The 2006 Audi A3 has a 2.0 L base engine size.
The 2006 Audi TT has a 1.8 L base engine size.
The 2006 Audi S4 has a 4.2 L base engine size.
The 2006 Audi A4 has a 2.0 L base engine size.
The 2006 Audi A8 has a 4.2 L base engine size.
The 2006 Audi A8 has a V8 engine.
The 2006 Audi S4 has a V8 engine.
The 2006 Audi A6 has a V6 engine.
The 2006 Audi TT has an inline 4 engine.
The 2006 Audi A4 has an inline 4 engine.
The 2006 Audi A3 has an inline 4 engine.
The 2010 Audi Q5 has a 3.2 L base engine size.