DEUTZ AG develops, designs, manufactures, and sells compact diesel engines for on-road and non-road applications. The company operates through two segments: DEUTZ Compact Engines and DEUTZ Customised Solutions. The DEUTZ Compact Engines segment comprises liquid-cooled engines with capacities of up to eight litres. The DEUTZ Customised Solutions segment specializes in air-cooled engines and large liquid-cooled engines with capacities of more than eight litres. It markets its products under the brand name DEUTZ Xchange. The company was founded by Nicolaus August Otto and Eugen Langen on March 31, 1864 and is headquartered in Cologne, Germany.