 2016 Tucson had 41,000 recalls due to transmission issues. It was a software fix. I took my 2017 sport in to dealer a few times (dealer very helpful) for slow or no acceleration & rattling sound in engine. They determined new transmission was needed (@5,500 mi). I have a loner provided by dealer. I hope the new trany solves issues? I like my car, very pleased in general. Fingers crossed.1 year later: I really like the tucson sport. But I am still having on going issues such as: unreliable acceleration, engine makes a WHIRRING sound. I have 11,000 miles now and would not drive a long distance, as I feel car is unreliable.