We bought this blender specifically for making smoothies.  We've owned it less than a year and when using the personal cup mixer to make a smoothie, it came apart in the middle of the mixing process.  I had to dig the blades out of my smoothie.   I have since been using the actual blender to make my smoothies and it is a very frustrating process.  It mixes terribly and constantly jams and struggles to cut through the fruit.  In addition, when operated on speed 2, the whole blender vibrates across the counter and the speed knob falls off.   This is not a great blender.  Would not recommend.