2020 Honda Accord · symptom sheet
Head gasket fails or coolant leaks into the engine
- 26owner reports
- 100,000median miles
- 0involved a crash
Newest report Aug 25, 2026 · checked Oct 2, 2026
26 of the 28 reports of overheating on the 2020 Accord describe head gasket failure.
Part of Engine overheats or leaks coolant (28 reports)
Tick what matches of 26 reports
Head gasket failure on other Accord years
Report counts are for each model year on its own, so a newer car has had less time to collect them. Model years with too few reports of it for a sheet: 2014, 2015, 2016, 2017, 2021, 2022, 2023, 2024, 2025, 2026.
What this problem usually is
This is the narrower sheet inside overheating and coolant leaks for reports that name the head gasket. The difference from the wider sheet is where the coolant goes: instead of dripping onto the driveway, it disappears inside the engine, into the cylinders or the oil.
What got replaced
Owners who name the part that was replaced mention the head gasket (26 reports).
Recalls and investigations
No recall on the engine covers the 2020 model year as of Oct 2, 2026.
NHTSA investigations into the engine on the Accord
Honda high engine speed. Closed may 4, 1987.
None of these investigations covers the 2020 model year.
When it happens
The middle half of failures fell between 85,741 and 120,000 miles, from the 11 reports that gave a mileage.
Is this a known problem?
The manufacturer has sent NHTSA 1 service bulletin or notice for the 2020 Honda Accord that deal with this problem. Newest first.
Federal rules make a manufacturer send NHTSA a copy of any notice about a defect that goes to more than one dealer or owner. Most of these are service bulletins, the repair instructions manufacturers send to dealers. NHTSA generally leaves safety recall bulletins out of this file, and recalls are listed separately.
Under certain conditions, the cylinder head gasket effectiveness may be reduced which may cause vehicles to experience overheating, coolant loss, misfire and/or DTCs P0300 thru P0304 stored.
What owners wrote
“Took my car to Honda they stated my head gaskets and turbo charger was bad .. every shop that i talked to about the problem had stated that they have been getting a alot of my models coming in with the same issue”
Filed Jul 24, 2026
“I take my car for updates (Recall) and now i am being told that the head gasket is blown and damaged the injectors The powertrain might pay for the blown head gasket but not the injectors (which were damaged due to the head gasket blowing) no coolant but the car never ran hot. Honda is trying to stick to me to pay out almost $7000.00 which is wrong when it went to them for a recall”
Filed May 21, 2026
“Car just started jerking and eventually stopped. I had it checked and was told the turbo was gone. Took it to Honda they said the head gaskets are blown. The car is 5 1/2 years old and it not one time ever ran hot. Iâm not the only one with this issue. Honda needs to do something to fix this. Every car that goes to service has this issue something is definitely not right”
Filed Mar 6, 2026
“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.”
Filed Apr 22, 2025 · 113,000 miles
Should you keep driving it?
This page can't tell you that. 0 of 26 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.
File your own report with NHTSA. Complaint counts are how a problem gets an investigation. How reports land on this sheet.
Guide Taking it to a shop? How to describe this problem so it gets found
Other problems on this car
- Brakes grind, pulse or wear early 57 reports
- Brakes on its own (automatic emergency braking) 53 reports
- Airbag warning light or recall 35 reports
- Check engine light or misfire 34 reports
- Multiple warning lights come on at once 33 reports
- Forward collision warning goes off or the camera drops out 32 reports
- Engine stalls or loses power while driving 31 reports