I have the predecessor to this model, and if these are anything similar then beware of the ceramic inserts.  We owned ours for around 2 years (despite the serial number showing it was made in 2011), with in total around 40-50 uses over the two years.  Yesterday we were cooking with it and the ceramic insert just cracked and leaked the contents all over the counter - we have always looked after the cooker, always putting room temperature ingredients into it, and never putting it into the dishwasher.  When I called customer services they advised that because I no longer had the receipt that they would use the serial number to determine its age, and unfortunately, I didn't live in the USA until 2 years after it was manufactured! the only offer was that they could send me a slightly discounted new bowl which I would have to pay for.  We have all Kitchenaid products  and have been very pleased with them, but this is a real disappointment.