Where is the transmission dipstick on an 2004 Audi a6 quattro 3.0?

On a 2004 Audi A6 Quattro 3.0, the transmission dipstick is located near the back of the engine bay, typically on the driver's side. It may be covered by a plastic engine cover, which you'll need to remove to access it. Unlike some vehicles, this model may not have a conventional dipstick for checking the Transmission Fluid level; instead, the fluid level is often checked through a fill plug on the transmission itself.