Installing a booster seat Install the booster seat in the back ... if your car seats have high backs or head rests. Choose a high-back booster if your car doesn't have rear seat head rests.

Take a look at how the Latch system and each car seat scored in our Car Seat Check of the 2025 Mini Countryman.

Belt fit in booster mode and installation with LATCH are both excellent. The seat scored a Better for crash protection.

Booster fit (with back): A rating that reflects a booster seat's ability to correctly position the lap and shoulder belts in various test vehicles using a child-sized dummy, when used as a ...