* Audi A8 3.2 FSI: This model has a 3.2 liter naturally aspirated V6 engine.
* Audi A8 4.2 FSI: This model has a 4.2 liter naturally aspirated V8 engine.
Please note that there were also other engine options available, like a 6.0 liter W12 engine. However, the 3.2 liter V6 was the base engine offered in the 2009 A8.