2018 Mercedes-Benz GLS-Class Specs, MPG & Trims
EPA fuel-economy data and specifications for the 2018 Mercedes-Benz GLS-Class (15–19 MPG combined) across 3 listed configurations.
Overview
- Body class
- Standard Sport Utility Vehicle 4WD
- Drive
- 4-Wheel Drive
- Engine
- 6-cyl, 3.0 L; 8-cyl, 4.7 L; 8-cyl, 5.5 L
- Fuel type
- Premium Gasoline
- Combined MPG
- 15–19 MPG
- Annual fuel cost
- $4,350–$5,500
- Configurations
- 3
MPG & fuel economy
City, highway and combined values below are EPA estimates. Where a powertrain has several configurations, the table shows the lowest–highest reported value. Electric configurations use MPGe.
| Powertrain | City | Highway | Combined | Annual fuel cost | CO2 |
|---|---|---|---|---|---|
| 6-cyl 3.0 L · Premium Gasoline · 4-Wheel Drive | 17 | 22 | 19 | $4,350 | 477 g/mi |
| 8-cyl 4.7 L · Premium Gasoline · 4-Wheel Drive | 14 | 19 | 16 | $5,150 | 556 g/mi |
| 8-cyl 5.5 L · Premium Gasoline · 4-Wheel Drive | 13 | 18 | 15 | $5,500 | 591 g/mi |
Configurations & engine comparison
Each row is one configuration/engine combination reported by the EPA for this model year. Missing EPA values are shown as —.
| Configuration / engine | Drive | Transmission | Cyl. | Displ. (L) | Fuel type | City | Hwy | Comb. | Annual cost |
|---|---|---|---|---|---|---|---|---|---|
| AMG GLS63 | 4-Wheel Drive | Automatic 7-spd | 8 | 5.5 | Premium Gasoline | 13 | 18 | 15 | $5,500 |
| GLS450 4matic | 4-Wheel Drive | Automatic 9-spd | 6 | 3.0 | Premium Gasoline | 17 | 22 | 19 | $4,350 |
| GLS550 4matic | 4-Wheel Drive | Automatic 9-spd | 8 | 4.7 | Premium Gasoline | 14 | 19 | 16 | $5,150 |
Frequently asked questions
What is the combined MPG of the 2018 Mercedes-Benz GLS-Class?
According to EPA data, the 2018 Mercedes-Benz GLS-Class is rated at 15–19 MPG combined for its conventional-fuel configurations.
How many cylinders does the 2018 Mercedes-Benz GLS-Class have?
The EPA data lists 6 and 8 cylinders across its configurations.
What fuel type does the 2018 Mercedes-Benz GLS-Class use?
It uses Premium Gasoline.
What is the annual fuel cost of the 2018 Mercedes-Benz GLS-Class?
The EPA estimates annual fuel costs ranging from $4,350 to $5,500.