Table 1 shows one common power train related problems of the 2025 Honda Odyssey.
| Problem Category | Number of Problems |
|---|---|
| Power Train problems |
Vehicle has stopped running multiple times while at stop signs or traffic lights when engine is at idle and not running. The vehicle has to be restarted to go after shutting off while in traffic. It is very concerning when this happens in live traffic. The dealer has had the vehicle for days and were not able to replicate what happened. Asked me for more information on what was being used when it happened. They say they ran tests and were unable to get any codes to show what might have happened. The only thing I have seen was reports that the idle stop feature was unavailable previously. Not sure when that happened? this has happened at least 6 different times, last time being may 8th 2026.
The auto-idle off feature - yes the stall happened in a situation where cars behind me would have expected me to start moving and could have resulted in a rear-end collision. The vehicle has stalled like this three times. The other two times were not in public or traffic situations. It has not been reproduced or confirmed by a dealer or service center. It has not been inspected by anyone else. There were no warning lamps or messages prior to the failure, only after.
The vehicle's auto idle stop system is malfunctioning, resulting in the engine failing to restart from a complete stop. This total failure has occurred on five separate occasions, including while stopped in active traffic intersections. Prior to these total restart failures, the vehicle showed the following symptoms: 1) initially, the vehicle experienced rough engine idling, abnormal vibrations, and a raw gasoline odor after driving. 2) this progressed to a noticeable delay between releasing the brake pedal and the engine attempting to ignite, during which the starter sometimes sounded strained. 3) this has culminated in the current defect where the engine shuts off normally when stopped at an intersection, but completely fails to immediately restart when the brake is released. This defect completely immobilizes the vehicle in active traffic lanes, exposing us to an immediate and severe risk of a rear-end collision. When the engine fails to restart, the vehicle locks the transmission out of drive and triggers a warning on the dashboard. It is a highly hazardous situation, especially with a lot of distracted drivers on the roadways.
The contact owns a 2025 Honda Odyssey. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The failure had occurred while driving from a stoplight, while the auto idle system was enabled. There was no warning light illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The dealer was made aware of the failure. The contact was advised that a diagnostic test was needed to determine the cause of the failure. The failure had occurred three times; however, the failure had not reoccurred after turning off the vehicle. The dealer informed the contact that the failure might not be duplicated. The manufacturer was not made aware of the failure. The failure mileage was approximately 12,549.
1. The usb port not working in the center console 2. Battery was draining and it was struggling to start, died at lights and barely turned back on 3. Door sensor on passenger side kept saying it was open when it wasnt 4. Air barely working 5. Wind sound whipping through the driver side 6. Raining in to the vehicle on the passenger side 7. Screen barely works, sometimes it takes forever to turn on sometimes it just wont switch or load or it just stays on a black screen 8. After taking it for the who knows how many times for the popping sound they deemed the steering column unsafe to drive and replaced that and they had the vehicle for almost a month because they couldn't get the parts, in that time they even admitted they felt the transmission issues 9. Starter was replaced after complaining for months about it dying at lights or stops and it being rough to start 10. Popping sound from the axle when you go over anything or turn the wheel 11. Back passenger door wont shut it just keeps popping back open 12. Doors dont lock when you walk away 13. Passenger doors will unlock but driver side doesn't 14. The passenger door got stuck and we had to crawl through and push it open 15. Transmission gets stuck and wont go over 30 and the rpms go up but the speed doesn't move, it shifts hard and makes a thud sound, and the engine is crazy loud 16. Has a crazy vibration coming from it 17. Will brake on its own with nothing around it 18. Was switching to sport mode on its own in the middle of driving 19. The new steering column was getting stuck and acting up and it was trying to merge in to the other lane but lane assist off 0. We had an exhaust leak 21. Pieces of trim with vents broken inside 22. Pieces of trim falling off 23. Weather stripping for the passenger back door just fell off, still waiting on them to replace that 24. The fan is extremely loud 25. When putting in to park, or drive you have to really hit the buttons because they aren't switching easy.
Dear NHTSA, I am submitting a safety complaint regarding my 2025 Honda Odyssey, which has been diagnosed with a transmission failure requiring full replacement due to faulty internal seals. The vehicle is less than one year old, and this type of premature failure raises serious safety concerns. I first became aware that something might be wrong during a routine oil change on November 11, when technicians noticed signs that the transmission might be leaking or malfunctioning. I continued to monitor the vehicle, and on November 28, I was informed that the entire transmission must be replaced due to faulty seals inside the transmission assembly. A critical component like the transmission should not fail this early in the life of the vehicle, and a structural defect such as faulty seals may indicate a manufacturing issue that could affect other vehicles of the same model and year. Information from the dealership: sheehy Honda of alexandria diagnosed transmission failure caused by faulty seals recommended repair: complete transmission replacement explanation: premature failure of internal transmission seals leading to fluid loss and unsafe operation repairs completed so far: diagnostic inspections confirming failure this vehicle is used to transport children, and a sudden transmission failure presents a significant safety risk. For a new vehicle to require a full transmission replacement within its first year of use is highly concerning. I am requesting that NHTSA review this issue to determine whether other 2025 Honda Odyssey vehicles may also be experiencing similar premature transmission failures. Thank you for your attention to this matter. I can provide repair documentation, inspection notes, photos, or any additional information upon request. Sincerely, allison epps 334-464-0233 alijepps@gmail. Com vehicle: 2025 Honda Odyssey.
