very well built and heavy duty construction. lots of power and very easy to use. I am happy with the speed and it has no problem going up hills while fully loaded. The only concern I have is the quality of the electronic components. I feel the controls and wiring are not up to the same standards of the mechanical components. Everything is working well now, but I am expecting to replace many of the controls as they fail over time. The battery switch cover has already fallen off and the power switch is very loose in the panel. The components should be easy to replace but I feel they could have been a little better quality from the start.