car seat nissan almera

i need a child car seat to fit 3 cars?

my son is 12 months now and i need to get a new car seat.
i need one to fit 3 cars, a nissan primera, nissan almera, and fiat punto.
anyone have a suggestion of a good child car seat to fit multiple cars?
thx
Margaret…
they are not mine. i dont drive they are family members cars.

Britax seats are easy to fit, our one takes my son up to about 4 years old and will fit in a Ford focus and a Nissan Micra so a big car and a very small one.

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