2020 Toyota Corolla owner complaints

I have only had the car for a year and a half, and I have already had to replace the battery which was less than 2 years old, all 4 tires (2 at 40000 miles and 2 at 48000), and now the engine wiring harness somehow got severed and has to be replaced which is almost $6k repair!

Will driving the car decelerated and would not go pass 20mph. Break,engine,ect. Lights turned on. The car has only 1345 miles. So far it has happened twice. Second time going to the dealership.

Clutch Slave Cylinder at 51,000 miles failed causing vehicle clutch to not return and loss of fluid. Brake fluid and clutch fluid are used in the same reservoir and could cause issues causing vehicle to not be able to stop. Vehicle has been inspected by shop and has been replicated. The part exploded and leaks fluid inside of transmission housing. This also causes the clutch to fail as-well. Vehicle has always been serviced and maintained and this is a common issue with all vehicles that have 6 speed manual transmission with varying mileage. It is not a matter of if, it’s when and due to this being something that happens with generally no warning signs can be dangerous. There needs to be an updated part that can handle the design Toyota chose for this transmission.

1. First problem I had with my 2020 Toyota Corolla Hatchback SE: SAFETY RECALL 20TA07 (Backup LampsMay Become Inoperative) - 10.29.2020 2. Second problem was with the software draining the battery way too rapidly, which made me unable to start my car. I had to have a tow truck come by and he was able to recharge the battery (he knew to do that with my car instead of towing it away, because he was seeing this type of issue with this type of car a lot). I took it to my local toyota dealership and had them inspect it. They told me that they need to update the software of the vehicle and that I should not be having this problem again after. *EL1934 FIRMWARE UPDATE (5.21.2021)* 3. Third problem I had was with the temperature gauge. The needle pointer in the dash did not go up and stay in the

Faulty hydraulics in the transmission system. Faulty slave cylinder leaking fluid and potentially causing vehicle to become "stuck" in gear while driving or unable to shift into gear while parked. Not an uncommon issue with these models.

Beginning on April 18, 2025, my 2020 Toyota Corolla LE began experiencing repeated failures involving multiple safety systems while driving. Without warning, several lights illuminate at the same time, including: Brake System Malfunction, Pre-Collision System, Parking Brake System, Vehicle Stability Control, Check Engine, and Secondary Collision Brake System. These warnings appear suddenly during normal driving, then sometimes disappear, then return again unpredictably. These failures disable several integrated safety systems and create a serious safety risk due to changes in braking performance, loss of stability control, and disabled collision-avoidance functions. Diagnostic scans from both the dealership and an independent mechanic repeatedly show: P1578 — Brake System Malfunction P

There was a maintenance required notice on my dashboard and I searched up that it was my coolant bypass valve having an issue. Apparently it’s a defective part in Toyota Corolla and rav4 models from 2019-2023 I believe. The notice would come on and off each time I would start the vehicle. The dealership has confirmed this issue is common and after having it inspected and diagnosed, it was indeed the coolant bypass valve. My safety and the safety of others were fine, my engine would’ve been the unfortunate casualty if I did not take care of this.

Engine abnormal shift downward while driving regularly. I feel the shift is not smooth even feels like a defect in the engine shift system 17,000 miles mostly happens regularly driving on city streets and a bit less happens on the parkway but does happen. The shifts are hard to ignore I remember the very time I felt it on 10,000 miles and it would able occasionally and now it's happening even more frequently than I can possibly say this is an ongoing defect and growing to be a problem even more so.

Coolant bypass valve failure. Replacement part carried the same defect.

