I brought the Auto-IQ exactly a year ago and noticed cracks developing on the larger jars. They are not used as much as my other ninja systems and I am very disappointed with this quality. After calling the call centre, they tell me that it is a limited warranty and now would have to pay to buy new jars! This is not the Ninja appliances I am used to and definitely not the quality I am used to. I use the instapot and smoothie jars and have not faced issues with those.