2016 Honda Odyssey

the problem only happens after driving for more than 30 minutes. when I stop at a light, the engine starts shaking and stalls. the starter seems cranking normally, but it takes about 3 attempts and about 40 seconds to restart. One day, the engine stopped while I was driving. There is no Check Engine Light. I took it to Honda dealer. but they keep saying they cannot replicate the problem. It is so dangerous to drive this car.

I have needed to replace my spark plugs multiple times because of an issue where, apparently when in eco mode, the pistons in the third cylinder flood with oil that causes the spark plugs to misfire. I was informed this is an issue common to Honda Odysseys on or about May 19th, when I was experiencing a misfiring engine and brought it to AAA Reynoldsburg on E Broad Street in Reynoldsburg, OH. Honda is aware of the issue, and when I brought my car to Honda in July, after the new spark plugs started misfiring, one of the people at Honda told me the issue is because of government regulations that require lowering emissions. I don't know if that's objectively true or not, but if it's an issue Honda is aware of, as they are, they should correct the issue without charging me for the 'engine overhaul' or the new spark plugs. I have an email attachment showing the spark plug issue and other issues with the car. I don't hold Honda at fault for some of the issues, but if they know about the underlying cause that contributes to a misfire, I believe they should correct it. The video will not upload, but I am including a link to the video Honda sent me that shows the issues with the car, including the spark plugs misfiring because of one of the pistons flooding with oil. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

In December 2021 My 2016 Odyssey experienced serious engine breakdown and could not be driven due to deterioration of piston ring functions in cylinders 1-3. That malfunction caused serious engine problems. It was diagnosed and repaired by Riverside Honda, [XXX] on 12/28/2021. The total cost paid by me for that repair, and for no other unrelated work, was $4598.10. In July 2025 I received from Honda a notice of a recall for this same specific issue. I was informed that I may be eligible for reimbursement since the repair work was already done. I filed the required documents. Almost one year later, on XXX I received a check from American Honda Motor Co in the amount of only $2352.32. I called Customer Service and was given a case number. I caseworker informed me that the reimbursement amount was accurate in that other work not related to the issue was not reimbursable. I stated my disagreement that the work order reflected all work was related to the issue and that the full reimbursement was justified. I asked the case manager if there were any appeal options available. She said quite emphatically the there are none. She made no mention of the NHTSA or any other options that I requested. I request that NHTSA intervene and investigate as to whether or not Honda acted appropriately in reimbursing for only half of the repair cost. I request that I be paid the entire amount, less what has already been paid me. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Regarding: Reimbursement Request for Warranty Extension Service (Service Bulletin 25-061) ​I am formally requesting a reimbursement of $1,859.90 for repairs performed on my 2016 Honda Odyssey (VIN: [XXX]). ​On XXX, I visited Phil Hughes Honda in Athens, GA, due to engine misfire symptoms, specifically P0301. The dealership performed repairs in accordance with Service Bulletin 25-061, which included cylinder head disassembly, replacement of piston rings (cylinders 1-3), replacement of spark plugs, and other related services. ​I paid a total of $1,859.90 for these repairs. Given that this service addresses a known defect covered under the manufacturer's extended warranty program for this vehicle, I believe I am entitled to a full reimbursement of these costs. I have attached all relevant service invoices and the final payment receipt as documentation of the services performed and the expenses incurred. I request a review of this claim and the processing of my refund at your earliest convenience. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I am filing this complaint regarding Honda's reimbursement program associated with the piston ring warranty extension related to engine misfire issues on certain vehicles. Prior to Honda issuing the warranty extension, I paid out of pocket to have the repair completed at an authorized Honda dealership. After Honda announced the warranty extension and reimbursement program, I submitted a reimbursement claim along with all required documentation and proof of payment in August 2025. My reimbursement claim has now been pending for approximately 11 months. Since submitting the claim, I have contacted Honda numerous times seeking an update. On multiple occasions, Honda representatives advised me that the reimbursement had been approved and was simply awaiting issuance of payment. However, no reimbursement has been received. Due to the lack of progress and conflicting information, I filed a complaint with my state's Attorney General's Office. In response to that complaint, Honda stated that the reimbursement claim was still under review, which directly contradicts what I had previously been told by Honda representatives. I have complied with all documentation requirements and have made repeated attempts to obtain a clear answer regarding the status of my claim. Despite this, I have not received reimbursement, a definitive status update, or a reasonable explanation for why a reimbursement claim related to a known warranty extension issue has remained unresolved for nearly a year. I am requesting review of this matter and whether Honda is properly administering and processing reimbursement claims associated with this warranty extension program within a reasonable timeframe.

09/01/2025 - Claim submitted under recall for "2016 Honda Odyssey, the Variable Cylinder Management (VCM) system can cause premature piston ring wear, leading to oil consumption, spark plug fouling, and misfires (P0301-P0304)" 09/24/2025 - Honda sent email confirming all required documents submitted and reimbursement would be processed in 6-9 weeks. 03/13/2025 (today) - No reimbursement received. Have called Honda claims 3 times over 3 months with no further information. Representatives state that reimbursement department very busy, will "flag for expediting", and to "call back in a week". It has been 24 weeks, way longer than acceptable processing by the OEM.

While driving on I-85 in GA in 2024, my engine started to misfire and I had to pull over. At that point, I turned the engine off. If this had happened in the evening or on a road without a shoulder, I could have been at risk of being hit and/or stranded. After waiting a dew minutes, I restarted the engine and was able to make it home. My husband took it to our mechanic who indicated that the engine had registered a cylinder misfire (DTC P0303). Apparently, this was a serious flaw recognized in earlier (2008-2013) Honda Odysseys with Variable Cylinder Management (VCM). See [XXX] , et al. v. American Honda Motor Co. Inc., Case No. XXX, in the U.S. District Court for the Northern District of California. I received a notice from American Honda concerning a warranty extension related to TSB 25-061, which would seem to indicate that this is a known flaw that should be handled as a safety recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2016 Honda Odyssey. While the contact's wife was driving at an undisclosed speed, the DTC: P0301 (Cylinder #1 misfire) was displayed. The vehicle was driven to the shoulder of the road and turned off. The driver attempted to restart the vehicle, and the vehicle restarted. Several unknown warning lights were illuminated. The vehicle was taken to the residence. The vehicle was taken to the independent mechanic, where it was diagnosed with spark plug failures due to an oil leak. The six spark plugs were replaced. The vehicle was repaired. The contact stated that a year later, the contact received an extended warranty regarding the failure. The manufacturer was made aware of the failure, and a case was filed. The contact requested to be reimbursed for the repair. The contact stated that the initial reimbursement request was denied. The contact resubmitted the case and all the requested documentation. The contact submitted all the requested documentation. In addition, the contact stated that the mileage was under the mileage limit. The failure mileage was approximately 89,689.

Repeated misfires despite repairs at a certified Honda dealership. The van has been under service since the end of August 2025. The vehicle is power off and shut down while driving or cause significant engine/transmission shuddering and stalling. I have had my kids in the vehicle when this has happened on a highway. All service records have been done by certified servicers.