When driving my van to work in the morning, I would get an alert on my screen that says to check the driver assistance system. Then I turned on to the freeway on ramp and my car lost all power, not letting me drive faster than 30 mph. I was able to get off of the freeway and on to a side street when another alert, accompanied by loud beeps, came on saying -??Check Hybrid System. Stop safely.-?? I was able to pull to the side of the road and turn the car off. When I turned it back on it seemed everything was fine. I took it to the dealership and they couldn-??t replicate the problems and the car didn-??t register any errors. So they returned it to me. This morning I drove to work and the exact same thing happened at the exact same place. Only this time I wasn-??t able to get over as quickly and my car shut down in the middle of an intersection. Luckily I was able to coast to the side of the road. The dealership is still saying they can-??t fix what they don-??t know is wrong. Which I get, but it-??s weird that these major events aren-??t being recorded by the car. And it is terrifying to suddenly lose power on the freeway.

- Layton, UT, USA

Temperature was 28 degrees outside. Car had 4500 miles on it. Car warmed up for 10 minutes before driving. At the one mile mark, it locked up at 31 mph and 1.4 rpm. It would not accelerate and it maintained the speed and rpm without pressing on the gas. The brakes did work. It lasted for another mile and then resolved. No indicator lights came on. The car did. It recognize there was a problem. It has not been replicated. It is available to be inspected. Not being able to accelerate above 31mph poses significant risk to both my family and other drivers.

- Huntsville, AL, USA

Car would not accelerate past 30 or 31 MPH no matter how hard gas pedal was engaged. The RPMs increase, acknowledging the gas, but the speed stays the same. Stopping the vehicle and putting in park doesn-??t fix it. This is particularly dangerous when going from city street to highway or interstate driving. It eventually self-corrects after about 5 minutes. We-??ve experienced multiple instances now, and all have been in cold weather (<10? F).

- Lincoln, NE, USA

I'm not sure which component caused the issue, but this happened a couple of times already, when I stepped on the accelerator pedal, but the vehicle didn't response at all. The first time, when I was turning into a parking lot, I had to let off the gas pedal, and try it again. The second time this happened was very scary, I was trying to get on to the main road, but I was coming up from a steep hill side road, and I saw a car was coming, but I should have enough/time distance to get on the road, but after the initial acceleration, the car moved forward, but when I applied more power, but it wouldn't move at all! Luckily the oncoming car slowered down and let me go, I was on the opposite lane (incoming traffic), and luckily no car was coming my way. This is 100% safety issue!!!

- Aloha, OR, USA

My wife and I have a 2025 Carnival SX Prestige Hybrid. We live in northern Maryland (lots of cold days lately!). This exact issue has happened three times and counting. While driving, our car will randomly lose all ability to accelerate. You can press the gas pedal all the way to the floor, and it will not gain speed. It seems to happen at lower speeds, around 30mph and it just caps off and will not accelerate and lose all power. The only thing that fixes the issue is literally pulling over and restarting the car, and then it drives fine. We took it into the dealer after the second incident and they claimed that a camera was just obstructed by ice, so the car probably thought it detected something in front of us so it stopped accelerating as a safety feature. To that, I said -??but if the car thought there was something in front of us, it would have applied emergency braking, not just simply stopping any acceleration-??-?? to which they replied -??yeah I don-??t know. Cars these days are just a giant rolling computer-??. The dealer just could not replicate the issue, so they had no way of really seeing or diagnosing it, which I understand but still frustrating. They said they drove it 3 times but it didn-??t happen. But again, it happens randomly (though cold weather seems to be a common factor). So we left and said okay, they tried, they cleared off the camera, let-??s see what happens. One week later (this morning) happened again. Taking into the dealer this evening. We have a Case open with the Kia Customer Care -??Escalations-?? team. But they-??ve been no help.

- Whiteford, MD, USA

On a day which had a high temperature of 16F our Kia Carnival Hybrid SXP, after not being used most of the day, when driving would not exceed 31 miles per hour. The engine would not rev loudly or give any indication of an error but would not go over 31 mph even with the gas pedal fully depressed. After pulling over and turning the car off and on the problem did not repeat.

- Ashburn, VA, USA

I'm getting an alert in the car app that says low battery and will not perform any lock/unlock/start, etc features. It says the battery level is under 40%.

- Burke, VA, USA

Started about a couple weeks ago. Just bought my car and my battery drained 3 nights in a row. Had to jump start it Found out some fan run, when car is off, hours after it has been parked.

- Mapleton, UT, USA

After a week of owning the car the battery died over night. Was jumped by roadside and died later that day and jumped again. After the 2nd jump, the AC and air bags didn-??t work. Then the check engine light came on. Kia has had my brand new carnival since July 26 with no fix.

- Montpelier, VA, USA