How much stuff can I haul with this car?

If by stuff you mean people, not a lot. There are two "back seats" and we place that term in quotation marks because you'd laugh if anyone asked you to sit back there for more than a one-hour drive (we're only slightly exaggerating). If by stuff you mean golf clubs, we found a video of a guy who puts not one, but two sets of golf clubs in the trunk with room to spare. Now it's possible the back seat was folded down, but take his feat for what it's worth.

Photo Credit: YouTube