Hi I'm new - W168 issues

[Goblin]

Hi guys, I'm new one here but I've been lingering for a while.

I've got an A170CDi which is fully auto, and I've just bottomed it out on my drive at home. Realising what I'd done I stopped immediately and got out to check for any damage, and it's sprouted a leak from just behind the front nearside wheel. I'm guessing this is auto transmission fluid, so has anyone had any experience of this and how expensive it's likely to get?

 

[Grey Area]

How near the wheel? And how much? A leak near the wheel might be break fluid.

 

[Goblin]

It looks to be coming from a black box I'd say 10 - 15 centimetres back. Looking at the Haynes I've got it's suggesting it's the auto box sump.

 

[Goblin]

I've just been and moved the car so I can inspect underneath, it doesn't appear to have dropped much more fluid out from what I can tell. I'm going to get it checked out tomorrow and see what's what