How to Choose a Mercedes-Benz 3-Row SUV

Photo Source/Copyright: Mercedes-Benz USA

Looking for a three-row Mercedes sounds simple enough until you realize the lineup tackles that back row four completely different ways. One is a bona fide luxury hauler built for full-grown adults. Another is an improbably compact runabout pulling off a packaging party trick, while the other two treat extra seats as occasional backup when carpool duty suddenly doubles.

Here’s how the four models actually shake out once you look past the brochure.

Mercedes-Benz GLS: The Uncompromised Seven-Seater

If you regularly haul tall teenagers, in-laws, or adult friends, don’t overthink it: head straight for the GLS. It’s the only Mercedes SUV where the third row comes standard rather than hiding on an options list. Mercedes officially rates the rearmost seats for passengers up to 6’4”, and for once, that’s genuine reality, not marketing fluff. You can sit back there on a three-hour interstate drive without bruising your knees against the seatback.

Under the hood, the GLS 450 runs a turbocharged 3.0-liter inline-six with mild-hybrid assist, putting down 375 horsepower and 413 pound-feet of torque. Step up to the GLS 580, and you get a 4.0-liter V-8 pushing 530 horsepower. Every model gets standard 4MATIC® all-wheel drive and power Easy Entry folding. 

If you want maximum road-trip comfort, trade the second-row bench for individual captain’s chairs; you drop capacity from seven to six, but you get a center aisle that makes clambering into the back far less clumsy. You can even spec heated rear seats and five-zone climate control with a dedicated third-row zone.

Mercedes-Benz GLE: The Midsize Weekday Compromise

The GLE remains the brand’s core luxury hauler, but its optional third row serves a specific purpose: emergency backup. It’s smaller than the GLS by design because the vehicle itself is built to handle tight parking decks, school pickup lines, and daily errands without feeling like an ocean liner.

Think five passengers from Monday to Friday, plus two pop-up jump seats when your kid’s friends need a ride home from soccer practice. Base power comes from a 255-horsepower 2.0-liter turbocharged four-cylinder with mild-hybrid assist. 

The real saving grace for back-row riders is the standard panoramic sunroof, which stretches far enough back to prevent passengers from feeling trapped in a dark cave.

Mercedes-Benz GLB: The Compact Packaging Surprise

Fitting three rows inside a compact luxury crossover sounds absurd, yet the GLB pulls it off. Sized strictly for kids or smaller riders up to 5’6”, this optional setup is tailored for young families who simply refuse to maneuver a massive rig.

The redesigned GLB steps in to replace the former EQB, launching electric-first with a hybrid arriving later. Two battery-electric variants lead the way, both drawing from an 85-kilowatt-hour (kWh) pack: the rear-drive GLB 250+ (268 horsepower) and the dual-motor GLB 350 4MATIC® (349 horsepower). It remains a genuine rarity: a compact luxury electric SUV with seven seatbelts.

Mercedes-Benz EQS SUV: The Silent Flagship

If you want zero tailpipe emissions alongside serious highway isolation, the EQS SUV represents the electric counterpart to the GLS. While its third row remains optional, the cabin’s best trick is a power-sliding second row. 

Instead of being locked into fixed legroom, you can slide the middle bench forward or backward on the fly, balancing space between adults in the middle and youngsters out back.

Choosing Your Third Row

Choosing the right model comes down to who climbs into that back row, and how often. If it’s adults on long road trips, you need the GLS. For occasional neighborhood shuttling, stick with the nimbler GLE or GLB. Just climb into the back yourself on the showroom floor before signing any paperwork.