Probably not much. Mine was pretty much in the same place on the dipstick as yours and it only took about 1/2 litre to top it up athough mine is the TDI but I wouldn't expect that much difference.
If you click on the links in my signature you will get a slideshow. These were the dealer pics of my car before I bought it. I alway swore I would never get an automatic car but I love the DSG and the way it works, and now question if I would ever go back to a manual. Hang on a minute while I just pop off to get my pipe and slippers
Had a look at the pics, literally my perfect leon so let me know if you ever sell!!