Mercedes-Benz GLS-Class Dimensions & Size

How much cargo space and room does a 2026 Mercedes-Benz GLS-Class really have?

The 2026 Mercedes-Benz GLS-Class measures 205.1 in long, 79.9 in wide, 71.7 in tall, on a 123.2 in wheelbase, with a curb weight of about 5,754 lbs.

Looking for weight? See the Mercedes-Benz GLS-Class curb weight page — this page covers length, width, height and wheelbase.

Latest model year (2026):

The Mercedes-Benz GLS-Class measures 205.1 in long, 79.9 in wide and 71.7 in tall, on a 123.2 in wheelbase, weighing about 5,754 lbs.

VerifiedNHTSA Canadian Vehicle Specifications · Verified September 18, 2026

Overview MPG Engine Specs Fuel Cost Transmission Drivetrain Vehicle Class Maintenance Dimensions Curb Weight

Mercedes-Benz GLS-Class Dimensions — All Years

Year	Body / Variant	Length	Width	Height	Wheelbase	Curb Weight
2026Config 1 of 3	GLS CLASS GLS 580 4MATIC 4DR SUV	205.1 in	79.9 in	71.7 in	123.2 in	5,754 lbs
2026Config 2 of 3	GLS CLASS GLS 450 4MATIC 4DR SUV	205.1 in	79.9 in	71.7 in	123.2 in	5,467 lbs
2026Config 3 of 3	GLS CLASS AMG 63 4MATIC 4DR SUV	205.9 in	79.9 in	71.7 in	123.2 in	6,074 lbs
2025Config 1 of 3	GLS CLASS GLS 580 4MATIC 4DR SUV	205.1 in	79.9 in	71.7 in	123.2 in	5,754 lbs
2025Config 2 of 3	GLS CLASS GLS 450 4MATIC 4DR SUV	205.1 in	79.9 in	71.7 in	123.2 in	5,467 lbs
2025Config 3 of 3	GLS CLASS AMG 63 4MATIC 4DR SUV	205.9 in	79.9 in	71.7 in	123.2 in	6,074 lbs
2024Config 1 of 3	GLS CLASS GLS 580 4MATIC 4DR SUV	205.1 in	79.9 in	71.7 in	123.2 in	5,754 lbs
2024Config 2 of 3	GLS CLASS GLS 450 4MATIC 4DR SUV	205.1 in	79.9 in	71.7 in	123.2 in	5,467 lbs
2024Config 3 of 3	GLS CLASS AMG 63 4MATIC 4DR SUV	205.9 in	79.9 in	71.7 in	123.2 in	6,074 lbs
2023Config 1 of 2	GLS CLASS GLS 580 4MATIC 4DR SUV	205.1 in	79.9 in	71.7 in	123.2 in	5,754 lbs
2023Config 2 of 2	GLS CLASS GLS 450 4MATIC 4DR SUV	205.1 in	79.9 in	71.7 in	123.2 in	5,467 lbs
2022Config 1 of 2	GLS CLASS GLS 580 4MATIC 4DR SUV	205.1 in	79.9 in	71.7 in	123.2 in	5,754 lbs
2022Config 2 of 2	GLS CLASS GLS 450 4MATIC 4DR SUV	205.1 in	79.9 in	71.7 in	123.2 in	5,467 lbs
2021Config 1 of 2	GLS CLASS GLS 580 4MATIC 4DR SUV	205.1 in	79.9 in	71.7 in	123.2 in	5,754 lbs
2021Config 2 of 2	GLS CLASS GLS 450 4MATIC 4DR SUV	205.1 in	79.9 in	71.7 in	123.2 in	5,467 lbs
2020Config 1 of 2	GLS CLASS GLS 580 4MATIC 4DR SUV	205.1 in	79.9 in	71.7 in	123.2 in	5,754 lbs
2020Config 2 of 2	GLS CLASS GLS 450 4MATIC 4DR SUV	205.1 in	79.9 in	71.7 in	123.2 in	5,467 lbs
2019Config 1 of 3	GLS CLASS GLS 550 4MATIC 4DR SUV	202 in	76 in	72.8 in	121.3 in	5,578 lbs
2019Config 2 of 3	GLS CLASS GLS 450 4MATIC 4DR SUV	202 in	76 in	72.8 in	121.3 in	5,335 lbs
2019Config 3 of 3	GLS CLASS AMG GLS 63 4DR SUV AWD	202 in	76 in	72.4 in	121.3 in	5,754 lbs
2018Config 1 of 3	GLS CLASS GLS 550 4MATIC 4DR SUV	202 in	76 in	72.8 in	121.3 in	5,578 lbs
2018Config 2 of 3	GLS CLASS GLS 450 4MATIC 4DR SUV	202 in	76 in	72.8 in	121.3 in	5,335 lbs
2018Config 3 of 3	GLS CLASS AMG GLS 63 4DR SUV AWD	202 in	76 in	72.4 in	121.3 in	5,754 lbs
2017Config 1 of 3	GLS CLASS GLS 550 4MATIC 4DR SUV	202 in	76 in	72.8 in	121.3 in	5,578 lbs
2017Config 2 of 3	GLS CLASS GLS 450 4MATIC 4DR SUV	202 in	76 in	72.8 in	121.3 in	5,335 lbs
2017Config 3 of 3	GLS CLASS AMG GLS 63 4DR SUV AWD	202 in	76 in	72.4 in	121.3 in	5,754 lbs

Dimensions sourced from the NHTSA Canadian Vehicle Specifications database. Figures are measured per body style and can vary slightly by trim, wheel package, and suspension.

