Hi John
It’s not a matter of choice its simple physics my scooter will not fit in the cheaper Ateca fully assembled but will go in the Tarraco without even the need to worry or think about an extra inch or two.
However that said when I get around to visiting one of the two Seat dealers near me I will have my trusted two metre folding measure to re-check the Ateca boot space because it is better value for money but I’m not sure that the Ateca has the back seats that slide forward for those important extra inches but 4 or is it 5 years have passed since I last looked at that car so will check again soon.