Audi A4 Celebrates 25’th Anniversary. Today, 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 its birth, demand is unabated for the Audi A4, now in … Continue reading Audi A4 Celebrates 25’th Anniversary – 7.5 Million Units Sold Till Date