Mercedes-Benz GLS-Class data analysis

How Mercedes-Benz GLS-Class overall length varies

Across 26 configurations recorded for the 2017 through 2026 Mercedes-Benz GLS-Class, overall length runs from 202 inches to 206 inches. The strongest figure belongs to the 2024 Mercedes-Benz GLS-Class (GLS CLASS AMG 63 4MATIC 4DR SUV) at 206 inches, and the weakest to the 2019 car (GLS CLASS GLS 550 4MATIC 4DR SUV) at 202 inches — a spread of 2%. The narrow spread means any year of the Mercedes-Benz GLS-Class in this table behaves much like the others, so you can shop on price, condition and mileage rather than chasing a particular model year.

What changed for 2026

Average overall length for the 2026 Mercedes-Benz GLS-Class is 205 inches, against 205 inches for the 2025 car — it held flat. A carry-over year like this usually means no powertrain or structural change, so an older example is the cheaper way into the same specification.

How to read this Mercedes-Benz GLS-Class data

This page lists every 2017 through 2026 Mercedes-Benz GLS-Class record we hold for this measurement — 26 rows in total, one per configuration and model year rather than a single headline figure. Figures are published as the source agency records them: we do not round, average or interpolate missing years, and a year that is absent from the table is a year with no published measurement rather than a zero. Where a manufacturer offered several drivetrains or body styles in the same year, each appears on its own row, because those variants rarely share the same numbers.

Configurations behind these Mercedes-Benz GLS-Class numbers

The 2017 through 2026 Mercedes-Benz GLS-Class entries here cover the variants GLS CLASS GLS 580 4MATIC 4DR SUV, GLS CLASS GLS 450 4MATIC 4DR SUV, GLS CLASS AMG 63 4MATIC 4DR SUV, GLS CLASS GLS 550 4MATIC 4DR SUV and GLS CLASS AMG GLS 63 4DR SUV AWD. 2026 is the busiest model year in the record with 3 separate measured configurations, which is why a single quoted overall length figure for that year is rarely the one that matches the car in front of you. Match the row to the exact drivetrain, body style and engine on the window sticker or VIN before relying on the number, and use the comparison links below to see how those same configurations line up against rival models.

Where these Mercedes-Benz GLS-Class figures come from

Every value on this page is loaded from federal open data — EPA fuel economy submissions, NHTSA vehicle and crash-test records, and manufacturer specification filings — rather than dealer listings or copied editorial content. The Mercedes-Benz GLS-Class record refreshes as the agencies publish, which typically means new model-year rows appear in the autumn and crash-test results follow through the model year as vehicles are tested. Because certification data is filed per configuration, treat any single headline number for this vehicle with caution: the figure that applies to a specific car depends on its engine, drivetrain, body style and model year, all of which are listed separately above. If a number here disagrees with a brochure, the brochure is usually quoting the best available configuration rather than the one being sold.

Will the Mercedes-Benz GLS-Class fit your garage and parking space?

Measured against a standard single garage door (8 ft wide, 7 ft tall, 20 ft deep stall) and a standard US surface parking space (9 ft x 18 ft). Measure your own opening before buying — older garages are frequently narrower.

Garage door width

Fits

79.9 in wide (body only, mirrors folded) — about 16.1 in of total clearance, so roughly 8 in per side.

Garage door height

Clears

72.8 in tall — 11.2 in of headroom before roof rails, antennas, or a roof box are added.

Parking space

Fits a standard stall

205.9 in long leaves 10.1 in to spare in an 18 ft space, and 28.1 in of side clearance in a 9 ft one.

Size drift: the 2026 Mercedes-Benz GLS-Class is 3 in longer than the 2017 car in our records. If you are replacing an older example with a newer one, check the garage clearance again rather than assuming the outgoing car's footprint carries over.

Its wheelbase (123.2 in) accounts for about 60% of overall length. A higher share generally means shorter overhangs — better approach and departure clearance on driveways and ramps, and more cabin space for the same parking footprint.

Want to see it against another vehicle at the same scale? Open the car size comparison tool or check the Mercedes-Benz GLS-Class curb weight to pair footprint with mass.

Frequently Asked Questions About GLS-Class Dimensions

How long is the Mercedes-Benz GLS-Class?

The Mercedes-Benz GLS-Class is 205.118 inches long, 79.9213 inches wide and 71.6535 inches tall. That is roughly 17.1 feet — compare it with your garage depth before buying.

Will the Mercedes-Benz GLS-Class fit in a standard garage?

A standard single-car garage is about 20 feet (240 in) deep and 10 feet (120 in) wide. At 205.118 in long and 79.9213 in wide, the Mercedes-Benz GLS-Class fits with 35 in of room to spare front-to-back. Remember to allow for mirrors and door swing.

How much does the Mercedes-Benz GLS-Class weigh?

Curb weight for the Mercedes-Benz GLS-Class is about 5,754 lbs. Curb weight excludes passengers and cargo, so add roughly 150 lbs per occupant when calculating payload.