The 2013 Audi S8 has a V8 engine.
The 2013 Audi S6 has a V8 engine.
The 2013 Audi S4 has a V6 engine.
The 2013 Audi A8 has a V6 engine.
The 2013 Audi A7 has a V6 engine.
The 2013 Audi S7 has a V8 engine.
The 2013 Audi S5 has a V6 engine.
The 2013 Audi Q7 has a V6 engine.
The 2013 Audi TT has an inline 4 engine.
The 2013 Audi A3 has a 2.0 L base engine size.
The 2013 Audi A6 has a 2.0 L base engine size.
The 2013 Audi Q5 has a 2.0 L base engine size.