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2027 Mercedes-Benz G-Class Specs: MPG, Gas Mileage, Engine Size & Dimensions

2015–2027 model years34 variantsUp to 62 MPG combined
Real-World MPG QuestionsBed Dimensions & Cargo SpaceService Intervals

Mercedes-Benz G-Class maintenance schedule by model year

Verified year-by-year intervals for 2025–2025 are listed on the Mercedes-Benz G-Class maintenance schedule, where you can switch model year in the table.

2027 Mercedes-Benz G-Class Specs at a Glance

The 2027 Mercedes-Benz G-Class gets 15 mpg combined on the 4.0L 4-Wheel Drive configuration, weighs 6,801 lbs, measures 181.9 in long. Every figure below comes from EPA, NHTSA, or manufacturer published data — no estimates.

Combined MPG
15 mpg (14 city / 16 hwy)
Best configuration: 4.0L · 4-Wheel Drive · Automatic 9-spd
Engine
4.0L 8-cyl
4.0L · 4-Wheel Drive · Automatic 9-spd
Curb weight
6,801 lbs
Heaviest recorded configuration: G-CLASS G580 4DR SUV
Length
181.9 in · 78 in wide · 77.6 in tall
Wheelbase
113.8 in

2027 Mercedes-Benz G-Class trims and MPG

TrimEngineTransDriveCityHwyCombined
Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spd4-Wheel Drive141615

Detailed Specifications

MPG & Fuel Economy

MPG for every year and trim

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Engine Specifications

Engine Specs for every year and trim

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Annual Fuel Cost

Fuel Cost for every year and trim

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Transmission Specifications

Transmission for every year and trim

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Drivetrain & Drive Type

Drivetrain for every year and trim

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Vehicle Class & EPA Size Category

Vehicle Class for every year and trim

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Maintenance Schedule & Service Intervals

Maintenance for every year and trim

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Dimensions & Size

Dimensions for every year and trim

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Curb Weight

Curb Weight for every year and trim

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Electric Range & Charging Time

EV Range for every year and trim

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Mercedes-Benz G-Class — All Years Overview

YearTrimEngineTransDriveCityHwyCombinedFuel
2027Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spd4-Wheel Drive141615Premium Gasoline
2026Auto (A2)—Automatic (A2)4-Wheel Drive685662Electricity
2026Auto 9-spd, 6 cyl, 3.0 L6 · 3.0LAutomatic 9-spd4-Wheel Drive171918Premium Gasoline
2026Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spd4-Wheel Drive141615Premium Gasoline
2025Auto (A2)—Automatic (A2)4-Wheel Drive685662Electricity
2025Auto 9-spd, 6 cyl, 3.0 L6 · 3.0LAutomatic 9-spd4-Wheel Drive171918Premium Gasoline
2025Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spd4-Wheel Drive141615Premium Gasoline
2024Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spd4-Wheel Drive131614Premium Gasoline
2024Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spd4-Wheel Drive101211Premium Gasoline
2023Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spd4-Wheel Drive131614Premium Gasoline
2023Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spd4-Wheel Drive101211Premium Gasoline
2022Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spd4-Wheel Drive131614Premium Gasoline
2022Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spd4-Wheel Drive141716Premium Gasoline
2021Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spd4-Wheel Drive131614Premium Gasoline
2021Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spd4-Wheel Drive171918Premium Gasoline
2020Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spd4-Wheel Drive131714Premium Gasoline
2020Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spd4-Wheel Drive131514Premium Gasoline
2019Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spd4-Wheel Drive131714Premium Gasoline
2019Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spd4-Wheel Drive131514Premium Gasoline
2018Auto 7-spd, 12 cyl, 6.0 L12 · 6.0LAutomatic 7-spd4-Wheel Drive111312Premium Gasoline
2018Auto 7-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 7-spd4-Wheel Drive131413Premium Gasoline
2018Auto 7-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 7-spd4-Wheel Drive111111Premium Gasoline
2018Auto 7-spd, 8 cyl, 5.5 L8 · 5.5LAutomatic 7-spd4-Wheel Drive121513Premium Gasoline
2017Auto 7-spd, 12 cyl, 6.0 L12 · 6.0LAutomatic 7-spd4-Wheel Drive111312Premium Gasoline
2017Auto 7-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 7-spd4-Wheel Drive131413Premium Gasoline
2017Auto 7-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 7-spd4-Wheel Drive111111Premium Gasoline
2017Auto 7-spd, 8 cyl, 5.5 L8 · 5.5LAutomatic 7-spd4-Wheel Drive121413Premium Gasoline
2016Auto 7-spd, 12 cyl, 6.0 L12 · 6.0LAutomatic 7-spd4-Wheel Drive111312Premium Gasoline
2016Auto 7-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 7-spd4-Wheel Drive131413Premium Gasoline
2016Auto 7-spd, 8 cyl, 5.5 L8 · 5.5LAutomatic 7-spd4-Wheel Drive121413Premium Gasoline
2015Auto 7-spd, 8 cyl, 5.5 L8 · 5.5LAutomatic 7-spd4-Wheel Drive121413Premium Gasoline
2015Auto 7-spd, 8 cyl, 5.5 L8 · 5.5LAutomatic 7-spd4-Wheel Drive121513Premium Gasoline

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Mercedes-Benz G-Class — Frequently Asked Questions

What is the fuel economy of the 2027 Mercedes-Benz G-Class?

The Mercedes-Benz G-Class is EPA-rated at up to 18 MPG combined (17 city / 19 highway), a historical peak recorded on the 2026 model year.

What engine does the 2027 Mercedes-Benz G-Class have?

The Mercedes-Benz G-Class uses a 4.0L 8-cylinder engine paired with an Automatic 9-spd transmission.

What years of the Mercedes-Benz G-Class are covered here?

This page documents 32 verified Mercedes-Benz G-Class configurations across model years 2015–2027.

Which model year of the Mercedes-Benz G-Class is the most fuel efficient?

The 2026 Mercedes-Benz G-Class holds the highest combined rating at 62 MPG; the 2015 sits lowest at 13 MPG, a difference of 49 MPG (about 377%) across the 13 rated years on file.

How many engine options does the Mercedes-Benz G-Class have?

The records list 4 distinct displacements for the Mercedes-Benz G-Class — 3L, 4L, 5.5L, 6L — which is why combined MPG varies between trims of the same year.

Is the 2027 Mercedes-Benz G-Class front-wheel drive or all-wheel drive?

Every Mercedes-Benz G-Class configuration on record here is 4-Wheel Drive; no alternative drivetrain appears in the 2015–2027 data.

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