You’ll get a couple of years' worth of exercise out of a treadmill if you keep it maintained. If you let it sit for too long or you abuse the heck out of it, that will seriously degrade your chances of a long-lasting device. NordicTrack offers a variable warranty that covers labor for one year, parts for two years, and the frame for a full decade. If you take care of these machines, they should last quite a while.