* 4.2L V8: This was the base engine option, producing around 335 horsepower.
* 4.2L V8 (Quattro): This was the same engine as the base model, but with Audi's Quattro all-wheel-drive system.
* 6.0L W12: This was the top-of-the-line engine option, producing around 450 horsepower.
It's impossible to know exactly what engine your specific 2004 Audi A8 has without more information. To determine the engine size, you can:
* Check the vehicle's identification number (VIN): This can be found on your car's registration or insurance documents, or on a sticker inside the driver's side door jamb. You can then use the VIN to look up the engine size on an online VIN decoder.
* Look at the engine itself: The engine size is often stamped on the engine block.
* Consult the owner's manual: Your owner's manual should list the engine size and other specifications.
I hope this helps!
