All of our trucks and buggies are pretty good on road and off road. With use on sand though, we have used for hours on sand without any problems but if the worst came to the worst and sand managed to get in the engine it could damage it which the manufacturing warranty would not cover. We sell all the spares so you could repair it. People use on sand without any problem but it is a possibility which is why it's best to give it a good clean after use.