Had to take a sofa to the charity shop today so loaded it into the rear of my 2012 Vrs hatchback. I couldn't quite close the boot so had to use some well wrapped bungees to keep the boot closed. When hooking the bungee to the bumper I noticed a rectangular cut out, underneath, in the centre of the bumper. Although I keep my car clean I must admit to never getting this far under the bumper. So my question, as per the title, "do they all have this?"

Towbar prep probably.

I have the same on my VRS hatch.  As far as I can tell it has never had a towbar fitted.

It seems they all have it. see these two eBay listings for second hand rear bumpers off the MkII vRS.

 

One for the estate...

 

http://www.ebay.co.uk/itm/SKODA-OCTAVIA-ESTATE-REAR-BUMPER-09-12-GENUINE-SKODA-/121303394567?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Cars+Type%3A2.0+RS%7CModel%3AOctavia&hash=item1c3e3ee907#ht_1084wt_1111

 

And another for the hatch...

 

http://www.ebay.co.uk/itm/Skoda-Octavia-Vrs-Rear-Bumper-/261456377113?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3ce003b519#ht_120wt_1348

 

Both have the central cut-out you mention and the offset cut-out for the towing eye.

Thanks for the quick replies, just hadn't noticed before and wondered if it was for towbar.