I came to a stop at a stop sign. Then "auto off" shut off the engine. Next, the vehicle went into park. A message came on screen telling me to press the brake and the start button. Doing so had no effect. Cars behind me started honking. After repeatedly stabbing the start button and opening and closing my driver's door, the vehicle eventually rebooted, and the engine started as normal. This caused a dangerous situation where other cars went into opposing traffic to get around me.
The idle stop system is malfunctioning. I had it inspected once previously and now trying to get it inspected again for the same occurring issue. The dealership continues to tell me to turn off the idle stop feature on the vehicle. My safety was put at risk because of the vehicle stalling and not kicking back on while being stopped at a redlight on a busy 4 lane highway multiple times now. The first time, I was by myself. The second time, my 8-month-old was in the vehicle with me. This causes a lot of panic as there are impatient drivers around me since I am unable to move my vehicle. I fear that this could happen on a freeway if there was construction, an accident or even while trying to turn in an intersection and getting hit because I can’t move my vehicle and often have my two small children with me. The first time the idle stop stalled, it occurred twice in a week. The first time was rather quick, and the engine kicked over quickly so I did not think anything more of it. The second time which happened a few days later (9/17/25), took about 5 minutes to get the engine going again and moving on the road (4 lane highway). I took it back to my local Honda dealership where they performed a diagnostic test and discovered the battery had dipped down to 7. 22v when trying to restart, the battery failed the battery test and ended up being replaced with a new battery. The idle stop issue has now happened for a third time (10/21/25), with the same issues occurring and I am waiting to be able to get back into Honda. The vehicle has only been looked at by my local Honda dealership. There were no warning lamps, messages, or other notifications prior to the failure. I received a warning on the dashboard after the events occurred on how to start the vehicle. This is very disappointing as a new Honda owner. My husband and I decided on Honda over other car companies due to their reliability and this has now become a constant worry.
Vehicle shut off and put itself in park leaving a stop light. Was hard to restart.
On June 14th 2025, I reversed up my driveway, uphill, shifted to neutral to allow the vehicle to roll downhill a bit so I could straighten it out. While rolling forward, the transmission was jammed into park with no warning or interaction from me, causing my head to sling forwards in a whiplash fashion from the abrupt change in inertia. This was both harmful to me, to the transmission, and is a major defect. Engaging a transmission into park while moving is reckless, harmful and extremely dangerous. The failing component is most likely the transmission control unit and is available for inspection upon request, but has not been inspected by anyone other than myself. The problem is reproducible by me.
I have a 2025 Honda Odyssey, I bought mine with 2 miles on it, it was rhe first vehicle ive owned that was new so we had something safe and reliable and this has been far from it. So far we have had 1. The usb port not working in the center console 2. Battery was draining and it was struggling to start, died at lights and barely turned back on 3. Door sensor on passenger side kept saying it was open when it wasnt 4. Air barely working 5. Wind sound whipping through the driver side 6. Raining in to the vehicle on the passenger side 7. Screen barely works, sometimes it takes forever to turn on sometimes it just wont switch or load or it just stays on a black screen 8. After taking it for the who knows how many times for the popping sound they deemed the steering column unsafe to drive and replaced that and they had the vehicle for almost a month because they couldn't get the parts, in that time they even admitted they felt the transmission issues 9. Starter was replaced after complaining for months about it dying at lights or stops and it being rough to start 10. Popping sound from the axle when you go over anything or turn the wheel 11. Back passenger door wont shut it just keeps popping back open 12. Doors dont lock when you walk away 13. Passenger doors will unlock but driver side doesn't 14. The passenger door got stuck and we had to crawl through and push it open 15. Transmission gets stuck and wont go over 30 and the rpms go up but the speed doesn't move, it shifts hard and makes a thud sound, and the engine is crazy loud 16. Has a crazy vibration coming from it 17. Will brake on its own with nothing around it 18. Was switching to sport mode on its own in the middle of driving 19. The new steering column was getting stuck and acting up and it was trying to merge in to the other lane but lane assist off 20. We had an exhaust leak 21. Pieces of trim with vents broken inside 22. Pieces of trim falling off 23. Weather stripping for the.