AutoSpecData

Mercedes-Benz GLS-Class Transmission

The 2026 Mercedes-Benz GLS-Class uses Automatic 9-spd, Automatic 7-spd transmissions, depending on engine and trim.

Latest model year (2026):

The Mercedes-Benz GLS-Class comes with Automatic 9-spd.

Verifiedfueleconomy.gov · Verified August 11, 2026
OverviewMPGEngine SpecsFuel CostTransmissionDrivetrainVehicle ClassMaintenanceDimensionsCurb Weight

Mercedes-Benz GLS-Class Transmission — All Years

YearTrimEngineTransmissionDriveMPG Comb.
2026Config 1 of 4Auto 9-spd, 6 cyl, 3.0 L6 3.0LAutomatic 9-spdAll-Wheel Drive21
2026Config 2 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LAutomatic 9-spdAll-Wheel Drive16
2026Config 3 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LAutomatic 9-spdAll-Wheel Drive15
2026Config 4 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LAutomatic 9-spdAll-Wheel Drive17
2025Config 1 of 4Auto 9-spd, 6 cyl, 3.0 L6 3.0LAutomatic 9-spdAll-Wheel Drive21
2025Config 2 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LAutomatic 9-spdAll-Wheel Drive15
2025Config 3 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LAutomatic 9-spdAll-Wheel Drive16
2025Config 4 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LAutomatic 9-spdAll-Wheel Drive15
2024Config 1 of 4Auto 9-spd, 6 cyl, 3.0 L6 3.0LAutomatic 9-spdAll-Wheel Drive21
2024Config 2 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LAutomatic 9-spdAll-Wheel Drive16
2024Config 3 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LAutomatic 9-spdAll-Wheel Drive16
2024Config 4 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LAutomatic 9-spdAll-Wheel Drive16
2023Config 1 of 4Auto 9-spd, 6 cyl, 3.0 L6 3.0LAutomatic 9-spdAll-Wheel Drive20
2023Config 2 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LAutomatic 9-spdAll-Wheel Drive16
2023Config 3 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LAutomatic 9-spdAll-Wheel Drive17
2023Config 4 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LAutomatic 9-spdAll-Wheel Drive18
2022Config 1 of 4Auto 9-spd, 6 cyl, 3.0 L6 3.0LAutomatic 9-spd4-Wheel Drive20
2022Config 2 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LAutomatic 9-spdAll-Wheel Drive15
2022Config 3 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LAutomatic 9-spdAll-Wheel Drive18
2022Config 4 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LAutomatic 9-spdAll-Wheel Drive17
2021Config 1 of 4Auto 9-spd, 6 cyl, 3.0 L6 3.0LAutomatic 9-spd4-Wheel Drive21
2021Config 2 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LAutomatic 9-spd4-Wheel Drive18
2021Config 3 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LAutomatic 9-spd4-Wheel Drive16
2021Config 4 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LAutomatic 9-spd4-Wheel Drive16
2020Config 1 of 2Auto 9-spd, 6 cyl, 3.0 L6 3.0LAutomatic 9-spd4-Wheel Drive21
2020Config 2 of 2Auto 9-spd, 8 cyl, 4.0 L8 4.0LAutomatic 9-spd4-Wheel Drive18
2019Config 1 of 3Auto 7-spd, 8 cyl, 5.5 L8 5.5LAutomatic 7-spd4-Wheel Drive15
2019Config 2 of 3Auto 9-spd, 6 cyl, 3.0 L6 3.0LAutomatic 9-spd4-Wheel Drive18
2019Config 3 of 3Auto 9-spd, 8 cyl, 4.7 L8 4.7LAutomatic 9-spd4-Wheel Drive16
2018Config 1 of 3Auto 7-spd, 8 cyl, 5.5 L8 5.5LAutomatic 7-spd4-Wheel Drive15
2018Config 2 of 3Auto 9-spd, 6 cyl, 3.0 L6 3.0LAutomatic 9-spd4-Wheel Drive19
2018Config 3 of 3Auto 9-spd, 8 cyl, 4.7 L8 4.7LAutomatic 9-spd4-Wheel Drive16
2017Config 1 of 3Auto 7-spd, 8 cyl, 5.5 L8 5.5LAutomatic 7-spd4-Wheel Drive14
2017Config 2 of 3Auto 9-spd, 6 cyl, 3.0 L6 3.0LAutomatic 9-spd4-Wheel Drive19
2017Config 3 of 3Auto 9-spd, 8 cyl, 4.7 L8 4.7LAutomatic 9-spd4-Wheel Drive16

Data sourced from fueleconomy.gov (U.S. Department of Energy). MPG figures are EPA-tested. Fuel costs are estimates based on average fuel prices and 15,000 miles/year.

Mercedes-Benz GLS-Class data analysis

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 — 35 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.

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.

Frequently Asked Questions About GLS-Class Transmission

What transmission does the Mercedes-Benz GLS-Class have?

The Mercedes-Benz GLS-Class is offered with Automatic 9-spd, Automatic 7-spd (2026 and earlier model years). Availability depends on engine and trim — see the year-by-year table above.

Does the Mercedes-Benz GLS-Class come with a manual transmission?

No manual transmission is listed for the Mercedes-Benz GLS-Class in the EPA data we track; all listed configurations are automatic or CVT.

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