What 340 owners told NHTSA about the 2020 Honda Accord Plug In Hybrid

Electrical drain in system causing premature battery failure and electrical misfiring that causes the car to shut off and flashing a brake warning message to contact dealer and once this occurs car won’t start until Honda link and hands free pairing are reconnected. Issue is if the misfiring drains the battery, driver is not able to reconnect the cars apps and pair the Bluetooth, therefore, car is not will be immobile until battery is recharged.

NHTSA ODI 11682206

On July 30, 2025, my Honda’s Collision Mitigation Braking System (CMBS) randomly activated without any obstacles in front of the vehicle. Since then, this issue has happened numerous times while driving. When the incident occurs, the system flashes a “Brake” warning and suddenly applies the brakes while I am driving. This creates a serious risk of a rear-end collision, loss of control, or bodily harm. I had the vehicle inspected by an authorized Honda dealership on August 1, 2025 for this issue. Despite the inspection, the malfunction continues to occur. Although I have not yet been involved in an accident, this defect poses an ongoing safety hazard for myself, passengers, and others on the road. I request that NHTSA investigate this matter.

NHTSA ODI 11681818

When I turned my car on after work every warning light on the dashboard was on. A few of the warning messages read: Collision Mitigation Braking System Problem, Adaptive Cruise Control System Problem, Hill Start Assist Problem, Electric Power Steering System Problem. I first took it to Oreilly's to have the diagnostics ran. They told me the ignition coils needed to be replaces. We replaced the ignition coils and the spark plugs. The lights stayed off for about 3-4 days and then the same thing happened again. I took it to the dealership to be checked out and they told me that the head gasket had failed and coolant was leaking into the cylinder and causing the engine to overheat.

NHTSA ODI 11680908

The contact owns a 2020 Honda Accord. The contact received notification of NHTSA Campaign Number: 24V064000 (Air Bags ); however, the part to do the recall repair was unavailable. The vehicle was taken to the dealer, but was not diagnosed or repaired. The dealer confirmed that parts were not yet available for the recall repair. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure.

NHTSA ODI 11680442

Car has only 73k miles , fails to accelerate unless it’s left to run for an hr . All lights on dash . Replaced spark plugs, coils and battery to no avail and Took to get diagnosed and was told head gasket and quoted 7k to fix. When car does drive it immediately accelerates to 40 on dash which could cause collision leaving me to feel unsafe to drive .

NHTSA ODI 11679363

The Honda Collision Mitigation Braking System (CMBS) will randomly activate without any obstacles in front of the vehicle. Consequently, increasing the risk for car accidents, loss of control, and bodily harm. The car has not been inspected by a dealer or certified mechanic for this problem. However, the vehicle is available for inspection and repair as needed. While the incident occurs, the CMBS warning system will flash ‘Brake’.

NHTSA ODI 11678012

When the fuel tank was at 1/4 full/empty, the car started stalling on the highway. We were able to go to a gas station and filled the gas tank. The problem was gone. We went to our mechanic but he could not find the problem. A few day's later the gas tank was 1/2 full/empty and the same problem happened. We filled it up and the problem was gone. We went back to our shop and the mechanic did a diag but didn't find any fault codes. He advised to go to the Honda dealer to take a look at it.

NHTSA ODI 11678027

My car displays every single light on the dashboard it’s been happening for about a year. It starts to shake when I turn it on sometimes it does it sometimes it doesn’t but now it’s a reoccurring issue and has been happening for the past six months we’ve brought it to everywhere. The engine is stalling and won’t go over 20 mph. I’m lucky if it gets to 40 . There’s a recall on my car, but my van is not covered underneath it. Looking to see if this can be looked into since so many people I have spoken to says that that’s what they’re experiencing until they got the recall fixed

NHTSA ODI 11677797

When driving my car it will phantom break when there is nothing in front of it going down the highway 5060 miles an hour and it’s done at numerous times. I have not been in an accident yet, but it’s something that keeps occurring on my car.

