I had the tractor for almost 6 years. I must say I had little trouble with this tractor. I drained the coolant for the first time. I think that was the biggest problem. I think I should be changing all the hydraulic filiter too, I guess I'm overdue for some maintenance. The condensate from the air conditoning is a problem with my tractor since new. It gets an air lock and leaks out the vents sometimes. It can get very humid here. My best feature is the transmission's very smooth operation. I have the earliest version of this tractor, which is not full CVT. There was some software glitches in the begining, but the dealer gave me a 6490 as a loner. Boy I missed my tractor, I don't really care for the powershift (its ok but my Dyna-VT is much better). Luckly I got it back within a couple days. Let me know if you have any other questions.