2026 Honda Odyssey

2026 Honda Odyssey: Strong Exhaust/Fuel Odor in Cabin Causing Dizziness and Nausea I am submitting this complaint to report a potential safety issue involving a vehicle that is less than one year old. Beginning this past weekend, the vehicle suddenly began filling the passenger cabin with a strong exhaust-like odor during normal operation. The odor is severe enough that multiple occupants have experienced symptoms such as dizziness and nausea after spending approximately 10 minutes inside the vehicle. I visited my local Honda dealership to report the issue and seek assistance. According to the representatives I spoke with, Honda believes this is a known and widespread issue affecting multiple makes and models and that it is allegedly related to recent changes in gasoline formulation. I was further informed that Honda is aware of the issue, that engineering teams are working on a solution, and that there is currently no corrective action available to consumers. Honda also stated that, despite the odor, the condition does not involve toxic fumes and is only an odor concern. I am not ready to accept that explanation without further investigation. At this time: The condition began suddenly and without warning. The odor is strong and persistent. Occupants have experienced dizziness and nausea while riding in the vehicle. Honda has not identified a repair or mitigation. Honda has indicated that this may be a broader issue rather than an isolated vehicle defect. I am requesting that NHTSA review this matter to determine whether similar complaints have been reported and whether this condition warrants further investigation as a potential safety defect. I have also requested that Honda provide written documentation supporting its statements regarding: The alleged fuel-formulation cause of the issue. The assertion that occupants are not being exposed to harmful fumes. Any technical bulletins, engineering analyses, or communications related to this condition.

NHTSA ID

11754522

Incident

Aug 1, 2026

Gasoline fuel vapors enter the passenger cabin of my 2026 Honda Odyssey while driving. The problem began XXX, the day after a dealer oil change, and has recurred repeatedly, growing stronger each time. It is worst in high ambient heat (100 to 116 F), with the fuel tank above half full, and after extended idling or stop-and-go driving on a heat-soaked engine. It initially occurred only after idling but now also fills the cabin at cruising speed. No warning lights or messages precede it. On XXX in about 116 F heat, the cabin filled with gasoline vapor with my two children (ages [XXX] and [XXX]) aboard. Onset was immediate: nausea, lightheadedness, and sore throat. I had to shut off the A/C and open the windows in extreme heat to reduce exposure, and the children had to be taken home in a different vehicle. Poison control was contacted the same day, opened case files for all three of us, and assessed the symptoms as consistent with short-term gasoline vapor exposure. A pediatric follow-up is scheduled. The dealer has confirmed the problem. Repair Order XXX (Tempe Honda, XXX 14,032 miles) states the advisor and tech did confirm smell coming from vehicle, and that the issue is currently under investigation by AHM, with no work done. An earlier dealer inspection onXXX found nothing. American Honda has an open corporate case, and no repair path has been provided to date. In-cabin TVOC air readings of about 2.0 mg/m3, peaking at 6.0 mg/m3, were captured on video. The vehicle is available for inspection, and repair orders, videos, and manufacturer correspondence are available on request. The vehicle is no longer driven with children aboard. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11754409

Incident

Aug 1, 2026

Idle stop function error during waiting at red light. Engine failed to restart so i had to turned it off and restarted the engine at the traffic light. Happened twice already. Idle stop system is defective need to be recalled

NHTSA ID

11753569

Incident

Jul 25, 2026

When I stopped at a stoplight at a busy intersection during rush hour traffic my auto shut off engaged like it was supposed to. When I released my foot off the brake for the car to restart so I could drive the car's dash started flashing and displaying instructions to engage the brake and put the car into drive, except I was in drive. It would not restart and no matter how many times I pressed the brake and the drive button nothing changed and it kept flashing the same message at me. I attempted to the the car off and when I tried to restart it, it flashed the battery light and would not restart. All electrical systems would turn on, but the car would not restart. It took a solid 5 minutes and turning the car off and on for it to finally restart. Then subsequent times at following lights before I turn the auto shut off off it would restart but struggled to. I have taken it to the dealership and called Honda Corporate and both tell me it is not throwing a code and therefore nothing is wrong with it.

