8 Vehicle Speed Control problem

Failure Date: 01/01/2024

I've experienced stop and stall issues with my vehicle three times and the Acura dealership said they couldn't locate but kept my vehicle for a few days and said it was the battery. I have a new battery but same issue occurred two more times. There is definitely an electrical problem with this vehicle's system. The radio randomly stops working, no sound or buttons stop at any given time and also heat/air buttons switch by themselves. Shift paddles sometimes does not slow down vehicle, in most cases it accelerates.

9 Vehicle Speed Control problem

Failure Date: 08/19/2023

When putting the vehicle in "drive" it unexpectantly rapidly accelerated causing me to aggressively brake the vehicle. It's happened twice and could easily have crashed into surrounding property or pedestrians. I brought the vehicle to the dealership but considering it is an intermittent problem they couldn't duplicate the situation. Acura said they have no record of anything like this happening. There were no electronic lights or indicators that warned me of a malfunction. The first occurrence was several months ago, and the latest occurrence happened two days ago.

10 Vehicle Speed Control problem

Failure Date: 04/25/2023

While braking into a parking spot, vehicle experienced sudden unintended acceleration. Brake did not engage, car rapidly surged forward over parking block, sidewalk and hitting building. Previously in day, car would not recognized key fob, would not unlock and would not start even though stepping on brake that would not depress. I had no control over vehicle,and this could have hit pedestrians on sidewalk or storefront. Thankfully no one hurt, and did not occur in traffic or on the road. The dealership was contacted immediately, and they declined to inspect vehicle, codes or edr statign that's not what they do. I have asked dealership 3 times. Insurance contacted immediately, and they to will not investigate, saying up to Honda and dealership. Honda stating they don't do investigations, and insurance should do that. Round and round we go. No one assisting. Auto body referred by dealership unable to investigate and do not have equipment to do so and stating dealership and Honda tech needs to do this investigation. Several messages displayed the day of incident prior to incident and electrical issues seem to have started immediately after recall or warranty work to reprogram auto stop function. First instance of electrical issue was on 4/1, when car would not open, or unlock even with new battery in key fob. This continued over next 3 weeks sporadically. 4/24 car would not start, displaying "must press down brake" to start, but brake would not depress. Finally worked. Same thing 4/25 in morning. In evening car would not unlock for some time, finally opened, then would not start displaying "key fob not detected". Finally started. Message remained displayed. 15 min ,after, when parking, car accelerated forward without warning. This is a short summary, and a detailed summary is available. Vehicle remains untouched at autonomy hoping to get investigation completed. Too scared to drive this vehicle now. .

11 Vehicle Speed Control problem

Failure Date: 09/26/2022

Problem started 1 month ago. As I approached the round about I am at very slow speed,and for no action on my part, my Mdx accelerates! fortunately it has only happened as my vehicle is coasting or I am applying the break slowly. This is happening more and more. It has over 20k miles on it.

12 Vehicle Speed Control problem

Failure Date: 04/29/2022

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.


Other Vehicle Speed Control related problems of the 2020 Acura MDX

Vehicle Speed Control problems
12
Cruise Control problems
1

MDX Service Bulletins
MDX Safety Recalls
MDX Defect Investigations