Fun to drive isn't the first thing that comes to mind when describing three-row crossovers, but the 2014 Mazda CX-9 is just that with its 3.7-liter V-6 engine and responsive automatic transmission. Things got decidedly less fun when installing child-safety seats into it, however. The CX-9's interior isn't the roomiest, and the third row doesn't have a set of lower Latch anchors or any tether anchors. We can live without the third-row Latch anchors because you can use a seat belt to install a car seat instead, but the missing tether anchors means that a forward-facing convertible cannot be installed there.
In Car Seat Checks, we don't install rear-facing child-safety seats in the third row because most parents want the young children who ride in these seats in the second row so they can assist them, if needed. Kids in forward-facing car seats are older and a bit more independent, making it more likely that parents will install their child-safety seats in the third row when necessary.
How many car seats fit in the second row? Two
How many car seats fit in the third row? Because there are no tether anchors, we only installed the booster seat in the third row.
What We Like
What We Don't
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 and Jennifer Newman are certified child safety seat installation technicians.
For the Car Seat Check, we use a Graco SnugRide 30 infant-safety seat, a Britax Roundabout convertible seat and Graco TurboBooster seat. The front seats are adjusted for a 6-foot driver and a 5-foot-8 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. To learn more about how we conduct our Car Seat Checks, go here.
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.