For an extremely well built machine! Ok, heres the story. Iv'e got the z-max out yesterday just another day until I get to my least favorite property. There is a small "bunny trail" that is a hill with a 3-4 foot drop and then its all down hill from there. I have to run across with the machine to get from the front of the property to the back. I've done it hundreds of times. This time the trail was cut very short and it was wet. I wasnt loaded very heavy and all was going well. Then the machine just started sliding. It slid off the "cliff" rolled over twice and landed on its feet. It was still running and after some doing me and 5 other guys got it out and I finished the day. The machine worked PERFECTLY!