When it comes to mid-size sedans, the Nissan Altima is the epitome of what a mid-size sedan truly is. The 2020 Nissan Altima has made its introduction and has come with a few new changes. The first change is that there's a new trim that comes in a piano-black hue. Most of the main changes have taken place with the safety features. Nissan is now using a package of safety features that are known as Safety Shield 360. The Platinum trim will also provide memory-mirror settings.