For one it's stupid
costly to rent
car seats, in my experience rental places want upwards
of $ 15 / day or more to rent a single
car seat (I have been quoted $ 25 a day) after a few days you can exceed the cost
of simply purchasing new... Meaning you could have purchased a brand new in the box
car seat and checked that at the luggage counter complete with all it's factory packing that should allow it to arrive undamaged and you now have a backup or travel
car seat complete with packaging... Second you have no idea about the condition
of that rented
car seat, as you imply, unseen damage is well unseen regardless
of claims
of «inspection» by the rental company, there is no way they can't tell if it's damaged if the damage is unseen, they are only doing visual checks nothing more... In the
end there is nothing to assure you that your «rented»
car seat will be in any better condition then one you brought with you or that it wasn't in an unreported «accident» from the previous renters or mishandled by the previous renters... If safety is you
end goal, renting a
car seat at your destination is not inline with that goal...