2019 Acura MDX engine problems

Related recalls

• Recall 23V751000Nov 13, 2023248,999 vehicles
  ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL

  Honda (American Honda Motor Co.) is recalling certain 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2016 and 2018-2019 Pilot, 2017 and 2019 Ridgeline, and 2018-2019 Odyssey vehicles. Due to a manufacturing error, the connecting rod bearing in the engine may wear and seize, damaging the engine.

  Risk: A damaged engine may run improperly or stall while driving, increasing the risk of a fire, crash, or injury.

  Remedy: Dealers will inspect and repair, or replace the engine as necessary, free of charge. Owner letters were mailed March 28, 2024. 2016-2017 Acura MDX owner letters were mailed November 1, 2024. 2016-2020 Acura MDX owner letters are expected to be mailed in mid-December 2024. Honda began mailing owner notification letters as of March 18, 2024. 2015-2016 Acura owner letters are expected to be mailed mid-December 2024, 2018 Acura TLX owner letters are expected to be mailed the end of March/early April 2024, 2019 Acura TLX owner letters are expected to be mailed mid-May 2024, 2020 Acura TLX owner letters are expected to be mailed mid-June 2024, and 2016-2020 Acura MDX owner letters are expected to be mailed January 27, 2025. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for these recalls are XG1 and GG0.

• Recall 19V298000Apr 12, 201993,946 vehicles
  ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS

  Honda (American Honda Motor Co.) is recalling certain 2018-2019 Acura MDX and Honda Pilot vehicles and 2019 Acura RLX, RLX Sport Hybrid, TLX and Honda Odyssey and Ridgeline vehicles. The timing belt teeth may separate from the belt.

  Risk: Teeth separation from the timing belt may result in an engine stall, increasing the risk of crash.

  Remedy: Honda will notify owners, and dealers will inspect the vehicle and replace any affected timing belt free of charge. Vehicles receiving a replacement timing belt will also have the engine inspected and any damaged components will be replaced for free. The recall began June 7, 2019. Honda owners may contact customer service at 1-888-234-2138. Honda's number for this recall is L4M. Acura owners may contact customer service at 1-888-234-2138. Acura's number for this recall is Z4L.

What owners say

1. Filed Oct 7, 2026NCEngine

   Dec. 16, 2025, took Acura into the dealership because Check Engine light kept coming on. They did a full inspection and said I needed to have the purge valve replaced and that it was nearing time to have other services: transmission service, front transfer case, rear differential, brake fluid, timing belt, spark plugs, fuel service. Took the diagnostic to my brother who is a mechanic and he started the work starting with the purge valve. He had already done spark plugs with…

   NHTSA complaint #11769561 · source
2. Filed Sep 17, 2026PAEngineFuel, Hybrid & EV Propulsion

   issue occurring with automatic start/stop function. car stalls on occasion trying to restart, goes into neutral, even though battery is new and in good condition. hard to replicate and occurs randomly. car has to be turned off and on again. this is the 4th time this has happened over the course of 3 years. seems to be happening to others based on forums as well.

   NHTSA complaint #11764975 · source
3. Filed May 6, 2026GAEngineFuel, Hybrid & EV Propulsion

   I am reporting a recurring safety issue following the Acura rod bearing recall repair on my 2019 Acura MDX SH-AWD. The original recall resulted in catastrophic engine failure and Acura replaced the long block assembly. Since that repair, the vehicle has repeatedly failed and returned to the dealership multiple times for the same issue pattern. Symptoms include: * “Emissions System Problem” warning * SH-AWD, brake, and traction control warnings * strong raw gasoline odor *…

   NHTSA complaint #11736180 · source
4. Filed Apr 2, 2026OHElectrical SystemEngine

   My car has stalled while driving on the highway multiple times now. The first time it happened, it lost power, stopped accelerating, and cycled through multiple warning lights, causing a significant safety risk. I pulled over and it restarted within minutes. I took it to a repair shop and they could not find a problem with it, even with the codes provided. Nothing pointed to a solution. It happened two other times while I was driving my child on a highway where it lost…

