Since day one of ownership, it has a vibration in the steering when approaching 25mph then the vibration continues all the way to 75mph. also at approx. 25mph an low humming sound starts. the humming sound gets loader as speed increases along with the road noise. the humming and vibration stop as soon as you take your foot off the accelerator. but resumes again as soon as the accelerator is pressed. this vibration feels as if a wheel is loose or coming off or the the engine and transmission are going to fail causing a serious problem. this by no means is normal. both dealerships personnel that drove the vehical said its not normal.