Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2020 Honda Accord owners, lightly cleaned up (personal details are redacted by NHTSA).
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 owns a 2020 Honda Accord. The contact stated that upon intermittent starts of the vehicle, several, various warning messages would appear on the instrument panel. Warning messages such as tire pressure monitor, brake system problem, brake hose system,etc would all appear on the instrument panel and would remain on the instrument panel until the system would be cleared by the dealer. The vehicle had been taken to the dealer on multiple occasions to address the failure; however, the dealer could not diagnose the failure. The vehicle was then taken to Honda Of Tomball(22727 Tomball Pkwy, Tomball, TX 77375) where they diagnosed the vehicle with a defective head gasket. The contact refuted the diagnostic and took the vehicle back to the original dealer where they agreed with the contact that there was not an issue with the head gasket. …
The contact owns a 2020 Honda Accord. The contact stated while driving at various speeds, the vehicle lost motive power. The check engine warning light and other unknown warning lights were illuminated. Additionally, messages indicating an emission and TPMS failure, and other unknown messages were displayed. The contact was able to pull over to the side of the road. The vehicle was able to be restarted. The contact was able to continue driving; however, the failure recurred after driving for several miles, causing the contact to pull over to the side of the road several times. The contact stated that a mobile mechanic had replaced the spark plugs and the ignition coils several times; however, the failure persisted. The vehicle was taken to the dealer, where it was diagnosed that the head gasket had failed and needed to be replaced. The vehicle was not repaired. …
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 contact owns a 2020 Honda Accord. The contact stated that after starting the vehicle the engine was hesitant to start and while driving the flashing check engine light had illuminated and the vehicle did not accelerate past 40 MPH. The vehicle was slowly driven to the local dealer who diagnosed that the both the engine head gasket and water pump needed to be replaced. The vehicle was not yet repaired. The manufacturer was not yet contacted. The contact was informed that the VIN was not included in the NHTSA Campaign Number: 23V858000(FUEL SYSTEM, GASOLINE). The contact indicated that the vehicle had experienced that same failure listed in the recall. The failure mileage was 100,000.
The contact owns a 2020 Honda Accord. The contact stated while driving 40 MPH, the vehicle inadvertently decelerated without warning. The contact stated that after several minutes the vehicle started to operate as needed. On another occasion, while driving 35 MPH, the brake assist activated independently causing the vehicle to brake suddenly. On another occasion, while attempting to start the vehicle, the vehicle failed to start-up after several attempts. The contact stated that several unknown warning lights were illuminated. The vehicle was towed to the dealer for diagnostic testing. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was 62,000.
The contact owns a 2020 Honda Accord. The contact stated while driving 25 MPH, the vehicle began to shudder. The contact stated that several unknown warning lights were illuminated. The message to see the dealer was displayed. The vehicle was taken to the local dealer, where it was diagnosed that the low-pressure fuel pump and a high-pressure fuel pump needed to be replaced. The vehicle was repaired. The manufacturer was contacted, and the contact was informed there was no recall coverage on the vehicle. The contact stated that the failure was like NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline). The failure mileage was approximately 62,000.
The contact owns a 2020 Honda Accord. The contact stated while driving 70 mph while attempting to pass another vehicle, the check engine warning light was illuminated and the vehicle went into limp mode. The contact was able to exit the highway and park safely. The vehicle was not drivable. The contact towed the vehicle to the local dealer where it was diagnosed with a misfire on cylinders 1 and 4. The local dealer reset the code. The vehicle was repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 13,762.
The contact owns a 2020 Honda Accord. The contact stated while entering a parking lot at 10 MPH, he started to hear an abnormal noise. The contact stated no warning light was illuminated. The contact continued driving the vehicle but shortly after the drive shaft fractured. The vehicle was not drivable. The contact towed the vehicle to the local dealer, where it was diagnosed with needing the driveshaft to be replaced. The vehicle was repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 39,000.
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
Engine complaints in other Accord years
Frequently asked questions
How common are engine problems on the 2020 Honda Accord?
NHTSA has 74 complaints about the engine & cooling of the 2020 Honda Accord, 20% of the model year's 364 complaints.
Is there a recall for 2020 Honda Accord engine problems?
No. NHTSA lists no engine & cooling recall for the 2020 Honda Accord, though it has 5 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2020 Honda Accord engine problems start?
Half of the complaints with a recorded mileage happened before about 40,000 miles, and 45% before 25,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.