I don’t have one Matty, but had a good look at the Puma when looking for a car for one of my daughters. I’d say no, because the car is based on a Ford Fiesta and much of the capacity is the height of the boot, due to a large under floor box (with a drain ?) which is of no use for a wheelchair.
Regardless of what any of us say though, I’d always say that it is absolutely essential to try your specific wheelchair in the boot of any car you are considering.