Table 1 shows one common other fuel system related problems of the 2020 Acura MDX.
| Problem Category | Number of Problems |
|---|---|
| Other Fuel System problems |
While driving my 2020 Acura Mdx a-spec at approximately 63,744 miles, the vehicle suddenly lost all engine power without warning while passing through a busy multi-lane intersection. The loss of propulsion prevented acceleration and forced us to coast across traffic lanes to reach the shoulder, creating a significant safety hazard. The engine would not restart. The vehicle was inspected on 3/17/2026 by lyle pearson Acura (boise, id). The dealership diagnosed catastrophic internal engine failure with the following findings: spun rod bearing in cylinder #6, excessive metal debris in the oil pan, and bearing seizure to the crankshaft. The technician stated the failure pattern is consistent with the rod-bearing defect described in Acura safety recall / service bulletin 24-001. Although my VIN is not currently included in the recall population, the confirmed failure mode matches the known defect. This suggests the issue may extend beyond currently identified vehicles that are included in Acura service bulletin 24-001 and NHTSA recall 23v-751. The vehicle has a salvage title from prior cosmetic damage only; no engine, drivetrain, or structural components were affected. The vehicle has been properly maintained with documented service history. This failure represents a serious safety risk due to sudden loss of power in active traffic conditions, increasing the risk of collision or injury. I request NHTSA review this incident to determine whether additional vehicles should be included in the recall and to assess the broader safety risk.
Auto idle cuts off idling at stop light but when reengaged stalls the car completely. Must totally restart car before continuing causing back up in intersection and almost being hit. Happened several times, when I forget to turn auto idle off. New battery did not help.
When the vehicle stops and the idle auto-start/ stop engages, the vehicle will automatically go into neutral and cannot be restarted until the vehicle is turned off then back on. This has happened at both stop lights and on the highway and almost caused a very serious rear end accident.
On Aug 8th at 3:32pm (81f and sunny), I stopped at a red light with the auto idle engine feature on. When I lifted my foot off the brake to drive the car, the car shifted into neutral and completely shut down and would not restart immediately. I attempted approximately 8 times to restart the car for 3 minutes before it successfully restarted. This poses a significant safety hazard for myself, my children, and others on the road. This is the 6th time this has happened and I have previously filed a NHTSA report # 11533671 with the same issue. Acura has been unable to diagnose and recreate the problem and is refusing to do any further work. It has been brought into their dealership on 3 separate occasions (July 2023, September 2024, August 2025). Prior to this occurring, there were no warning symbols, the car started fine without issue, and the battery has been checked and confirmed in working order.
I am writing to formally express my concern regarding a recurring issue with the auto start/stop feature in my 2020 Acura Mdx. This feature, which is intended to improve fuel efficiency, has instead caused unexpected and unsafe engine shutoffs while the vehicle is in operation. On multiple occasions, the vehicle has failed to restart promptly after the engine shuts off at a stoplight or in traffic, creating a serious safety hazard. The delay or failure to restart can leave the car temporarily disabled in active traffic, placing both myself and other drivers at risk.
My car has been going into neutral when in the autostop. The only way to get out of it is to turn it off and back on. It's incredibly dangerous. I almost got into a horrible accident. It happens suddenly and without warning.
There is a recall on my 2020 Acura Mdx and I have been going to the local Acura dealer to get the part for the last 6 months and every time I go they tell me they are still waiting for the part. Periodically, the vehicle lurches while I am driving causing a major back and forth tugging and jerking. This is very unsafe. I am demanding that Acura prioritizes my need to get this fixed. I do not know if the jerking of the vehicle is due to the recall, but regardless, Acura needs to do the right thing and send the part to the Acura dealership so I can get this fixed. No Acura dealer in my area says they have the part. I am on a "waiting list. " my car last did this jerking motion on 12.
Auto idle mode - after we've stopped and released the brake to go forward, the car will then shift to neutral by itself instead of restarting to drive. This has happened frequently and is now starting to happen more often. This is a safety issue, especially if you're the last car in line and other cars are traveling 55-60 miles behind you on a major road and see a green light ahead. Each time this happens, we have to turn off the car and try to restart the car, and sometimes this has been iffy and we've had to repeat the process a couple of times. There were no warning lights of problems with any of car components. . Read more...
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.
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.
Nhtsa recall number 23v-858. Honda/Acura still have not fix my car supposedly due to they are short on the fuel pump part.
While driving on the highway, at highway speeds, all dash lights came on and the vehicle immediately lost power coming to an abrupt stop. We were able to limp the car to the side of the road. It was ultimately determined that the car’s fuel pump had gone out. The fuel pump was replaced by Acura, and covered under the initial manufactures warranty. However, it’s rather suspicious that our car is not included in the recall given that the fuel pump failure is identical to the open recall for our same make and model.
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.
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.
Periodically when accelerating the car (2020 Acura Mdx) looses power. The car does not stall it just looses power. There have been times when we have had to pull over to avoid causing an accident. When it does occur there are no warning or signal displayed on the dash boards pre or post the incident. We have reported the issue to Acura but there has be no resolution to the issue.
Temporarily loss control of my vehicle when I was exiting the parkway and needed to steer around to avoid a stop car my car just took a big rock in motion from side to side. The steering is very unresponsive, vehicle hesitates when accelerating rapidly and when turning they is no stability. Also my breaking doesn't react the way it should it's very delayed. All of the things that the dynamic mode is supposed to enhance appears not to be functioning. I went to the dealer several times they said they couldn't find anything but yet the problem continues. They also said they reset and relearned some parts of the car in an attempt to rectify the issue I was experiencing. The problem still exists. Many times when I come to a stop on a hill the car roll backwards. I was given the same model on one of my visits to the dealership as a loaner. And it ran like a totally different car the way the car should run it was the same year same model. Everything was more responsive the steering the breaking the suspension even when I started the car the start up sound was much more aggressive. Please help!.
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.
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.
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