2025 Honda Odyssey: engine stalls while driving

Filed Nov 5, 2026 · Engine · CA

The 2025 Honda Odyssey I purchased has issues where the car will not start after the "Automatic Start/Stop" feature turns on. What that looks like is when I stopped on the freeway in rush hour traffic, or at a long traffic signal (usually with many, many people behind me on a busy road), my car will stall and not turn on. I have to wait, sometimes minutes, for my car to restart. This is a safety issue because it will stall / I will have to restart at very inappropriate times, like in rush hour traffic on the freeway. It has happened multiple times. No warning lights or messages came on, other than when the car had officially stalled. By that point, there is nothing I can do besides wait for a minute or so and restart car.

Filed Nov 3, 2026 · Engine · IN

I purchased a 2025 Odyssey at the end of August and it is failing to restart and that the local dealer is delaying the process due to "system outages”. The idle stop process is causing my car to stall at stoplights and I must sit there and wait to turn it off and back on again to be able to drive causing traffic backups and a safety hazard to myself. I had it looked at, at the dealership and was told that all starters and relays are on back order and the day I had it there, the diagnostic computer system wasn’t working so it was never hooked up and diagnosed with this problem. I had my 2025 Odyssey at the dealership on October 31st, 2026.

Filed Nov 3, 2026 · Electrical, Engine · NJ

When the auto idle system is forgotten to be not turned off the van will stall. We have had scary incidents where we have stalled at lights and have to restart the van one or more times to get it to drive. There is also problems with the van starting up in the first place. Sometimes when trying to turn on the van it takes a time or two to get it to turn on.

Filed Oct 28, 2026 · Electrical · IN

The Auto Idle feature has caused my car to stall multiple times. This is extremely dangerous because it always happens when I am in populated areas- sometimes at red lights and another time in stop/go highway traffic. My car is 1.5 years old and this keeps happening more and more frequently. I am very concerned that one of these times I am going to be rear ended because traffic starts to go, I let off the brake to drive and then my car stalls. I then have to turn my vehicle off completely and then back on to get it to not have issues. I do get a warning saying to depress the break and press the start button. Sometimes I get a red battery light on the dash.

Filed Oct 27, 2026 · Transmission · NY

The vehicle is experiencing an intermittent but highly dangerous defect involving the factory-installed Auto Idle Stop system. When the vehicle comes to a complete stop at intersections, traffic lights, or in stop-and-go traffic, the Auto Idle Stop system engages as designed and shuts off the engine. However, upon releasing the brake pedal to accelerate, the engine fails to restart automatically. Instead of seamlessly restarting, the vehicle completely stalls in live traffic. The dashboard instruments remain on, but the engine drops completely out of operational mode. To recover propulsion, the driver must shift the vehicle entirely into Park, press the start/stop button to cycle the ignition completely off, and then manually restart the engine. This creates an immediate and severe safety hazard. The sudden, unprompted loss of propulsion leaves the vehicle completely stranded in active intersections and roadway lanes, exposing the occupants to an imminent risk of a rear-end collision. The restart delay forces the driver to perform multiple steps to reset the vehicle while traffic builds around them. The manufacturer is aware of similar systemic restart failures across its V6 engine platforms, which are currently the subject of active the federal safety agency investigations and class-action litigation. However, this issue continues to persist on the newest model years, creating an active road safety risk.

Filed Oct 26, 2026 · Electrical, Engine · VA

The Auto Idle Stop (AIS) on our 2025 Honda Odyssey will cause the van to stall and the engine will not restart. When this happens, our only option is to put the van in park, shut it down and then restart. Sometimes that van has not restarted for almost 90 seconds. We have had it into the Honda dealership three separate times for this issue. The first time they told us the battery was drained so they recharged for over eight hours. The last time they said "the battery fails the load test at this time" so they replaced the battery and stated that the vehicle was "operating as designed at this time." Since the last time we had it in for service (and with a brand new battery), the AIS has failed on us twice. The last time (XXX) it nearly caused an accident on a busy road in Northern Virginia. When it fails to restart the van goes into a default type mode (where most of the service lights turn on or flash and we will have to put the hazard lights on, put the van in park, shut it off and then restart the van. This issue has happened to us about 12 times int he last 8 months. I am very concerned that this will cause an accident at some point and is putting my family's safety at risk. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 26, 2026 · Electrical, Engine · UT