   NHTSA complaint #11728714 · source
5. Filed Feb 7, 2026GAEngineTransmission & Drivetrain

   While driving at highway speed, the vehicle suddenly lost the ability to accelerate. Immediately prior to this, the vehicle was making an abnormal engine noise, which continued until the failure. "Drive" light turned off and the "Neutral" turned on its own. I tried to get it to shift back to "Drive" and it wouldn't. I pulled off to the side of the highway. The engine stalled and the vehicle would not restart. The vehicle was towed from the highway and we were told to have it…

   NHTSA complaint #11716363 · source
6. Filed Jan 9, 2026NEEngine

   I was merging onto the interstate from another interstate when my car suddenly became limp and would not accelerate. I had zero warning there was anything wrong with my car, only 67,150 miles. I had to coast to the side of the road and it wasn't driveable. I was forced to have it towed to Acura to find out it's a rocker arm oil pressure switch that apparently goes out after 60,000-100,000 miles. Without warning, this is a huge safety issue. There should be a backup switch…

   NHTSA complaint #11709835 · source
7. Filed Dec 2, 2025MDElectrical SystemEngine

   Since the purchase of my Acura MDX 2019, the following problems have been reported to the dealership and to Honda Manufacturing Inc. without any resolution. The dealer shop has replaced recall parts, but the problems persist and have not gone away. The vehicle stalls and stops working while driving. The engine makes knocking/rattling noises upon becoming disabled while driving.The engine would randomly not start when turning it on. When car becomes disabled the dashboard…

   NHTSA complaint #11702598 · source
8. Filed Oct 28, 2025GAEngine

   My car has failed to restart while sitting at red lights. The engine complete shut down. This has happened twice now since I have owned the vehicle. The first occurrence was around March 2024 and the most recent occurrence was 09/2025. Very dangerous situation both times and I had my child in the car.

   NHTSA complaint #11696202 · source
9. Filed Oct 21, 20251,000 miTXEngine

   The contact owns a 2019 Acura MDX. The contact stated that while at a stoplight with the Auto START/STOP feature activated, the vehicle failed to restart after releasing the brake pedal. The contact stated that the vehicle was able to be restarted approximately 5 minutes later. The failure had occurred on several occasions. The local dealer was notified of the failure, but the cause of the failure was not yet determined. The manufacturer was not notified of the failure. The…

   NHTSA complaint #11694677 · source
10. Filed Aug 25, 2025NVEngineTransmission & Drivetrain

    My 2019 Acura MDX which was owned for less than two years, broke down due to a transmission failure. The vehicle had an open recall (one of many recent) delayed by Acura for months, which research shows can cause engine and transmission damage. Acura of Reno denied the recall link and misattributed the failure to “incorrect fluid,” despite admitting the fluid was correct to myself and other businesses. I believe this breakdown was directly related to the open recall and…

    NHTSA complaint #11682975 · source
11. Filed Jul 7, 2025OKElectrical SystemEngineOther / Unknown

    Vehicle is getting errors for Emssions controls, parking brake, and sh-awd system faults all at the same time. Car will still function normally and codes will go off and come back intermittently. Also while reading the codes it will get a U3006-16 code for low voltage on the ecm. Confirmed battery is good under load test and alternator is charging at 14.2 volts.

    NHTSA complaint #11671500 · source
12. Filed Feb 7, 2025MIElectrical SystemEngineTransmission & Drivetrain

    My 2019 Acura MDX with 100K miles stalled on the road with several alerts on the dashboard and went into Parking mode with no further movement. Had several alerts stating Transmission failure, Blind Spot monitoring failure, Auto break system failure and vehicle stalled on the road. Had similar issues previously where the steering jammed and vehicle was stalled on the signal, took it to Acura dealer and they had to fix some circuit / reset the circuit board. Was ok for few…

    NHTSA complaint #11641342 · source

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology