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2020 Honda Accord Transmission Problems

12 owner-reported transmission complaints from NHTSA data

12
Complaints
Jan 2026Dec 2025
Date Range

Data sourced from NHTSA public database. For informational purposes only. Always consult a qualified mechanic.

Owner Complaints (12)

criticalPOWER TRAIN,SERVICE BRAKES,FUEL/PROPULSION SYSTEM
Filed: Jan 2026

While driving at 30 mph, your brakes suddenly lost power and multiple warning lights appeared on the dashboard, followed by a loss of acceleration. When you tried to brake again, the pedal didn't respond, and you had to drift to a stop in traffic. Restarting the engine restored normal braking and acceleration. You've also been experiencing persistent false low tire pressure warnings since purchase. The repair will likely involve diagnostic testing of the brake system, fuel system, and tire pressure monitoring system to identify the underlying electrical or mechanical failure.

NHTSA #: 11710278
highPOWER TRAIN
Filed: Mar 2026

After a routine drive, multiple warning lights appeared on your dashboard including TPMS, brake system, road departure, and emissions warnings. Your dealer diagnosed a failing head gasket, third cylinder misfire, and coolant leak requiring approximately $5,000 in repairs at just 108,000 miles despite regular maintenance. This repair involves removing and replacing the head gasket, addressing the cylinder misfire, and sealing the coolant leak.

NHTSA #: 11723416
highPOWER TRAIN,ENGINE
Filed: Mar 2026

Your turbocharger and fuel pump have malfunctioned, causing your car to suddenly slow down while driving on the interstate. The engine warning light came on, and all system warning messages appeared on your dashboard. A dealer confirmed the problem, and Honda is aware that there's a recall for this issue affecting your model year, though your specific vehicle identification number isn't included. Repairs will likely involve replacing or servicing the turbocharger and fuel pump.

NHTSA #: 11723444
mediumPOWER TRAIN
Filed: Jan 2026

Complete loss of power on acceleration. Car goes limp while driving on highway or a 50 mph street - very dangerous to have loss of power when other cars are driving fast too. We have replaced the spark plugs, coils, and fuel injectors. That was a waste of time and money bc the same problem existing- loss of power again! Turns out, it’s bc the Head gasket has a design flaw - deep grooves between the cylinder heads and head bolts that are not strong or tight enough. I have lost all trust for Honda bc this has not been issued as a recall. After quick online research- Everyone is having the same issue who has these models, this needs to be a safety recall bc Honda created a faulty head gasket design. This car is not safe bc the head gasket design, and I’m making payments on a car that I can’t even drive. Unethical for Honda to not take accountability for this! I’m driving my 03 Toyota that has over 300k miles is more reliable than this 2020 Honda - paying for a car I can’t drive makes me despise Honda for not issuing this recall.

NHTSA #: 11708597
mediumPOWER TRAIN,FUEL/PROPULSION SYSTEM,FORWARD COLLISION AVOIDANCE
Filed: Dec 2025

While driving my 2020 Honda Accord Hybrid, VIN [XXX] , the car would start exhibiting rough engine feels, and all of the dashboard lights would come on. The car would lose power at highway speeds, and I’d have to pull over to turn the car off and on. When checking on OBDII meter, getting P0301 codes. I have replaced the coils and plugs twice and still not better. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA #: 11705486
mediumPOWER TRAIN
Filed: Jul 2025

Driving on I70 mm152.2 my transmission went out and I was left quickly slowing on the interstate. I was in left line and cars were passing on the right. I needed to get over because I could not pull over to the left. Thought I might get stuck stopped on the interstate but was able to get over safely. Car only had 88000 miles on it and was less than 5 years old

NHTSA #: 11674208
mediumPOWER TRAIN,ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM
Filed: Apr 2025

Starting sconce July the car will vibrate at random times and will hesitate and buck while car will vibrate and not want to move have brought the car back to the dealership over 4 times now and they can not find any issues despite me having videos and any information I can gather since July if 2024

NHTSA #: 11655665
mediumPOWER TRAIN,UNKNOWN OR OTHER
Filed: Nov 2024

The vehicle's transmission stalls when trying to accelerate, causing unnecessary RPM fluctuations. While going downhill with the brakes applied, the RPM gauge spikes pass 4000 RPM causing the car to accelerate rather than slow down. when this occurs, extra pressure has to be applied onto the breaks to slow vehicle down. If enough space isn't given to the car Infront, pressing the break will cause a crash. Accelerating too fast on the highway will cause blown head gasket if transmission is stalling. This seems like a common issue with 1.5L engine & Honda's CVT transmission as other owners has been through similar issue & proven by independent service center. I've taken the vehicle to different dealer for inspection. only recommendation is transmission fluid change. Dealers refuse to do anything regarding the actual issue at hand.

NHTSA #: 11624566
mediumPOWER TRAIN
Filed: Aug 2024

CVT belt prematurely broke causing transmission failure on 2020 honda accord. Car has 93000 mile.

NHTSA #: 11609220
mediumPOWER TRAIN,ENGINE
Filed: Oct 2020

FROM OCT 10 TO OCT 14, I PARKED MY CAR AT OFF AIRPORT PARKING LOT FOR 5DAYS. WHEN I CAME BACK, MY CAR DIDN'T START. MY CAR WAS TOWED TO THE CLOSEST HONDA DEALERSHIP. I GOT THE INSPECTION REPORT FROM THE DEALERSHIP STATING THAT THE REASON WHY MY CAR DIDN'T START IS DUE TO BAD GAS. I WENT TO THE GAS STATION, WHERE I PUMPED MY GAS LAST TIME BEFORE I FLEW OUT OF ATL, TO CHECK WITH THEM. THEY PROVIDED ME A COPY OF THE SYSTEM STATUS REPORT OF 10/9/20 SHOWING THAT THERE WERE NO ISSUES. SO I WENT BACK TO THE DEALERSHIP AND THEY TOLD ME THEY HAVE CONFIRMED THAT #3 CYLINDER IS FULL OF WATER; THEY SAID THEY COULD GET A FUEL SAMPLE ONCE I AUTHORIZED THEM TO WORK ON THE FUEL TANK REMOVAL AND CLEANING. ONCE THEY PROCEEDED, THEY STATED THEY FOCUSED ON CLEANING THE SPARK PLUGS AND PERFORMING AN OIL CHANGE WHICH LED THEM TO FIND OUT THERE IS INTERNAL DAMAGE TO THE ENGINE. SO THEY TOLD ME THEY WOULD STOP UNTIL MY INSURANCE COMPANY CHECKS THE CAR. THEY SAID THEY TOOK MULTIPLE FUEL SAMPLES AND DID NOT SEE WATER BUT THERE WAS WATER FILLED IN THE ENGINE CYLINDERS. THEY HAVE ASKED ME IF THE CAR WAS IN A FLOOD, BUT THERE WAS NO MASSIVE RAIN OR STORM WHICH FLOODED THE AREA. THEY EMPHASIZED THAT IT IS NOT A WARRANTABLE REPAIR AS IT IS NOT A PROBLEM CAUSED BY THE MANUFACTURER, WHICH SOUNDED QUESTIONING. THE TECHNICIAN TOLD ME IF THERE IS NOTHING WRONG WITH THE OIL AND FUEL TANK, THEN THE ONLY WAY THAT WATER CAN GET INTO THE ENGINE IS MANUALLY POURING LOTS OF WATER THROUGH AIR INTAKE, WHICH ALSO SOUNDS RIDICULOUS AS I HAVE NEVER TOUCHED IT NOR THERE WAS NO TRACE OF SOMEONE TRYING TO OPEN MY HOOD FROM INSIDE AND PUTTING WATER. AFTER I EXPLAINED TO THEM, THEY SAID THEY STILL CANNOT PROVIDE AN ANSWER AS TO WHY THERE IS WATER, BUT IT CANNOT BE WARRANTABLE REPAIR. IF THEY DO NOT KNOW THE CLEAR CAUSE OF THE ISSUES, HOW CAN THEY STRONGLY CONFIRM IT IS NOT DUE TO MANUFACTURER ISSUES?

NHTSA #: 11372484
mediumPOWER TRAIN,UNKNOWN OR OTHER
Filed: Jul 2020

THE CAR WAS IN MOTION ON THE HIGHWAY WHEN ALL OF A SUDDEN THE CHECK ENGINE LIGHT CAME ON AND IT STOPPED ACCELERATING. I PULLED OVER AND COULD NOT GET THE CAR TO ACCELERATE MORE THAN A COUPLE MPH.

NHTSA #: 11340086
mediumPOWER TRAIN
Filed: Jan 2020

WE RECENTLY PURCHASED A 2020 HONDA ACCORD EX. WE HAVE DRIVEN IT ABOUT 3200 MILES IN THE 3 MONTHS WE OWNED IT. DURING THAT TIME IT HAS SHIFTED FROM DRIVE TO NEUTRAL 3 TIMES WHEN MY WIFE, WHILE DRIVING FORWARD AT NORMAL SPEEDS, LIGHTLY BRUSHED THE SHIFTER WHILE ADJUSTING A CONTROL ON THE DASH OR ON THE STEERING WHEEL. THE THIRD TIME SHE ATTEMPTED TO QUICKLY SHIFT BACK TO DRIVE AND BECAUSE THE LOCK IS ON THE FRONT SIDE OF THE SHIFT KNOB IT WAS DEPRESSED AND SHE WENT PAST DRIVE INTO SUPER (LOW GEAR); THE LOWER GEAR SLOWED THE CAR VERY ABRUPTLY (AND, OF COURSE DID SO WITHOUT ACTIVATING THE BRAKE LIGHTS) AND SHE WAS NEARLY REAR ENDED. THIS IS A VERY DANGEROUS SITUATION AND WE ARE CONSIDERING SELLING THE VEHICLE.

NHTSA #: 11299486

Other 2020 Honda Accord Issues