2021 HONDA ACCORD Complaints

The vehicle suffered an unexpected loss of engine compression and dropped into a dangerous Limp Mode while driving due to a Cylinder 3 Misfire code (P0303). The manufacturer dealership misdiagnosed the mechanical issue using an unrelated 2.0L engine service bulletin (SB23-026) to clear the error. Six months later, the dashboard completely illuminated again with code P0299 (Turbocharger Underboost) caused by progressive pressure and compression loss across the 1.5L turbo engineering components. Upon post-visit inspection, engine fluids were found severely depleted. This ongoing engineering failure causes a sudden loss of vehicle motive power on public highways, creating a severe, recurring safety hazard that mirrors the active federal engine defect class-action litigation against American Honda Motor Co. This has happened 4 times with all the lights on my dash coming on Dec 2025, May 2026, June 2026 (2x)

The contact owns a 2021 Honda Accord. The contact stated that while driving at an undisclosed speed, the vehicle decelerated and was hesitating while accelerating. The vehicle was taken to the dealer, where the spark plugs were replaced. The contact stated that months later, the vehicle experienced the same issue and was taken back to the dealer, where it was diagnosed with a blown head gasket. Two months later, the spark plugs were replaced again. Another two months later, additional components were repaired. The vehicle had been at the dealer for several months and the technicians were unable to determine the cause of the failure. The low engine oil warning light was illuminated, even though the engine oil level was not low. The dealer was unaware of the cause of the failure and stated that the engine needed to be dissembled for further inspection. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 133,000.

The contact owns a 2021 Honda Accord. The contact stated that while driving at an undisclosed speed, the navigation system independently switched to random screens and made random phone calls. In addition, the contact stated that the failure had occurred while the GPS was activated. The dealer was made aware of the failure. The contact was recommended to take the vehicle for a diagnostic test. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 72,693.

While driving to work, the radio seem to have a ghost inside the radio. The screen has a mind of its on. The radio turns itself off and on by itself. It’s a safe hazard to driving with all that is happening. The radio will beep constantly while driving down the road and my teenager will not driving my car, due to being scared

I have been experiencing what’s being called “ghost touches” on google. This is a known issue that needs to be addressed. Also VIN number starting with 1HGCV need to be added to the fuel pump recall list. I’ve had to change both systems.

I am filing a complaint regarding the premature head gasket failure on my 2021 Honda Accord, which failed on May 28, 2026, with only 89,000 miles on the vehicle. A head gasket is a critical engine component that should last well beyond 89,000 miles under normal driving conditions and proper maintenance. I purchased this vehicle because of Honda's reputation for reliability and longevity, and I am extremely disappointed to experience such a major engine failure at this mileage. After researching the issue, I found numerous reports from other Honda Accord owners experiencing similar head gasket failures, particularly in newer models equipped with the 1.5L turbocharged engine. Many owners report engine misfires, coolant loss, overheating, and costly repairs at relatively low mileage. This suggests there may be a broader issue affecting these vehicles rather than normal wear and tear. My vehicle has been properly maintained, and I did not expect to face a repair of this magnitude before reaching 100,000 miles. The cost of replacing a failed head gasket is substantial and places an unfair financial burden on owners who reasonably expect Honda vehicles to provide dependable service. I respectfully request that Honda review this matter, investigate the growing number of similar complaints, and provide assistance with repair costs. I believe Honda should stand behind its products and support customers who experience premature component failures. Thank you for your attention to this complaint. I look forward to a prompt response and a fair resolution.

Odometer Fraud. The contact purchased a 2021 Honda Accord. The contact stated that while attempting to register the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 76,566 and at the time of registration, it was discovered that the mileage was 111,139.  

Infotainment center has phantom touches, the screen also freezes up and goes completely black when it is connected to a phone and also when it’s not connected to a phone. When car is connected via CarPlay for directions it will not display all the time or it will completely shut off in the middle of the directions, the only way for it to unfreeze or cut back on is if the car is turned off which makes it very dangerous. This has been happening for 2 years.

I have 2 issues and not sure if they are related 1.SRS system light came on and says see dealership. This one happened about 2 weeks ago. 2. While driving today all the lights on my dash came on including the check engine and all warning notices were going off. I was driving when this happened and it was alarming because I didn’t know if my car was going to die while I was driving. Neither problem have been confirmed by the dealership because they want 199 just to diagnose and does not include repair cost No one has inspected the vehicle No previous warning signs prior to either of these both happening

I have taken my vehicle in 3 times to have the recall repair completed and each time the dealership said they did it just for me to have checked the nhtsa website to see that it has not been completed.