we are looking at buying a 2014 Santa Fe but after driving them 3 times - I'm still noticing this hesitation or something as I accelerate and slow down. I kept thinking I was imagining things but it doesn't seem like they are running smoothly. can anyone relate or explain why this car seems so different than other cars I've been test driving??? I love the look and the options and the interior but this might be a deal breaker from purchasing it if I can't get it explained.