Engine misfire

What got replaced

Owners who name the part that was replaced mention the injectors (55 reports), the spark plugs (43 reports), the ignition coils (31 reports) and the sensor (3 reports).

Recalls and investigations

3 recalls on the engine cover the 2018 model year. A recall on the same system isn't always the same failure, so read the defect text.

All 6 recalls on the 2018 Honda Accord, with the owner complaints on each recalled system

NHTSA investigations into the engine on the Accord

None of these investigations covers the 2018 model year.

What owners paid

52 of the 143 reports quote a price. Each dot is one quote. The middle half runs $1,300 to $5,700.

When it happens

The middle half of failures fell between 70,000 and 118,000 miles, from the 62 reports that gave a mileage.

What owners wrote

“The head gasket is leaking coolant into cylinder #2. The car has misfired and has not been operable. The problem has been confirmed and diagnosed through the dealer. there were no prior warning lights to the issue until the car completely became inoperable from one day to the next.”

Filed Aug 18, 2026

“A loss of power while driving on the freeway created a dangerous situation and nearly caused an accident. The issue was diagnosed by the Honda dealer as a misfire of the 3rd cylinder due to a head gasket failure and a fuel injector issue. No other symptoms were detected as this appeared suddenly at the worst possible time.”

Filed Jul 11, 2026

“Multiple misfires, dealer says blown head gasket after replacing coil and spark plugs. Quoted 6,500. Car still runs is not running hot no exhaust smoking. Told this is common issue after fuel pump was on recall and replaced. After fuel pump replaced car smelled of gas for 3 weeks.”

Filed Jun 18, 2026

“Car seem to misfire alot , having a lot of head gaskets issues aswell as turbo issues, 10s of 1000s of people like me are experiencing these common problems, taking so much money out of our pockets when its should be handle the correct way”

Filed May 29, 2026

Guide Which lights mean pull over now? Warning lights by color and urgency

Other problems on this car

• Engine overheats or leaks coolant 349 reports
• Brakes grind, pulse or wear early 255 reports
• Engine stalls or loses power while driving 250 reports
• Brakes on its own (automatic emergency braking) 228 reports
• Engine failure, knocking or rod bearing 167 reports
• Fuel pump failure 155 reports
• Multiple warning lights come on at once 124 reports
• Infotainment, screen or backup camera fails 109 reports
• Adaptive cruise or lane keeping misbehaves 103 reports
• Turbo failure or loss of boost 101 reports
• Forward collision warning goes off or the camera drops out 92 reports
• Airbag warning light or recall 60 reports
• A/C blows warm or the compressor fails 55 reports
• Battery dies or the car will not start 42 reports
• Loses power when accelerating 41 reports
• Seat belt or seat problems 36 reports
• Paint peels or body rusts 28 reports
• Traction control or StabiliTrak light comes on 26 reports