関連ワード:  2013 audi a4 known issues    2013 audi a4 common issues    2013 audi a4 issues    2013 audi a4 2.0 t common issues    2013 audi a4 quattro common problems    2013 audi a4 allroad common problems    common problems with 2013 audi a4    is the 2013 audi a4 reliable