Ive only had this dishwasher for 2 months, and have discovered a major design flaw: if the spray arm is obstructed (like if something falls down into the basin by mistake, or the edge of a bowl dips below the tray slightly), the machine will continue to complete its cycle without stopping from the error. The cycle will continue, and your dishes will still be filthy at the end. Since then, I’ve run 3 cycles and each time, dishes do not come out clean. I’m going to run a cleaning cycle (with vinegar) and see if this helps. If not, I’ll be sending this back. A shame!