2019 Honda Accord Hybrid power train problems

“The vehicle has a documented, severe manufacturing defect involving a cylinder head gasket leak under Honda Service Bulletin 26-006. A certified technician at Honda East Cincinnati confirmed the head gasket leak in writing on September 9, 2026. Prior to this, an independent facility pulled code P0302 (Cylinder 2 Misfire) and used a digital borescope to capture video proof of liquid coolant pooling inside Cylinder #2. Despite written documentation from both facilities confirming an active internal engine leak, American Honda Corporate and the dealership are refusing to honor the warranty extension. They are requiring me to continue driving an unstable vehicle until it actively throws a code on a proprietary dealership scanner. Forcing a consumer to drive a vehicle with a known, documented internal coolant leak risks sudden engine seizure, overheating, and catastrophic stalling on public highways, creating a severe and preventable crash hazard.”

“City street driving speed < 35-40 mph, engine began rough idling at stop light after traveling just 1/8 mile. After driving less than 1 mile on level ground, engine slowed and would not accelerate above 20 mph. After another mile or so, increasing uphill grade caused speed to slow to 12-14 mph. Stepping on gas caused car to slow down even more, with shaking and jerky stop-start of vehicle. Maintaining 10-12 mph permitted vehicle to continue uphill climb for a few more miles so I could reach home. Downhill coasting was smooth with no gas pedal acceleration. Overnight parked in garage, and no problems driving vehicle to local independent auto mechanic. They were able to duplicate problem after 2 days and multiple test drives. Diagnosed permanent and temporary engine codes: misfires of cylinders 1 and 4 with ignition coil malfunction, misfires of cylinders 1, 2, 4, and random misfires. Also permanent codes: antilock brake ECM Failure, electric power steering vehicle stability assist System Malfunction, electric servo brake electric power train System Malfunction. Mechanic removed coils and spark plugs, found cylinder 4 has moisture. Coils, plugs cleaned and…”

“While driving ~40 mph call all of a sudden lost power in middle of busy street, was not able to steer or drive (pedals weren't working to provide power). I pulled off to side and saw check engine light blinking and warning message pop up about Brake system not working. I turned the car off then turned it back on and worked normally and was able to drive home.”

“Emission system control error please see your dealer do not accelerate at high speeds, ACC control, module error, brake system failure, error, lane control, assistance, failure, numerous lights illuminate on dashboard 7 to 10 error codes all at once. Vehicle was taken to Diagnosed and found turbo Charger for engine acceleration was faulty, spark plugs changed, 4 coils and cam shift sensors2 total. Over $3000 later, the vehicle is still doing the same mention above, including when stopped and acceleration at slow or high speeds vehicle jerks. Only 158,000 miles on a 2019 all fluids have been serviced and changed on time with no leaks.”

“All the lights came on on the car, took it to get looked at they stated it was the turbocharger I spent $2500 to get it replaced and yet all the lights are still on-automatic headlights don’t work and the infotainment system keeps cutting out-like glitching. According to the Honda representative at the dealership, this year model has had alot of issues and several cars in the last month alone have replaced turbochargers and had to come back and get an entire motor! This is highway robbery if the cars themselves weren’t put together correctly from the manufacturer. This needs to be looked into as I’m having to shell out thousands of dollars for a defective car. My [XXX] drives this vehicle and I don’t know what to do as the dealership charges $190 for every diagnostic test and to not have an answer is frustrating. All I’m hearing is several cars this year are horribly made. This needs to be investigated and resolved. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6”

“I was driving on the freeway and my engine lost power and all the lights on my dashboard went haywire. I tried to get off the freeway but with the loss of power made it extremely difficult and dangerous. I thought I was going to get into an accident since my car slowed down so abruptly. I had to limp my way across traffic which was very scary. The car was jerking and shaking. I finally got to the side of the freeway and the car did not want to continue so I called for a tow truck and waited on the side of a busy highway. The tow truck brought my car to the Honda dealership which diagnosed the problem immediately as a blown head gasket. They said it was a known problem and the mechanic knew what to look for. They fixed the head gasket and I have my car back. My car only has 92k miles and I don’t think the head gasket should fail this early in the vehicles life. I properly maintain my engine with routine oil changes. There is no reason the engine should break down like this. I feel that there is a defect in Honda’s head gasket.”