To clarify, automatic means (basically) that you don't need to use your hands to open the trunk. I believe the 6 series BMW has this feature as does the Q7. I know it's more of an SUV/Minivan feature, but I read somewhere that the S5 has it too. The Audi website lists it as a feature in their Glossary, but it doesn't specify which models come equipped with this.
At least on my S5 its just automatic to open it, with a small button on the driverdoor, or I think its possible with the keythingie too (and you can open it normally/manually with the button on the trunk lid).
No Automatic closing. Its more the opposite, I'm quite often a bit too careful and probably end up being too soft when I close it, so I have to try again with a bit more force to make it close and lock.
Sorry, I guess I should have clarified a bit more. The opening of the trunk lid is not a motorized operation, rather it's just using hydraulics or spring action to open the trunk after the release button has been pressed. As markusla mentioned, closing the trunk is a manual effort.
I see, so to clarify further, does the trunk just pop open a little (requiring you to still lift it to put things in) or does it open it far enough that you don't need to touch it until you need to close it (which I understand is a manual task)?