I haven't measured it exactly, but in eyeballing my Pliko, I would judge it at somewhere between 168-172 degrees at full recline. The padding on the side wings is quite thick, nearly an inch, but the seat and back padding is about 1/3 in. (If you think about it, it can't be too thick or it won't fold compactly.) At full recline, the seat is partially supported by the back of the hood, so taking the hood off will allow it to drop another couple of degrees. The footrest is stiff plastic with a hinge in the center. (Mine is a Sherpa model, BTW.)
I also have a Maclaren Vogue, which is their mid-range model. It reclines to about 150 degrees, and the padding is about 1/3 inch all the way around. The footrest is a soft rubber sling.
The Pliko folds into more of a true rectangle, as the seat folds outward and flattens. The Mac is thicker on the handle end, as the seat folds inward on itself, so the padding does not project down toward the back wheels. I find that the Mac slides into smaller spaces more easily, as the wheel end is only about 7" thick, while the handle end is about 11" thick. The Pliko is shorter when folded, about 37", while the Mac is 42" long.