8 complaints reported

2021 Honda Accord Engine

Owner-reported problems and safety issues filed with NHTSA. Review common failures, severity levels, and complaint trends over time.

Reports
8
Crashes
0
Fires
0
Injuries
0

Complaint Timeline

Chronological view of owner reports

May 2026

Financed a used 2021 honda accord sport in April of 2024 with 68,671 miles. About a month ago, with no warning signs of any sort such as overheating etc...my car did not want to start, finally started but was sputtering with a rough idle, my dash lit up with like 7 or more warning lights. Including a flashing check engine light. All the were safety warnings from braking system not working, to power steering to emissions failure, etc... and to take to dealership. Got the car to a local mechanic to get a diagnostics reading and was told I had a misfire in cylinder 2. Replaced the #2 coil and spark plug. Thought everything was fine until picking up my daughter from school and then all those warning messages lit my dash up again including the flashing check engine light. Car started sputtering and went into limp mode. Lost power and by the grace of God was able t9 coast off the major Blvd away from traffic and out of harms way. Very, very scary. My life literally flashed before my eyes. Not only my life was in danger but my daughters along with other drivers around me. So I took it back to mechanic and he ran diagnostics again still had a misfire. He could not pin point the exact problem. Took it to the dealership and they confirm it was a faulty head gasket between CYL 2 and water jacket. And they quoted me a price of $5,998. Which i can not afford. And feel Im not responsible for catastrophic major mechanical failure. I maintenance my car regularly thru the dealership so they have record of me properly maintenancing the car. Head gasket failure at 80,000 miles is absolutely unheard of. Until I started researching and come to find out this is a design flaw made by Honda. I was flabbergasted with the amount of people with the exact type of problem. Im afraid that even after repairing this problem that it may happen again down the line. And that would be putting my life in danger. Vehicle is still at dealership being that I can not afford the repairs.

Type: Vehicle, Vehicle: 2021 HONDA ACCORD, Manufacturer: Honda (American Honda Motor Co.)
Incident: Jan 2026
Apr 2026

Starts Vehicle at cold start and notice right away engine turbulence, engine light flashing, lost some coolant and white smoke. Scan vehicle for codes, engine misfire #2.

Type: Vehicle, Vehicle: 2021 HONDA ACCORD, Manufacturer: Honda (American Honda Motor Co.)
Incident: Nov 2025
Feb 2026

All the lights came on in my car and it wouldn’t accelerate. Brought to dealership and they stated it was a blown head gasket and it was a known problem with the 1.5 turbo cars. There are also 2 others problems that are known problems with these cars and Honda isn’t doing anything about it.

Type: Vehicle, Vehicle: 2021 HONDA ACCORD, Manufacturer: Honda (American Honda Motor Co.)
Incident: Feb 2026
Jan 2026

Head gasket blew randomly. Just hit 100,000 miles. I was on the highway and my speed just started to decrease 65 to 35

Type: Vehicle, Vehicle: 2021 HONDA ACCORD, Manufacturer: Honda (American Honda Motor Co.)
Incident: Jan 2026
Jan 2026

Stretch timing chain 1.5 T, 86000 miles. It is very common in these motors. Just had to pay $2400 to have it replaced

Type: Vehicle, Vehicle: 2021 HONDA ACCORD, Manufacturer: Honda (American Honda Motor Co.)
Incident: Jan 2026
May 2025

Head gasket blown before 50k miles even at 30k miles ive seen it happen to my friend!

Type: Vehicle, Vehicle: 2021 HONDA ACCORD, Manufacturer: Honda (American Honda Motor Co.)
Incident: Oct 2024
Mar 2025

The contact owns a 2021 Honda Accord. The contact stated that while her son was driving at an undisclosed speed, the vehicle experienced a loss of automotive power and stalled. The vehicle was towed to the local dealer who diagnosed the vehicle and determined that the head gasket was blown. The vehicle was not repaired. The manufacturer was not yet contacted. The failure mileage was unknown.

Type: Vehicle, Vehicle: 2021 HONDA ACCORD, Manufacturer: Honda (American Honda Motor Co.)
Incident: Mar 2025
Sep 2021

While driving in heavy rain on interstate, vehicle experienced lack of power and flashing check engine light. Driver was unable to maintain speed. Pulled off at next exit and turned off. Roadside assistance was contacted immediately after pulling off. Vehicle restarted and ran normally after allowing it to remain off for approximately 1.5 hr. Roadside assistance was cancelled. Continued trip without further incident.

Type: Vehicle, Vehicle: 2021 HONDA ACCORD, Manufacturer: Honda (American Honda Motor Co.)
Incident: Sep 2021

Trend Over Time

Complaints by year

Quick Summary

The 2021 Honda Accord has 8 Engine complaints on file. Review the timeline above for detailed owner experiences.