Preheat oven to 350°F. Prepare baking pans with non-stick spray or other pan release method.
In large bowl, mix flour, sugar, cocoa powder, baking powder, baking soda, and salt. (I use my stand mixer on the lowest speed for this.)
In a separate bowl, whisk oil, vanilla, eggs, and sour cream. Whisk until eggs are fully beaten and mixture is creamy and a pale yellow.
Pour oil mixture into dry ingredients. Mix until the dry ingredients are incorporated and there are no lumps. With a stand mixer, beat for about 1 minute on the lowest speed.
Add hot coffee to batter. This will make it a bit sloshy, mix until batter smooths out again. About a minute.
Divide batter evenly into cake pans. Bake for about 30-35 minutes. You don't want this to over bake, so keep a close eye on it. *Bake time will vary if using cake pans other than those listed above. Your cakes are done if the middles spring back when you press them, or if a toothpick can be inserted and comes out clean. Allow cakes pans to cool for about 5 minutes before removing cake. After removing cakes from pan allow to cool completely before frosting.