Rated 1 out of 5 by Katie2153 from Broken Blender I've had this blender for over three years now and it had been working great until recently. I've primarily used it to make smoothies or simple soups. The other day, after I was done blending, I noticed small and large pieces of black plastic all throughout my smoothie and it had started to leak through the bottom of the blender jar. It appeared as though the blender had chewed up a chunk of the plastic piece in the bottom of the blender jar. Thank goodness I noticed before consuming! Similar to other reviewers, this blender works great initially but doesn't seem to hold up after a few years, which is disappointing for the price point.

Date published: 2025-01-23

Rated 1 out of 5 by Dissatisfied in Hawaii from Broke in less than 2 months and less than 10 uses [This review was collected as part of a promotion.] So disappointed! The blades are no longer attached to the drive shaft securely. I wanted a smoothie of chocolate milk, one banana, and peanut butter with ice. I ended up with banana chunks and a blob of peanut butter floating in chocolate milk. Have just called KitchenAid for a replacement and the nice representative Jamie said it will take 3-4 weeks for my replacement to arrive. This is unfortunate because health reasons require me to consume soft foods such as smoothies. Because of my positive experiences with KitchenAid dishwashers and mixers, I will give this another try. Hope the replacement comes asap and works!

Date published: 2020-06-16

Rated 1 out of 5 by mmiller94 from Worked Well for a Year - Now a Nightmare We received this blender as a wedding gift and were very excited! It has worked great for 1.5vyears, and now it is falling apart. It started with a small leak. Now the blade base has become very lose and the rubber gasket has fallen out, allowing leaking at a surprising rate. It led to smoking and damage to the base of the blender when plastic was grinding directly on plastic, also creating an awful smell. The only straightforward option is to replace the blender body, but I am worried we will just have to do it again in a year. For the price you pay, this is insane. And I can't get in touch with anyone on chat or support to discuss replacement.

Date published: 2026-01-26

Rated 4 out of 5 by Jn22 from Love it! [This review was collected as part of a promotion.] I love the blender. I didn’t find using the controls too difficult after you understand how the machine works. Love the way it cleans and knows exactly how long to run in that mode. My only issue, which is not a deal breaker, is that when we ordered the paperwork said there was a smaller glass blender jar available to purchase. Not a drink blending jar an actual blender hat. When I called to order I was told it hadn’t been released yet. I will continue to try to order. Again, just would like to have a glass jar. Love the blender. Heavy duty and does what we need. Pricey but with it. You won’t be disappointed.

Date published: 2020-05-20

Rated 5 out of 5 by By the Lakes from Worth the wait [This review was collected as part of a promotion.] Kitchenaide sent me a K400 after my last blender overheated. When I tried to use it the machine leaked and smoked. Frustrated, I sent the item back and thought against buying another kitchen product. I relented and am SOOOOOO happy I did! The K400 has been used every day since it was received. The last blender we had was used AT BEST, once every other week. We just find things to blend now. Our smoothies are on point. We’ll be blending up baby food as well once our little one arrives. Even with all the back and fourth of mailing the blender a couple of times, this product was worth the wait.

Date published: 2022-12-16

Rated 1 out of 5 by Alex from Waste of money! I bought this KitchenAid blender about 15 months ago and had high hopes since it’s pricey but what the heck I thought it was going to last many years and I deserved a good product. I only used it for simple things like soups and smoothies. Now it’s leaking. The problem is just a gasket, but KitchenAid makes it impossible to replace such a simple part. Instead, your only option is to buy an entirely new jar or throw the whole thing away, even though the motor is practically new. Very disappointing design. For the price, I expected durability. Sadly, I cannot recommend this blender.

Date published: 2025-09-04

Rated 5 out of 5 by Russiet from It's Souped-up [This review was collected as part of a promotion.] Wow! I mean WOW!! I've always had cheap multi-button blenders in the past, and never thought much of it. It wasn't until I developed a motor neuron disease and could no longer chew effectively that I realized that the old blender wasn't going to cut it. The K400 chews through anything frozen in the blink of an eye. I've been making smoothies out of foods that I had no idea could be put in a blender. The only thing that I should have done is to have bought it with a tamper included. 98% of the time a tamper isn't necessary, but the last 2% really needs one.

Date published: 2020-09-06

Rated 1 out of 5 by Kayoko k from Horrible... turn to brown water and no support.. [This review was collected as part of a promotion.] Horrible!! I noticed when I used the clean mode, water color turned brown color... I repeated several times, still clear water turned to brown. Looks like in the blender‘a middle of metal was rotted. I called kitchen aid customer service phone, chat etc... waiting more than one hour, no one answer. No customer service!!! I found email address, but sent to India !! I bought a different product.... so disappointed. I cannot believe that I was drinking smoothie with brown water!!

Date published: 2021-01-22

Rated 2 out of 5 by Abril from Blender will oxidize and bleed that into your food I bought this a while ago and the machine itself works wonderfully but the blender cup itself will oxidize and bleed that into your food. I got my cup repleaced two years ago because of this issue and here I am again with the same issue. I have followed their instructions on how to wash it and I’ll even take it a step further by drying it by hand as soon as I’m done hand washing it. Despite my efforts I can not prevent it from oxidizing. And if you are wondering if it is a user error, no it’s not, my friend has the same style of blender and hers is also leaking the oxidation oil. This is disgusting and should not be happening.

Date published: 2025-04-15

Rated 1 out of 5 by Notakaren from Worst blender ever… I never write reviews on anything but would warn anyone about buying this blender. I received blender as Christmas gift, worked for a couple weeks then the rubber bottom was stripped by the metal propeller. I also had black goo leaking out as well. This is so poorly designed, I can’t believe the blender does not some how lock into place, especially with a blender this heavy duty… customer service was great. They sent a new one however, the same thing happened again with the new blender… at this we are throwing in our cards and just buying a different brand of blender. Very disappointed in kitchen aide

Date published: 2024-06-14