2018 Honda Accord · symptom sheet
Check engine light or misfire
- 282owner reports
- 92,156median miles
- $4,400median quote
- 0involved a crash
Newest report Sep 23, 2026 · checked Oct 2, 2026
1083 of the 1,883 complaints on this car are about the engine. 282 of those describe misfire. Only overheating is reported more often on this car.
Narrower sheets: Engine misfire (143 reports)
Tick what matches of 282 reports
Misfire 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, 2021, 2022, 2023, 2024, 2025, 2026.
What this problem usually is
These reports start with the check engine light. Many describe the engine running rough or shaking at idle, a P0300-series code, or a catalytic converter code. A worrying number say the light was flashing. Owners often list ignition coils or spark plugs already replaced, and the light coming back afterward.
What got replaced
Owners who name the part that was replaced mention the injectors (82 reports), the spark plugs (56 reports), the ignition coils (33 reports) and the sensor (8 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.
The fuel pump inside the fuel tank may fail.
A software error may cause intermittent or continuous disruptions in communication between the Body Control Module (BCM) and other components.
The low-pressure fuel pump inside the fuel tank may fail.
All 6 recalls on the 2018 Honda Accord, with the owner complaints on each recalled system
NHTSA investigations into the engine on the Accord
Ignition shift interlock. Closed oct 14, 2010, led to recall 10V-364.
Ignition park-shift interlock. Closed jan 5, 2009, led to recall 10V-364.
Ignition-park interlock. Closed feb 2, 2005, led to recall 05V-025.
Ignition-park interlock. Closed jan 13, 2005.
Ignition-park interlock. Closed dec 17, 2003, led to recall 03V-423.
Honda high engine speed. Closed may 4, 1987.
None of these investigations covers the 2018 model year.
What owners paid
78 of the 282 reports quote a price. Each dot is one quote. The middle half runs $1,600 to $6,000.
When it happens
The middle half of failures fell between 70,000 and 116,000 miles, from the 141 reports that gave a mileage.
Is this a known problem?
The manufacturer has sent NHTSA 9 service bulletins or notices for the 2018 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.
American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2019 Accord 1.5L with a customer complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected) stored.
Under certain circumstances, the vehicle may experience driveability concerns. This may result in the following DTCâs to set: ⢠P0300 (Random Misfire Detected), ⢠P0301 (No. 1 Cylinder Misfire Detected), ⢠P0302 (No. 2 Cylinder Misfire Detected), ⢠...
American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2021 Accord 1.5Ts with a customer complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected) or P0172 (Fuel System Too Rich) stored.
5 more on the 2018 Honda Accord page.
What owners wrote
“At 144000 miles all vehicle lights came on and vehicle engine would shake and vibrate. Computer said misfire on cylinder three. Changed spark plugs and coil. Problem still persisted. Mechanic recommended replacing fuel injectors so i did. After injectors were replaced all the lights came back on and the car runs worse. I believe its a blown head gasket now and the mechanic is testing the head this week.”
Filed Apr 19, 2026 · 144,000 miles
“100k miles on our Honda when there showed Misfire in cylinder 3 kept coming up. Changed the coils and spark plugs. The car lost power on the freeway almost resulting in a collision. Had the car towed to Honda dealership where they quoted us 4800$ for a head gasket. Honda knows what theyâve done. I will never in my life buy another Honda.”
Filed Oct 18, 2025 · 100,000 miles
“Getting engine lights with emission system problem. Cylinder one Misfires. Checked with service which said Only 49K miles and injectors are gone . Need to replace injectors. Honda will not provide injector unless we do repair form dealer. Waiting for months. Always on backorder They said its known issue . Already spend lot of money Not sure why its not on recall since lot of people with 2018 Accord having this issue”
Filed Apr 24, 2024 · 49,000 miles
“took my vehicle to honda for emissions check engine light, dealer troubleshoot and said i need my injectors replaced my vehicle has 74k miles”
Filed Mar 29, 2024 · 74,000 miles
Should you keep driving it?
This page can't tell you that. 0 of 282 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 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