We have been experiencing issues with the car stalling while driving. Most recently, the car lost power a few feet into making an unprotected left turn leaving us stranded in the middle of an intersection in a vulnerable position for several minutes. This was deeply unsettling to have happen while making left turn maneuver. It seems to be a failure of the Auto Start/Stop function. After a few persistent trips to the dealer, they have now informed us that this is a known issue, but the parts are on backorder until January 2027. The workaround is turning off the Auto Start/Stop function, but this button does not have an indicator light, is not always confirmed on-screen, and is re-enabled by default EVERY time the car is started. It also appears that others have complained about this issue, and this deserves to be upgraded to a recall. It is unacceptable that a manufacturer would know about an issue with serious safety implications and not notice owners. This could have easily caused a crash and it is happening to others. This specific van is used to transport a disabled family member and outside aides often drive him in this car. We do not feel comfortable with a non-persistent workaround while others are driving this car while we wait for this part. - Auto Start/Stop and Drivetrain, available for inspection - Car stalls during maneuvers after stopping - Problem was reproduced multiple times. Dealer is aware. - Inspected by dealer. - No warnings, messages, or symptoms.

Filed Oct 25, 2026 · Electrical, Engine · AL

Auto Idle start stop system failed to start vehicle while. We were stopped at a red light auto idle shut down the engine once the light turn green and we attempted to move forward the auto start failed to cycle resulting in a stalled vehicle on the road, potentially increasing risk to passengers and other drivers on the road. This has happened multiple times.

Filed Oct 19, 2026 · Electrical, Engine · FL

The auto start-stop system fails frequently. If I do not turn off the system, when I stop on red light, the engine turns off as expected. However, it frequently fails to start. The car stalls and it's difficult to turn back on. I need to turn the car off completely first, then try to turn it back on. This usually takes 10-20 seconds. The situation presents a safely hazard as I'm not able to continue to drive through an intersection on a green light. I took the car to dealer 3 times. They were not able to reproduce he issue nor find the cause of the problem

Filed Oct 15, 2026 · Electrical · CO

At a stop light, car threw a large BRAKE warning and stalled when the foot was taken off the brake. The car then had to put in park and turned off and on again. Having a car die in the middle of traffic, even when at a stop light, is not safe. We took the car to the dealership, where they informed us the starter needed replacement. Prior to this the car has been jerky when coming out of that idle stop feature, but hasn't stalled. The BRAKE warning did flash on the screen earlier that day but the car didn't stall.

Filed Oct 15, 2026 · FL

The auto stop start system semi regularly stalls in the middle of traffic, shutting the van down. This requires a quick power off and restart that doesn't always succeed on the first attempt. This creates a risk of an accident, especially during busy traffic times. The dealer just told us that if it will start up eventually then the starter isn't bad, so there's nothing they can do. This is a known issue amongst Odyssey owners. The vehicle has only been inspected by the dealership. They don't acknowledge the problem, which is why I'm reporting it here. This is a common issue and nobody is doing anything about it. No warning signs. This has been occurring for several months, intermittently.

Filed Oct 11, 2026 · Electrical, Engine · TX

Vehicle: 2025 Honda Odyssey Component: Electrical System / Engine / Powertrain (Auto Idle-Stop System) Description of Incident: While driving my 2025 Honda Odyssey, the vehicle experienced a dangerous failure of the Auto Idle-Stop feature. Upon coming to a complete stop at a traffic intersection, the system engaged normally and shut off the engine to conserve fuel. However, when traffic moved and I released the brake pedal to accelerate, the vehicle failed to restart. The engine stalled completely, the vehicle remained entirely immobilized in the middle of active traffic, and the engine could not be restarted automatically by the vehicle's computer systems. To get the vehicle moving again, I had to manually shift the transmission into Park (P) and repeatedly cycle the ignition via the Engine Start/Stop button. This delay left my family and me dangerously exposed to oncoming traffic and vulnerable to a rear-end collision. Diagnostic and Repair History: The vehicle is well within its 3-year factory warranty period. I took the vehicle to an authorized Honda dealership to address this specific defect. The dealership technicians diagnosed a voltage issue and replaced the 12V battery, claiming this would resolve the problem. However, the exact same failure occurred again shortly after leaving the dealership. The battery replacement did not fix the root cause. Safety Concern: Local dealership technicians do not currently possess a viable or permanent corporate fix from Honda for this issue. This creates a severe and unpredictable safety hazard where the vehicle can randomly stall and immobilize itself at busy intersections, highway off-ramps, or left-turn lanes. Honda must issue an immediate safety alert and an official recall to replace the defective starter motor components or update the Engine Control Module (ECM) software before an injury or fatal accident occurs.