It takes a long time to preheat. The door doesn’t close all the way unless you press on it. The back cooks quicker than the front. The interior is poorly designed. The middle rack is supposed to slide easily- it does if there isn’t any on it. If you want to bake more than 2 things in the main oven you better plan to use the convection on the microwave or make sure they are very small. Not a huge fan of the dial. Would not buy this again.