Yeah, the Fusion hangs somewhere when accelerating. I haven't counted to see which gear it actually is, but I think the transmission has 6 speeds. I attributed the behavior to the fact that I generally accelerate gradually from a stop rather than just flooring it the way many seem to do. Never thought of nudging it by pressing the up button on the gear lever, but that might work. Giving it a little more gas works too.

A couple of days ago I backed out of a parking space and absent mindedly shifted to "first" which was actually "park" and then got worried when the engine raced but went nowhere. The truth did dawn quickly. But during the first week I had the car, it did the same thing while in gear. Suddenly the engine seemed unconnected to the wheels. Called the dealer, they sent a tow truck. Some electronic module involved in the acceleration process had failed. They fixed it, no charge. Which was nice because the part plus labor would have been $450 US.