Driving on the interstate, had to apply brakes hard, then had to pump the excellerator and then floore it to get gas to engine to resume momentum. After that it does it does this intermediately, maybe for quite awhile the same day and not again for weeks. The check engine light does not come on and there are times that the RPM's have jumped up to 4 and almost 5, the engine sounds like a race car and little movement and then quickly lunges forward, at other sounds like it has shifted and you still have not increased in speed. The dealership kept this vechile over a week and they had no problems. Another date it was doing this was on an exit ramp from the interstate in creeping, stop and go traffic. Taken straight to dealership from there acting up all the way. Vechile was not shut off when rep from service department went as passenger there were no problems.

- Dade City, FL, USA