source: Audi AG Successful model in its fifth generation Plant Director Albert Mayer: “The Audi A4 symbolizes our brand and our plant” More than 7.5 million units produced worldwide Audi is celebrating a major production anniversary in the premium mid size segment: 25 years ago, the first Audi A4 drove off the assembly line in Ingolstadt. Since then, the brand with the Four Rings has produced more than 7.5 million units of the model. A quarter of a century after...