NHTSA ODI 11677516

Every light on the dash board is on

NHTSA ODI 11676831

Car is giving a P0301 error. Replaced coils and spark plugs still giving error. The problem is fuel inejectors. Gives car a rough idle at start up.

NHTSA ODI 11676060

I noticed a loud grinding noise and reduced braking power coming from my 2020 Honda Accord while driving at normal city speeds. A local mechanic inspected it and found that the rear brake caliper was sticking and causing premature wear. I contacted Honda service, but they refused to cover the cost or inspect it under goodwill, even though similar issues have been reported with other Honda models. This issue puts my safety at risk as braking is compromised and steering becomes harder. The problem was confirmed by a local certified mechanic and is available for inspection if needed.

NHTSA ODI 11675720

Malfunctioning fuel injectors causing misfires stem from a known issue with faulty fuel injectors; a problem widely reported across multiple Honda models equipped with the 1.5-liter turbocharged direct injection engine. Notably, the Honda CR-V (2019–2023), Civic (2019–2022), and Accord (2018–2022) have all been consistently linked to fuel injector failures. The most serious safety concern associated with this defect is the potential for sudden throttle changes, which can trigger the check engine light, cause the engine to lose drive power, hesitate, or even stall—all of which significantly increase the risk of a crash or injury.

NHTSA ODI 11675239

To Whom It May Concern, I am writing to formally report a serious safety issue involving the automatic emergency braking (AEB) system on my Honda Accord 2020. The system has been engaging randomly and without cause, abruptly applying the brakes when there is no obstacle or hazard present. On multiple occasions, this malfunction has occurred while driving at normal speeds, including on highways and in moderate traffic. These sudden, unprovoked braking events have created extremely dangerous situations, nearly causing rear-end collisions and putting both myself and other drivers at risk. Despite there being no obstruction in front of the vehicle, the system behaves as though an emergency stop is necessary. This issue not only undermines the purpose of the safety feature but also significantly increases the risk of an accident due to unexpected deceleration. I urge Honda to thoroughly investigate this issue, as it appears to be a potentially widespread and dangerous defect. I am requesting that the company: •Address and correct the fault in my vehicle’s AEB system at no cost •Provide a clear explanation of the root cause •Inform me of any recalls or technical service bulletins (TSBs) related to this problem

NHTSA ODI 11675390

Subject: Request for Recall Due to Persistent Dashboard Warnings and Engine Malfunction Dear [Manufacturer Honda] / NHTSA, I am writing to formally report a serious issue with my vehicle. All of the warning lights on the dashboard remain illuminated and do not turn off. Additionally, the vehicle occasionally becomes undriveable, unable to accelerate beyond 5 miles per hour. I was informed that the problem is related to the engine. I brought the car to a dealership for inspection, but they refused to repair the issue because the vehicle had just passed 40,000 miles. They stated that the warranty no longer covers the repair, despite the severity of the malfunction. After doing research and speaking with other vehicle owners, I have learned that this issue is not unique to my car. It appears to be a widespread problem affecting many vehicles of the same make and model across the United States. Given the safety risks and the number of affected vehicles, I kindly request that you investigate this matter thoroughly and consider issuing a recall. Owners should not be left responsible for costly repairs when the problem is clearly a recurring defect. Thank you for your time and attention.

NHTSA ODI 11674163

Driving on I70 mm152.2 my transmission went out and I was left quickly slowing on the interstate. I was in left line and cars were passing on the right. I needed to get over because I could not pull over to the left. Thought I might get stuck stopped on the interstate but was able to get over safely. Car only had 88000 miles on it and was less than 5 years old

NHTSA ODI 11674208

I continue getting a message Supplemental Restraint System Problem. See Your Dealer. Also, many times not all my doors lock and I have replaced the battery for key fob numerous times and no luck still while driving I hear a noise as if the doors are locking or unlocking on its own.

