This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.
So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.
I would like to report a known issue with the Honda Accord Sport 1.5t. My head gasket went out Aug. 2024 with about 100,000 miles on the dashboard. The cost to change it was about $4100. My Turbo Charger is now out Dec. 2025, and they are quoting me about $2100 before taxes. The dealership did advise that there is a known issue with the head gasket going out prematurely due to a default with the engine. They also advised that the turbo charger normally goes out after the head gasket is replaced. Please work on having the engine recalled. This is awful. After researching this issue, I see thousands of others are having the same issue. Best regards, Yvette J.
Driving on the freeway and the car started to lose power and de-cellerate, eventually stopping. After leaving it overnight, I returned and the car started. I slowly drove it to a dealership within 3 miles. The dealer said they could not replicate the issue. They did find a "labor diag found in history code P0304".
I had just left my job in Albany and was headed to the Latham area, while merging into traffic on I-90 West my 2020 Honda Accord EX-L started to rattle and slow down, numerous lights illuminated simultaneously on my dashboard. I immediately pulled off the north shoulder and restarted my vehicle to no avail, the dashboard lights were still lit and my vehicles speed and steering were compromised. My safety was put at risk due to the immediate issues as previously described while in heavy traffic, I could have easily been involved in an accident due this issue. The system Keeler Honda advised me that had failed was allegedly the head gasket leaking coolant into the engine by means of cylinder four. I was later informed by Keeler that this is a common issue with the accord 1.5 L turbo engines. The problem has been verified by Keeler Honda. There was no prior warning light on my dash that would have indicated there was an issue with my vehicle, the lights only all appeared once the incident had occurred.
The car when pressing the accelerator will decelerate and go limp and won-??t move. This is happening to a lot of Honda accords. This will cause an serious accident.
- Spartanburg, SC, USA
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Was driving on the freeway approximately 70 mph on saturday October 4th, When car goes into limp mode and throws a engine light on, leaving me stranded on the freeway. Another occurrence one week later on Saturday October 11th when car went into limp mode again driving around 35 mph in the city. Both cases I turned the car off and on and returned back to normal, come to find out with the dealer it is a blown head gasket and their is coolant leaking into cylinder 3. A BLOWN HEADGASKET!!!!! Everyone is having these problems
The contact owns a 2020 Honda Accord. The contact stated that while driving approximately 65 MPH, the vehicle lost motive power. The contact stated that several unknown warning lights were illuminated on the instrument cluster. The contact stated that the vehicle was vibrating and jerking while the accelerator pedal was depressed. The contact was able to pull over when the vehicle stalled. The contact was able to restart the vehicle, but the vehicle was sputtering and vibrating as if the vehicle was going to stall. The contact pumped the accelerator pedal, and the vehicle responded as needed. The contact stated that the vehicle was unable to exceed 15 MPH. The contact was able to drive the vehicle to the residence. The contact had not taken the vehicle to a local dealer or independent mechanic to be diagnosed or repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 67,000.
The contact owns a 2020 Honda Accord. The contact stated that while driving approximately 30 MPH, several unknown warning lights illuminated. The contact pulled over and turned off the vehicle to reset the instrument cluster; however, the warning lights remained illuminated. The contact checked under the hood to check if the battery terminal was loose, but found no issues. The contact had taken the vehicle to an independent mechanic who replaced the 12-Volt battery; however, the warning lights returned. Additionally, the contact stated that while stopped at a traffic light or while depressing the brake pedal, the vehicle was vibrating. The contact had not taken the vehicle to a local dealer or to an independent mechanic to be diagnosed or repaired. The contact had stopped driving the vehicle. The contact stated that prior to the instrument cluster failure, the low-pressure tire monitor warning light was intermittently illuminated. The tire pressures were checked; however, there was no indication of a tire pressure being low. The contact had also felt the vehicle vibrating, but it was not as noticeable as until recently. The manufacturer was not informed of the failure. The failure mileage was approximately 40,000.
Emissions system problems see dealer light came on took to autozone reading stated turbocharger but light went off. Later all warning lights came on so took to dealership they advised turbocharger as well. After for weeks no light no longer on. More recently emissions system problems light started coming on and off, but this time it will go days without being on then will turn on or it can be on when I first start driving then later it's no longer on. I also had issue with all lights coming on again went to autozone got brake fluid since it was low and they went off. I feel it maybe issue of faulty sensory due to fact car drives fine and light doesn't stay on consistently. I also see Honda currently has proposed class actions for defected turbochargers so wonder if that issue with my car.
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.
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.
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.
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
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.
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.
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.
Subject: Turbocharger Underboost -?" Safety Concern on 2020 Honda Accord EX-L I am reporting a serious safety issue with the turbocharger system on my 2020 Honda Accord EX-L with the 1.5L turbocharged engine. The vehicle has repeatedly triggered Diagnostic Trouble Code P0299 (Turbocharger Underboost), indicating the turbocharger is failing to generate sufficient boost. As a result, the vehicle suffers from sudden loss of power, especially during acceleration and highway merging. This power loss occurs without warning and severely impacts my ability to drive safely in traffic, increasing the risk of accidents. There are currently no recalls or manufacturer advisories addressing this issue, despite numerous online reports from other Honda owners with the same engine and problem. This suggests a possible design flaw or premature component failure in the turbocharging system. Given the frequency of this issue and its impact on vehicle safety, I am requesting that NHTSA investigate this matter and consider whether a recall or manufacturer service campaign is necessary. Symptoms include: -??Sudden engine power loss -??Error code P0299 -??Inability to accelerate safely -??Safety risk during lane changes and merges First occurrence: April 20, 2025 Ongoing issue: Yes Mileage at first occurrence: 111, 000 Crash or injury: No Thank you for your attention to this matter
Car reached 113,000 miles and started having misfires in cylinders 1&2. After being told it needed new coil packs and spark plugs, and replacing those it is still misfiring. Paid for diagnostic again and was told cylinder 1&2 were wet and most likely it was the head gasket failing.
-??Alleged Defect:-??The defect is described as the engines' inability to handle the increased heat and compression of a turbocharger, causing coolant leakage and damage to the engine's head gasket.?-??-??-??
A D V E R T I S E M E N T S
- Opelousas, LA, USA