Vibration at speeds of 64/65mph and up. Not sure if driveshaft or transmission. Hyundai has issued a tsb but will not honor it. I have asked 2X for dealer service dept. To evaluate this problem. They said they do not have to honor this tsb. I have seen on forums others are having same problem with cars made in December 2019. It is painful to drive on the highway and I do not know if it is the driveshaft, will it break" will the transmission fail" this is a brand new car purchased new and it is unsafe to drive on the highway and I cannot get Hyundai to look at the problem and they have sent emails saying tough luck. This is anytime you are driving on interstates or highways with speed limits of 70mph..at around 64/65 car steering wheel, seat, floor vibrates unless you go below 63mph. Happens every time. First time was driving home from dealer on highway--been reaching out to Hyundai usa since July been to dealer in July, August...but always told appointment will be two weeks to 6 weeks away.

- Bethel Park, PA, USA

I bought the car in Jan 2020, and found that it was leaking oil on June 2020, after 4500 miles. The oil leak looks to be significant as I had found drops and puddles on my garage floor. The oil leak seems to be coming from the transmission/engine connection area, or possibly the upper oil pan. The car is currently still in dealer service for repair.

- Columbus, OH, USA