NHTSA ODI 11671957

During a forward-side lane departure collision in my 2020 Honda Accord, the Body Control Module (BCM), forward collision radar system, braking assist, and Vehicle Stability Assist (VSI) all failed to activate. As a result, the vehicle did not brake, warn, or stabilize before impact. The airbags also failed to deploy during the crash. My safety and the safety of others were put at serious risk, as the vehicle did not respond as designed despite being equipped with these systems. The car is now undrivable but available for inspection. This issue has not yet been confirmed by a dealer due to the car's condition, but similar failures have been reported in other 2020 Honda Accords already under recall. The insurance company did not request vehicle data and did not inspect the systems. There were no warning lamps, alerts, or messages prior to the failure; the malfunction occurred without notice. I am requesting that this vehicle be added to the existing recall list related to BCM and safety system failures.

NHTSA ODI 11671769

All the lights coming on on the dash

NHTSA ODI 11671319

Vehicle will randomly slam on brakes to a dead stop, engaging my seatbelt when engine braking behind a vehicle. Usually happens on surface streets when the vehicle in front of me is turning into a driveway/tight right turn. My velocity is decreasing & I am not at risk of colliding with the vehicle every time. System does not seem to register engine braking with a manual transmission as “braking.” I’ve nearly been rear ended several times due to coming to a dead stop in traffic. I’ve asked Honda how to permanently disable the system, with the only advice to turn it off manually every single time I start the vehicle.

NHTSA ODI 11669773

Right front turn signal does not work also fm/am radio does not work as well as trunk release button on trunk itself. Had both head lights replaced thinking it was an LED issue with turn signal and was told by mechanic that BCM is the issue. Called Honda regarding the recall to the BCM and was told my car is not apart of said recall because it didn’t come from a certain region but seems to be all of Honda accords have this issue regardless of plant manufacturer

NHTSA ODI 11666911

Received the following message "Supplemental Restraint System Problem. See Your Dealer" on my car dashboard. Brought to dealer and was told the issue was with the front passenger airbag cut on/off indicator. Was told this needed to be fixed or the airbag would not work. It was not covered by Honda as it was over 3 years and 36000 miles. Spoke to Honda and was informed I am not the only one with this problem but they would not cover it. Had to go out of pocket almost $500 on a malfunction that should be covered by a recall.

NHTSA ODI 11665064

My 2020 Accord has had a recall on it for quite some time regarding the passenger side airbags. I have reached out to my dealership multiple times about this recall and I am told they do not have parts to fix it. They are on back order. I even reached out to a different dealership and has the same issue is pointless to recall if we can’t fix the problem. How can I get someone to fix this or find the components necessary to at least

NHTSA ODI 11664592

The turbo apparently went out without any warning as I was pulling onto the highway from work 5/22/25. I was almost creamed by the cars flying down the road. My vehicle is very well maintained , no issues ever until this. It upsets me rightly to find that this is not only been reported to you all, but there are people who are having to do class action lawsuit to try to get Honda to be held accountable at the very least since they refuse to recall this engine. There are thousands of people out here I have engine installing. Anytime an engine saws there is a danger whether I actually had an accident or made a report or not. And for the manufacturer to know that they have this issue and do nothing about it blows my mind. We can not allow car makers to put engines and cars that have known issues that lead to the lockdown and therefore stalling out of a brand new vehicle. Not everyone knows they need to come here and file a complaint. There are so many more people with this same issue. I don’t have an incident report because by the grace of God I was able to avoid the incident. How many people have to get hurt before we make Honda accept this critical engine damage is their responsibility to fix. That doesn’t even include the thousands of people who have spent their hard earned money to purchase a car. They’re supposed to be number one and safety only to have to deal with the engine installing. Is my hope that you would look further into any investigations you may already have people should not have to file lawsuits to get Honda to fix this. It is dangerous and it is not acceptable. On top of that it’s extremely pricey a big deal to force your customer to foot when they’ve done nothing wrong.

NHTSA ODI 11664596

I have a seat sensor airbag code and a b0d5 code

NHTSA ODI 11664146