The 2016 Frontier has a payload capacity ranging from about 1,400 to 1,500 pounds, depending on the model. That’s enough for a pallet of sod, a couple of motorcycles, or three of your heaviest friends (no judgment).
Bed volume? The long bed holds about 47 cubic feet; the short bed holds around 39 cubic feet. To put that in relatable terms: you could fit about 400 watermelons in the long bed. Or 200 watermelons and a really big cooler.