NHTSA ID

11752324

Incident

Jul 15, 2026

Driving in city limits without any other vehicles nearby, the sunroof “exploded”. After immediately pulling over and inspecting the sun roof from outside the glass was buckled up, away from the interior of the car. The glass then all fell to the interior door.

NHTSA ID

11751853

Incident

Jul 20, 2026

Intermittent Auto Start/Stop failure: When stopped at a red light or stop sign, the car sometimes completely dies. Fails to restart: Releasing the brake pedal does not automatically restart the engine. Manual restart required: I have to manually restart the vehicle and shift back into Drive to proceed. Traffic concern: This process takes 10 to 15 seconds, holding up the traffic behind me.

NHTSA ID

11750877

Incident

Jul 10, 2026

I own a 2026 Honda Odyssey Elite equipped with the factory rear entertainment system and Apple CarPlay. When using Apple CarPlay navigation (Apple Maps, Google Maps, or Waze) while passengers are watching a movie on the factory rear entertainment system, every navigation voice prompt causes the movie playback to stop. After playback stops, the movie cannot be restarted from the vehicle controls. The only way to restore normal operation is to stop the vehicle, turn the vehicle completely off, restart it, reconnect Apple CarPlay, and restart the movie. However, the problem repeats the next time a navigation instruction is given. This creates a driver distraction because passengers immediately ask for the movie to be restarted, and the driver is presented with an infotainment system that does not respond as expected while the vehicle is moving. Drivers may attempt to troubleshoot or repeatedly interact with the infotainment controls instead of focusing on driving. My Honda dealership advised me they were able to reproduce this issue on multiple new 2026 Honda Odyssey vehicles on their lot, indicating that this is not unique to my vehicle. Honda Customer Relations has also been notified.

NHTSA ID

11750605

Incident

Jun 15, 2026

Rear windshield with possible spontaneous shatter first noticed at noon today. No signs of impact or vandalism. Car last driven 2 days prior and appeared normal last night. Vertical line fractures at the very edge of the glass on both sides concerning for manufacturing defect. Police report filed, no repairs made yet.

NHTSA ID

11750603

Incident

Jul 15, 2026

Dealer Message - American American Honda Motor Co., Inc. (AHM) is searching for certain 2026 Odysseys with a cusomer complaint of the electronic parking brake (EPB) switch inoperable. Customer may also notice a brake system warning indicator on the instrument panel with DTC C1120-14 Electric Parking Brake Switch Circuit Malfunction. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.

Dealer Message - American American Honda Motor Co., Inc. (AHM) is searching for certain 2026 Odysseys with a cusomer complaint of the electronic parking brake (EPB) switch inoperable. Customer may also notice a brake system warning indicator on the instrument panel with DTC C1120-14 Electric Parking Brake Switch Circuit Malfunction. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.

Dealer Message - American American Honda Motor Co., Inc. (AHM) is searching for certain 2026 Odysseys with a cusomer complaint of the electronic parking brake (EPB) switch inoperable. Customer may also notice a brake system warning indicator on the instrument panel with DTC C1120-14 Electric Parking Brake Switch Circuit Malfunction. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2026 Odysseys with a customer complaint of the electronic parking brake (EPB) switch inoperable. Customer may also notice a brake system warning indicator on the instrument panel. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.

Dealer Message - American American Honda Motor Co., Inc. (AHM) is searching for certain 2026 Odysseys with a cusomer complaint of the electronic parking brake (EPB) switch inoperable. Customer may also notice a brake system warning indicator on the instrument panel. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.

Dealer Message - American American Honda Motor Co., Inc. (AHM) is searching for certain 2026 Odysseys with a cusomer complaint of the electronic parking brake (EPB) switch inoperable. Customer may also notice a brake system warning indicator on the instrument panel. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.