It has varied over time. I ran a couple of our Ranger 800 up to 20,000 miles or more, the one 570 with the engine torn apart is running at about 17,000 miles, it will probably go next year if Polaris keeps up with their Ag discounts. I would like to get to where I can trade them out every couple of years, but don't know if that's in the cards. These 570s have been solid, and wouldn't be afraid to push every one of them to 20,000 miles, it just takes more parts to keep them alive that long. Buy 10000 miles most Rangers need a good suspension-steering and clutch overhaul or replacement