The vehicle flashes ‘connected device is not compatible’ with the ‘SOS button flashing continuously red then green.’ This message causes the microphone to remove 1 to 3 seconds of sound every 5 to 15 seconds making a clicking noise when speaking on vehicles Bluetooth. This is typically corrected by a DCM reset and firmware update. Not only is this incredibly inconvenient during normal conversation but having to repeat random portions of the conversation is irritating at best. Recently I had to make a 911 call and had to repeat myself several times to request emergency services. This glitch caused the emergency 30 second call to be extended roughly 1 1/2 to 3 minutes delaying response time. If the clicking occurs while the other person is speaking this is not noticeable. This is an identifi

I am experiencing a recurring issue with the Data Communication Module (DCM) in my 2020 Toyota Corolla. This component was previously subject to a recall, which I addressed at a dealership. However, the problem persists, and many other Toyota owners, including those with RAV4 models, are reporting similar issues. Discussions on forums such as Toyota Nation and Toyota Owners Club highlight these ongoing concerns. My vehicle is out of warranty, and replacing the DCM is estimated to cost over $800. I have confirmed that the issue lies with the DCM system, as removing the corresponding fuse eliminates the error message on the multimedia system. However, this circuit also powers the right speaker and microphone, making it impractical to simply disconnect the module. The local dealership has qu

While driving my car it turned off and it was hard for me to turn and all my lights was hard to steer and all the lights on the dash board turned on and they was not turning off and I got in. A wreck by me not being able to turn and hit a bush and my car got total

Was on a head on collision the air bags failed to open no breaks or indication that the breaks were failing.once the vehicle was in the shop shortly after the battery exploded sed .now the care is totally for all the frond end damage and the cost of the batter would be ten thousand dollars.I was driving interstate 15 in riverside california rear end the car in front.

Unknown, I can send photos. it comes with new Toyota Description of Complaint Please provide a narrative which describes the problem(s) or concern(s) you are having with your vehicle. Toyota put a cheaper, lower quality tires for my car, it damaged my front bumper when we go curve roadon CA state. I asked Toyota for warranty bumper 2020, they said "you made it". After I replace the badtires with Costco tires, no more bumper issue as before, so I know the reason. I , Costco tire service made3 parties to Tire Inc Yokohama. Yokohama agreed to refund, but need go with Toyota, Toyota rejected.First tire was down March 16, 2020 with 797 miles, the second down June 22, 2020 with 1608 miles, thirdtires down Dec 17, 2020 with just 2745 miles and 4th tire down 12225 miles on April 14, 2023.Specific

On first day of purchase when I came out of my driveway left fender popped out .I took it to the dealer they pushed the fender back in. The next day fender popped out again and I returned the car to the dealer for being unsafe to be driving. Dealer tooked tha car back but kept my $2772.84. This car is a poorly built unsafe junk.

I have a manufacturer defect on my car. The piece of the car's body which goes around the tire and connects to the bumper does not connect right because there is not connector on the bottom of this piece, like there is on the rest of this piece. It often comes lose and it separates, which is very scary when I get out of my car and see that I have a piece of my cars' body separated from the body of the car. I'm scared when I take the freeway or bit a bump on the road. Please help me with this problem. Respectfully, [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

The steering makes a thumping noise. The car also veers off to the left or right while driving. I had a front-end alignment performed by the dealer. It still does the same thing. I did take it to the Dealer, twice and they claimed there was no issue. I've never heard a thumping noise in any other car that I've owned. I have not had an accident but there is something going on with the steering of the car. I'm not sure if the steering column was broken or attempted to be stolen. There are scratches around the ignition switch that were there when I bought the car.

RE: Front bumper issue Toyota case The car comes with a front bumper that is not good for CA road conditions When I purchased the new car, and tried to leave the dealership, its front bumper came off slightly, a man stopped me and told me, I asked the selling man, who put it back and told me "its design for easy way, you can put back.". I also showed him there is no tight lock, both sides missed two locks too, the selling man said that is the way. About 200 miles, this happened again, I put it back. It happened again and again. Finally I felt this is not right. I contacted Toyota for warranty service 2021. Toyota sent me to a dealership. They did not have any body shop, but a service dept. He put it back for me, and said "you got a scratch that made it". The CA driveway always have cur