Probably the biggest issue was jumping out of gears. The later models were supposed to be better, but I do not know the exact cutoff. I think it is around the 18000 and later serial numbers. Otherwise the diesels are very fuel efficient. They do have LIVE PTO in the form of putting the Power Director into neutral, which stops the tractor but keeps the PTO running. My 190XT Series III has around 4200 hours and has plenty of power and weight for my baling needs, even in the steep hills.