The verdict: Mercedes-Benz’s largest SUV, the GLS, carries passengers in comfort and style — even those in car seats. The three-row GLS580 we tested had seating for seven occupants with two sets of easy-to-access Latch anchors in both the second and third rows.
Does it fit three car seats? No, but it was close; the outboard seats are very wide, but the middle seat is narrow.
Take a look at how the Latch system and each car seat scored below in our Car Seat Check of the 2020 Mercedes-Benz GLS 580.
Related: Search Car Seat Checks
- Latch: The two sets of lower anchors sit under large upholstery flaps; they’re clearly marked and easy to use. The second row’s three top tether anchors sit a third of the way down the seatback; they’re also easy to see and use.
- Infant seat: Installation was easy and the seat fit well. Our 5-foot, 6-inch-tall front passenger had plenty of legroom.
- Rear-facing convertible: Again, installation was easy and the seat fit well.
- Forward-facing convertible: After raising the power head restraint, the seat was easy to install and fit well.
- Booster: After raising the power head restraint, the booster fit well. Stable buckle stalks should make it easy for kids to buckle up independently.
- Third-row access: A button on the seat automatically moves the first and second row seat up to create a large opening. It takes a while to do, but the one-touch button makes it easy.
- Third-row Latch: The two sets of lower anchors are exposed for easy connection. The two top tether anchors on the seatback are also clearly marked and easy to use.
- Third-row booster: The third-row head restraint can be raised but does not come out, which affects how the booster fits against the seatback — it’s not flush, and it should be. The third row has stable buckles, which make it easier for kids to buckle up independently, but legroom is very tight.
- Third-row forward-facing convertible: Installation was easy, but the head restraint again pushed this seat forward off the seatback and, again, legroom is very tight.
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: One room, fit or connection issue. Some problems accessing the third row when available.
C: Marginal room plus one fit or connection issue. Difficult to access the third row when available.
D: Insufficient room, plus multiple 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.
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