Bests & Worsts Reviews from Amazon

When it works it's great, BUT: Breville uses a cheap plastic impeller that wears down. The impeller is what pushes the coffee out after it's been ground. If the impeller doesn't work, the coffee beans aren't able to flow down into the burr. Apparently this goes back several years. I bought mine in Dec, 2015. This issue has begun to pop-up on the BCG820, but it's been happening on other models as well, like the BCG400SIL, BCG600SIL, and BCG800XL. The BCG820 has a metal “armor” that just clads the impeller, but underneath it is just a plastic part similar to the other models. This metal piece doesn't really do anything other than make it "look" like it's metal when you simply glance at it from the top with the burrs on. The issue doesn't start happening until after it's out of warranty. Mine started happening about 6-7 months after the warranty period had ended. Breville doesn't sell the part on its website to be replaced. Google "Hidden defect in Breville coffee grinders" for details on the issue. There's a guy that sells a 3d-printed impeller for the BCG800, which can be found by searching "BCG800XL Grinder Jamming due to Worn Impeller"