Its like a shake and/or vibration. I aprreciate everyones input. I do lawncare and I have a baby on the way so I need somethin that dependable for work foremost, dependable for my baby to ride in. I don't wanna be broke down on the side of the road in August with no A/C and a 2 month old in the back. The dealer bought this from a business that sold trailers and golf carts. The business went out of business, so He picked it up from them.