I bought a Polaris 4 year extended warranty. My 2018 XP900 quit running last July. I took it to Auburn Extreme Powersports in Auburn California. The only thing they can figure is we ran it at idle and very slow over the 1353 miles and 493 hours and it built up carbon. It had built up a lot of carbon on one piston and the valves causing a lean condition. They’ve never seen anything like it. Polaris tried to say there was dirt, dust etc in there and thats what caused it. The dealership fought hard for me saying they didn’t see anything like that at all. In the end Polaris paid for a long block to the tune of $7,300. I had to show proof to Polaris that I used factory parts, receipts and log book. First time an extended warranty paid off for me. I’m making sure to get the rpm’s up every day now, hoping for the best. I should have bought my wife a mule and me a RZR to start off with. Now she has a 1998 mule with enclosed cab and heater that I’m fixing up and I’m taking over the Ranger.