| A6 Allroad C6 | 1997–2004 | 2.7 TDI quattro 120kW/163hp (2006–2011), 2.7 TDI quattro 132kW/180hp (2006–2008), 2.7 TDI quattro 140kW/190hp (2008–2011), 3.0 TDI quattro 155kW/211hp (2006–2011), 3.0 TDI quattro 171kW/233hp (2006–2008), 3.0 TDI quattro 176kW/240hp (2008–2011), 3.0 TFSI quattro 213kW/290hp (2008–2011), 3.2 FSI quattro 188kW/255hp (2006–2008), 4.2 FSI quattro 257kW/350hp (2006–2010) |
| A6 C6 | 2004–2008 | S6 quattro 320kW/435hp (2006–2011), RS6 quattro 426kW/580hp (2008–2010), 2.0 TDI 89kW/121hp (2005–2006), 2.0 TDI 100kW/136hp (2004–2011), 2.0 TDI 103kW/140hp (2004–2008), 2.0 TDI 120kW/163hp (2009–2011), 2.0 TDI 125kW/170hp (2008–2011), 2.0 TFSI 125kW/170hp (2005–2011), 2.4 130kW/177hp (2004–2008), 2.4 quattro 130kW/177hp (2005–2008), 2.7 TDI 120kW/163hp (2004–2011), 2.7 TDI quattro 120kW/163hp (2005–2011), 2.7 TDI 132kW/180hp (2004–2008), 2.7 TDI quattro 132kW/180hp (2004–2008), 2.7 TDI 140kW/190hp (2008–2011), 2.7 TDI quattro 140kW/190hp (2008–2011), 2.8 FSI 140kW/190hp (2008–2011), 2.8 FSI quattro 140kW/190hp (2008–2011), 2.8 FSI 154kW/210hp (2006–2008), 2.8 FSI quattro 154kW/210hp (2007–2008), 2.8 FSI 162kW/220hp (2008–2011), 2.8 FSI quattro 162kW/220hp (2008–2011), 3.0 TDI quattro 155kW/211hp (2004–2011), 3.0 160kW/218hp (2004–2006), 3.0 quattro 160kW/218hp (2004–2006), 3.0 TDI quattro 165kW/225hp (2004–2006), 3.0 TDI quattro 171kW/233hp (2006–2008), 3.0 TDI quattro 176kW/240hp (2008–2011), 3.0 TFSI quattro 213kW/290hp (2008–2011), 3.0 TFSI quattro 220kW/299hp (2008–2011), 3.2 FSI quattro 183kW/249hp (2006–2008), 3.2 FSI 188kW/255hp (2004–2009), 3.2 FSI quattro 188kW/255hp (2004–2008), 3.2 FSI 195kW/265hp (2009–2011), 4.2 quattro 246kW/335hp (2004–2006), 4.2 FSI quattro 257kW/350hp (2006–2011) |
| A6 C6 Avant | 2005–2008 | S6 quattro 320kW/435hp (2006–2011), RS6 quattro 426kW/580hp (2008–2010), 2.0 TDI 89kW/121hp (2005–2006), 2.0 TDI 100kW/136hp (2005–2011), 2.0 TDI 103kW/140hp (2005–2008), 2.0 TDI 120kW/163hp (2009–2011), 2.0 TDI 125kW/170hp (2008–2011), 2.0 TFSI 125kW/170hp (2005–2011), 2.4 130kW/177hp (2005–2008), 2.4 quattro 130kW/177hp (2005–2008), 2.7 TDI 120kW/163hp (2005–2011), 2.7 TDI quattro 120kW/163hp (2005–2011), 2.7 TDI 132kW/180hp (2005–2008), 2.7 TDI quattro 132kW/180hp (2004–2008), 2.7 TDI 140kW/190hp (2008–2011), 2.7 TDI quattro 140kW/190hp (2008–2011), 2.8 FSI 140kW/190hp (2008–2011), 2.8 FSI quattro 140kW/190hp (2008–2011), 2.8 FSI 154kW/210hp (2006–2008), 2.8 FSI quattro 154kW/210hp (2007–2008), 2.8 FSI 162kW/220hp (2008–2011), 2.8 FSI quattro 162kW/220hp (2008–2011), 3.0 TDI quattro 155kW/211hp (2005–2011), 3.0 160kW/218hp (2005–2006), 3.0 quattro 160kW/218hp (2005–2006), 3.0 TDI quattro 165kW/225hp (2005–2006), 3.0 TDI quattro 171kW/233hp (2006–2008), 3.0 TDI quattro 176kW/240hp (2008–2011), 3.0 TFSI quattro 213kW/290hp (2008–2011), 3.0 TFSI quattro 220kW/299hp (2008–2011), 3.2 FSI 188kW/255hp (2005–2008), 3.2 FSI quattro 188kW/255hp (2005–2008), 4.2 quattro 246kW/335hp (2005–2006), 4.2 FSI quattro 257kW/350hp (2006–2011) |