Hesitation? Help. . .

[Monteballz]

My Fiance just picked up and 06 H3 with 16,000 miles on it. I've noticed when i'm driving it that something's up. At around 50-60mph, just cruisin, motor is at around 1500, 2000 rpm's. that there's a feeling of hesitation. I dont know if its the motor or drivetrain but somethings up. especially when I start to hit a slight incline or a hill its almost a herky jerky feeling. Anybody else experience this? If i give it more gas and it downshifts the feeling goe's away. I'm going to be calling the dealer and taking it in soon, (under warranty) but I thought i'd try here for some help/advice first. Thanks!

-Mike