2026 Kia Carnival

The car will not accelerate past 31 mph no matter the gas petal position, during cold mornings. Downhill or uphill, in any “drive mode” it will not go past 31 with the petal all the way down. Acceleration onto a highway is impossible. Stopping and restarting the entire vehicle seems to reset this and allow for speed over 31mph. This has happened 5-6 separate times when the temperature is below 35F.

System failure the warning lights on dash went crazy all of them flashing Speedometer wouldn’t work, lights won’t work, camera system won’t work, abs won’t work, tailgate won’t open, side doors won’t open, heat/ac controls stop working , windshield wipers stop working. They had 20 error codes the first time this happened Yes vehicle has been in shop 2 different times This happened the first time on November 24 shop had my car until November 28. Drove car for 9 days took car back in on dec 8 shop has had it still do not have as of 12-18-25 They have said the first time they had no idea what was wrong with it but got it to stop doing it. On dec 8 it started doing the same thing. I brought it back and they at first couldn’t get it to stop. From my understanding it has stopped and tests are coming back good but that is what I was told the first time. They are trying to get it to do it again by driving it before Kia motors will allow them to release it to me. I am getting no where with Kia motors, they are not calling me to let me know what they are going to do for me. I feel this vehicle is unsafe there is no garintee this won’t happen again while I am driving. All I want is out of this lease. 9 days and brought it back in for same issue. I was driving when all of this took place

On Dec 12th the speedometer repeatedly showed very incorrect values, both displaying much faster than the vehicle was traveling and displaying zero when the vehicle had accelerated. We have not been able to replicate the issue. And it went away after shutting down and restarting the vehicle. The vehicle has not yet been inspected by anyone. From a safety perspective the speedometer accuracy is in question. Prior to this incident the screens had all shut themselves off. After the incidents the main screen (with the speedometer) rebooted itself a few times while driving. We have video of the speedometer acting incorrectly but unable to upload the correct format. See included screenshot while driving about 30mph with the speedometer showing zero.