We previously had a gogo and had a peugoet 3008. If you remove the arms from the seat then the seat fits in the area under the car boot, and the scooter fits complete width ways in the boot, no need to fold seats and the parcel shelf even stayed in place, we used to take the battery off and place at the back of the boot as that made up nearly half the weight of the scooter. If you need the arms on the scooter you would have to place the scooter seat on the back seat of the car.
this was a previous model 3008, so you should definetly check on the new model in case anything has changed boot wise although I don’t think it has