This MPG icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 4,300 icons, all in the same style and quality.
It's the capital letters 'MPG" drawn inside of a rectangle. The rectangle is drawn to look like a sheet of paper with the upper right corner creased and folded down to the front. The letters are centered from left to right and closer to the bottom than the top.