2018 HONDA ACCORD Complaints

I own a 2018 Honda Accord and have been experiencing an ongoing issue where multiple warning lights appear on the dashboard at the same time. The lights include several safety and system warnings, making it look like many different systems in the vehicle are malfunctioning simultaneously. I have taken the vehicle to be serviced and attempted to fix the issues that were identified. However, even after repairs were made, the dashboard warning lights continue to stay on or return shortly after. It has become frustrating because the vehicle continues to show problems even when something has already been repaired. This situation makes it difficult to know whether there is a real safety issue occurring with the car or if the warning system itself is malfunctioning. Having so many warning lights on at once also creates concern about the reliability and safety of the vehicle, especially since several of the warnings relate to important systems such as braking, driver assistance features, and engine performance. After researching the issue, I discovered that many other owners of the 2018 Honda Accord have reported experiencing the same problem with multiple dashboard warnings appearing at once. Because this appears to be a widespread issue, I am submitting this complaint so it can be documented and investigated further. I believe there may be an underlying defect causing these repeated warning lights despite repairs being made.

I was driving and all the lights on the dash board came on. Including the engine light. I took the vehicle to the dealership service center and they said the turbo function of my engine was failing. and it was still covered under warranty so they fixed that. One day after the picking it up all the lights came back on. I took it back and they stated that the fuel injectors are failing thus causing engine misfires resulting in the engine light coming back on and the car randomly stalling or slowing. They indicated that the fuel injectors are NOT covered and repairs are around 2,400.00, I believe this should be covered because there was a previous recall on the fuel on the fuel pump (which is connected to the injectors). Also I don't understand how the "turbo" was still covered under warranty but the injectors are not. Upon doing my research this is a known problem on this make and model and Honda should correct the known defect.

Head Gasket caused multiple issues with coolant burning quickly. Multiple ignition coils also got damaged and had to be replaced. Though the underlying issue with the gasket was not addressed by the dealership. The head gasket is currently broken and does not function at all and the car has only driven 84000 miles.

Head Gasket Failure at 121,000. It has also affected the spark plugs. We were quoted a $4300+ repair at the Honda Dealership in Carlsbad. Engine displayed all lights and went on power loss mode and suddenly couldn't go more than 5-10 MPH, so we had to tow it. Was dangerous getting such a slow car into a parking lot safely.

A 2018 Honda Accord suddenly displayed multiple dashboard warning messages at the same time after previously operating normally. The warnings include: Emission System Problem (avoid heavy acceleration), Tire Pressure Monitoring System (TPMS) problem, Brake System problem, Brake Hold System problem, Electric Power Steering system problem, Vehicle Stability Assist problem, Hill Start Assist problem, Adaptive Cruise Control system problem, Collision Mitigation Braking System problem, and Road Departure Mitigation System problem. These alerts appeared simultaneously when the vehicle was started, even though the car had been driven the night before without any issues. The vehicle still starts and runs, but the number of system warnings suggests a possible electrical, sensor, or control module issue affecting multiple vehicle systems.

There are many warming lamps on in the car. My car won't pick up speed it in limp mode once I crank up. I have to turn it off and restart any order for it to go and pick up speed. My number 3 plug keep showing something wrong it has been replaced multiple times but still having the same issue. I had it checked out it's saying the same problem fuel. I have had my fuel pump change and still having problems. 2018 are bad models for honda and there should be multiple recalls because everyone having the same problems. Head gaskets,fuel injection, turbo problems as well as fuel pump

All dash lights are on and the Honda dealership told me I have a blown head gasket, need a turbo replacement & fuel pump in which I wasn’t able to drive the car for 7 months at 112,276 miles..This seems like a known issue for this make and model vehicle after 100,000 miles

On February 26, 2025 I was driving my 2018 Honda Accord Sport (118,000 miles) with a 1.5t engine on a 55mph 2 lane roadway at approximately 55mph with 4-5 cars behind me when the engine suddenly went into "limp" mode and quickly decelerated to approximately 25 mph. I could see the cars behind me suddenly brake to avoid hitting me. I pull off on the shoulder, turned my car off and restarted. The car then drove normally to home. I took the car to the Honda dealer who diagnosed a blown head gasket. The sudden deceleration was caused by a misfire due to coolant entering the combustion chamber during the combustion cycle. The sudden deceleration almost caused an accident. When this happens the Accord does not warn the drivers behind with brake lights or flashers. I had the head gasket replaced at a cost of $4000+ The dealer's mechanic believes the cause is improper head bolt torque specs at the factory. Honda is aware of the a head gasket problem with the 2018-2020 Accord 1.5t engine, see Honda's NHTSA filings attached offering visa cards to mechanics who report head gasket failures, yet refuses to recall the engine or pay for replacing the head gasket unless under warranty. This is my 4th Accord (1985, 1986, 2007, 2018). I have never had any engine problems with my other three Accords. Honda needs to recall this engine and correct the head gasket problem so as to avoid unannounced, uncontrolled, and unintended deceleration at highway speeds due to going into limp mode (70-75 mph on interstates down to 25 mph) that can cause following cars to crash into the Accord. I purchased the car with 22,000 miles on the odometer and performed regular maintenance since I purchased it. See comments beginning on page 2: https://www.driveaccord.net/threads/blown-head-gasket-any-recall.559243/?post_id=6844792#post-6844792

My Honda is shifting harsh going into 5th gear and sometimes reverse is not available. I have taken the vehicle to the dealership and they are telling me I need a new transmission to the tune of $9,600. It only has 64,000 miles and the warranty recently expired. I took the car to another mechanic and he told me the same thing. There is no way that the transmission should go out at such low miles. Honda needs to step up and take care of this problem. There are many complaints about this issue but nothing is being done. I have the 7 year/100,00 mile warrany but the car is a 2018. This was the first year of the 10-speed transmission and many people are having problems. This needs to be addressed.

Wastegate actuator is no longer working and turbo on vehicle is no longer working as needed. My car currently has every warning light on the dashboard and fails to provide all advanced driver assistance systems that come with my vehicle making it unsafe. The problem has been addressed by Honda dealership service themselves as my code came back that it is a turbocharger wastegate sensor issue. Car has not been inspected by a manufacturer, police, insurance. All warning lights went off on car over two years ago from 2026.