The Corsa is one of the better cars in the class for rear space. Two adults will be able to get comfortable, although the long-legged will be at risk of having their knees brushing the seats in front if they’re behind a taller driver. Still, the fairly boxy shape means that the five-door is good for access, and is better than the Fiesta and other more swoopy-looking hatches if you regularly need to duck in to reach a child seat.
Three-door models are, of course, more restricted for access; you have to flip forward the front seat and clamber through the narrow gap; it’s a move best left to the nimble. Still, even this is really no worse than in other three-door cars in the class. Having said that, we’d recommend the five-door car unless you’re really sold on the looks of the more rakish three-door. It doesn’t cost too much more, but adds a lot more practicality.
The side pockets in the rear are fairly small, so you certainly won’t get a 1.0-litre bottle in there.