How Do Car Seats Fit in a 2020 Mercedes-Benz GLB?

mercedes-benz-glb-2020-03-dynamic--exterior--profile--white.jpg 2020 Mercedes-Benz GLB | Manufacturer image

The verdict: The 2020 Mercedes-Benz GLB is an all-new SUV for 2020. If you’re thinking “another new SUV? you’re not alone. SUVs are popping into small holes in automakers’ lineups and the GLB is a compact SUV that splits the difference between the GLA and GLC, but with one feature that helps it standout: an optional third row. We tested a two-row model that seats five and found it plenty roomy for two car seats.

Does it fit three car seats? No.

Take a look at how the Latch system and each car seat scored below in our Car Seat Check of the 2020 Mercedes-Benz GLB250.

Related: Search Car Seat Checks

mercedes-benz-glb-2020-csc-scorecard.png graphic by Melissa Galicia Vega

A Grade

  • Latch: The two sets of lower anchors are exposed for easy access and connection.
  • Forward-facing convertible: After raising the head restraint, the seat fit well and was easy to install. Three top tether anchors sit on the seatback; they’re clearly marked for easy access and connection.

B Grade

  • Infant: Connection to the Latch anchors was easy. We moved the front passenger seat up a little bit to make room for our 5-foot-6-inch-tall passenger, who had just OK legroom. Taller passengers will need more legroom to be comfortable.
  • Rear-facing convertible: Again, installing the seat was easy and we had to move the front passenger seat up to accommodate it.
  • Booster: After raising the head restraint, the booster fit well. The buckles slip into pockets in the leather, however; this could make it difficult for kids to use independently.

C Grade

  • None

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2020 Mercedes-Benz GLB 250 Base 4MATIC
53,030 mi.
$28,400 $200 price drop
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2020 Mercedes-Benz GLB 250 Base 4MATIC
13,383 mi.
Good Deal

Grading Scale

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’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.’s Editorial department is your source for automotive news and reviews. In line with’s long-standing ethics policy, editors and reviewers don’t accept gifts or free trips from automakers. The Editorial department is independent of’s advertising, sales and sponsored content departments.

Photo of Jennifer Geiger
News Editor Jennifer Geiger joined the automotive industry in 2003, much to the delight of her Corvette-obsessed dad. Jennifer is an expert reviewer, certified car-seat technician and mom of three. She wears a lot of hats — many of them while driving a minivan. Email Jennifer Geiger

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