I am having what seems to be the same types of problems. 2011 SLE2 with V6, FWD. I find that in the lower gears it appears to not want to shift, or else it will shift up, then jerk down, then jerk up again as I continue to press the gas steadily. And sometimes if I let up the gas (car in front slowing down) and then push it again, it just doesn't want to go and I have to ease up and push again maybe more than once. Often when I push the second time it shifts into what I call "passing" and then goes back. I have also found that sometimes if I make a left turn from a stop, and need to move into traffic, it just sits there and looks at me and I have to let up and hit it again. Really scary when you are trying to move into traffic and the person behind you is close! I took it in and complained about all of this, but was told after they kept it and a tech took it home at night, that I just needed to get used to the 6 speed. Of course they couldn't duplicate it and all the readings were fine. Well, it's now over 6 months and 7000 miles and it is getting worse. Last week I made my daily left turn into traffic and it kept grabbing and then slowing about 4 times before it finally grabbed for good. It is mainly in the lower 3 gears and I'm just not sure if it is all transmission or if there is some fuel injection problem in there as well. I will have to take it back but I bought it close to my work and last Friday I lost my job, so it is going to be a pain to deal with it. I spent a huge amount of time choosing this car and am getting rather frustrated with it. I also paid extra for the V6 because I didn't like the hesitation on the V4 and am still having to deal with it.
Starting to wonder if I shouldn't have just gone with the Santa Fe.......