2006 audi a4 2006 audi a4 base sedan 4-door 2.0l 2006 audi a3 2006 audi a4 quattro 2006 audi a4 quattro base sedan 4-door 2.0l 2006 audi a3 base hatchback 4-door 2.0l 2006 audi a4 quattro s line sedan 4-door 3.2l 2006 audi s4 base sedan 4-door 4.2l 2006 audi a4 cabriolet convertible 2-door 1.8l 2006 audi a6 quattro avant wagon 4-door 3.2l