I've searched, Google and here, and I haven't been able to find the dimensions of the cargo area with the rear seats up for the 09-10 models.

 

trunkroom - 20.6 cu.ft

don't remember where i found it from, and not sure if thats with seats up, but i gave it a shot lol

 

Seats up: 20.6 cubic feet
Seats down: 57.3 cubic feet

2010 Honda Fit - Specifications - Official Honda Web site

 

all we need to know that it's moucho grande

 

I actually do have measurements at home...I will post them this weekend.

 

Sorry I should have clarified a little more, I'm looking for the actual X inches by Y inches - I regularly have to haul around two 36" x 26" x 8" crash pads and was curious if I'd be able to do it with passengers in the back.

I found a diagram for the GD that has it at approximately 40" x 27", and it's listed as having almost an extra cubic foot of space behind the seats, and didn't know if it was a sloping roofline, more intrusive wheel wells, or what.

I'm going to test drive one later on today, so I'll just bring a tape measure with me and see.