What 69 owners told NHTSA about the 2025 Acura MDX Sport Hybrid

Randomly when auto/start stop feature engages and shuts down the engine when I let go off the brake the engine doesn't restart and a system problem message show up on the dash. Have to shut down the car and restart for the engine to start running again.

NHTSA ODI 11745473

My Vehicle is having an issue with the idle stop feature. Multiple times when stopped at a red light or when idle the car stops and will not turn back on. I have to turn the car off completely open the door to simulate leaving the car, wait a minute then start the car again to be able to move.

NHTSA ODI 11739504

Car engine turns off at a red light, by turn off I mean completely turned off, not just silent. And takes a couple of attempts to restart the car before the engine turns on again. This has happened over 5 or 6 times over the last 3 months, however yesterday (May 9, 2026) it happened twice within the hour. Luckily, I have not been involved in an accident because of this, but I'm concerned that it's easy to imagine a scenario where someone will be rear-ended. Please issue a safety recall for Acura to fix this issue.

NHTSA ODI 11736850

While stopped at a traffic light, the vehicle had auto shut off normally. However when I released the brake and pushed the gas it unexpectedly stalled and shut off without warning. When attempting to restart the vehicle, it would not start again. There were no prior warning indicators or messages suggesting an imminent issue. This created a hazardous situation as the vehicle was disabled in an active traffic lane. After several attempts, the vehicle either restarted after having set the emergency brake. The failure appears to be sudden and without driver input, raising concerns about reliability and safety in traffic conditions.

NHTSA ODI 11735584

We have had multiple incidents when the car is at a stop light with the idle stop not active, the vehicle engine will just die. The light turns green and the vehicle is not running, it will take multiple times pushing the start button for it to start back up. This has resulted in multiple almost rear end incidents due to other drivers assuming we would go when light turned green. More recently this weekend on a trip from Columbus OH to St. Louis MO; stopped to get gas east of Indianapolis, after pumping gas the vehicle would not restart. It took multiple tries to get it to restart; this happened again the following day at a stop during the day at a shopping center, we ran in to get subs for lunch, came back out, would not start, I have a video of the sound and flashing lights but I can't upload a video here.

NHTSA ODI 11732431

The contact owns a 2025 Acura MDX. The contact stated that while driving approximately 30 MPH, the vehicle bucked for approximately 3-seconds before the vehicle stalled. The hazards were activated, the vehicle was turned off, and the contact waited before restarting the vehicle. While restarting the vehicle, several warning lights quickly flashed, and the vehicle failed to exceed 4 MPH while driving to the nearest parking lot. The vehicle was towed to the dealer, but was not diagnosed. The vehicle was not repaired. The contact became aware of NHTSA Campaign Number: 25V031000 (Fuel System, Gasoline, Electrical System); however, the VIN was not included. The manufacturer was not made aware of the failure. The failure mileage was approximately 24,000. The VIN was not available.

NHTSA ODI 11726899

Car stalls at idle. Auto Idle does not allow engine to restart from stop. Creating dangerous situations when on highway traffic, traveling around town and more. 2025 MDX, 21,000 Miles Nov 2025 at 14,500 miles reported issue after experiencing intermittently for a few months. Filters replaced, software updated Dec 2025 issue still occurring battery replaced March 2026 issue still occurring starter being replaced Technician at dealership did not seem confident that replacing the starter will remedy this issue.

NHTSA ODI 11724995

When the car comes to a stop, the engine will shut down after idling. This is by design. The problem is that the engine shuts off and does not start up again. This is very dangers when turning across traffic. I took the car in for maintenance and they said this is a known issue but there is no fix. The internet has many complaints and some people are having their starters replaced. This problem has occurred in other model years of this car. Please issue a recall and make Acura accountable for this known issue.

NHTSA ODI 11701103

The contact owns a 2025 Acura MDX. The contact stated that while depressing the accelerator pedal, the vehicle failed to respond as intended, causing the vehicle to decelerate unintendedly. Several unknown warning lights were illuminated. An independent mechanic was contacted. The vehicle was taken to an independent mechanic where it was diagnosed, and determined that the throttle body was damaged and needed to be replaced. The vehicle was not repaired. The manufacturer was notified on the failure and suggested that the vehicle be taken to the dealer for assistance. The approximate failure mileage was 6,000.

NHTSA ODI 11690511

Idle stop causing engine to shut down. This has happened three times! It’s very dangerous.

NHTSA ODI 11683513