CARS.COM — The Lexus IS 350 F Sport luxury performance sedan gets some exterior styling updates to the headlights, air intakes, spindle grille, taillights and exhaust, as well as a new 10.3-inch multimedia screen replacing the outgoing model's 7-inch display. The last time we checked the five-seat sedan — for the 2015 model year — we encountered a bit of trouble with legroom when installing our rear-facing convertible seat, and lots of trouble with legroom with our infant safety seat. The 2017 IS 350 fared better.
How many car seats fit in the second row? Two
A: Plenty of room for the car seat and the child; doesn't impact driver or front-passenger legroom. Easy to find and connect to Latch and tether anchors. No fit issues involving head restraint or seat contouring. Easy access to the third row.
B: Plenty of room. One fit or connection issue. Some problems accessing third row when available.
C: Marginal room. Two fit or connection issues. Difficult to access third row when available.
D: Insufficient room. Two or more fit or connection issues.
F: Does not fit or is unsafe.
About Cars.com's Car Seat Checks
Editors Jennifer Geiger, Jennifer Newman and Matt Schmitz are certified child safety seat installation technicians.
For the Car Seat Check, we use a Graco SnugRide Classic Connect 30 infant-safety seat, a Britax Marathon convertible seat and Graco TurboBooster seat. The front seats are adjusted for a 6-foot driver and a shorter passenger. The three child seats are installed in the second row. The booster seat sits behind the driver's seat, and the infant and convertible seats are installed behind the front passenger seat.
We also install the forward-facing convertible in the second row's middle seat with the booster and infant seat in the outboard seats to see if three car seats will fit; a child sitting in the booster seat must be able to reach the seat belt buckle. If there's a third row, we install the booster seat and a forward-facing convertible. Learn more about how we conduct our Car Seat Checks.
Parents should also remember that they can use the Latch system or a seat belt to install a car seat, and that Latch anchors have a weight limit of 65 pounds, including the weight of the child and the weight of the seat itself.