Initially presented early in 1933, the Audi Front 220 was Europe’s first car to combine front-wheel drive with a 6-cylinder engine. The 2.0-liter engine was replaced by a 2.25-liter one in 1935, and became known as the “225”. The larger-engined car introduced in 1935 continued to be offered until 1939. The 2.0-litre engine was shared with Auto Union’s Wanderer W22 introduced that same year. (Photo credit: Sean Connor)