

The sedan’s outboard buckles have stable bases, but the middle one is floppy, so kids will likely struggle connecting to that one independently.

However, the bolstered seats push the booster atop the buckle, complicating access.

Related: Search Car Seat Checks graphic A Grade Take a look at how the Latch system and each car seat scored below in our Car Seat Check of the 2023 Lexus IS 500. For this Car Seat Check, we tested the performance-oriented F Sport Performance trim. The verdict: The 2023 Lexus IS 500’s backseat has easy-access lower anchors to make car-seat installation drama-free, but a lack of rear legroom created some problems when installing rear-facing car seats.
