2017 · Midsize & Large SUV · Gas
2017 Mercedes-Benz GLS-Class MPG & fuel economy
The 2017 Mercedes-Benz GLS-Class is a midsize or large SUV offered in 3 EPA-rated configurations. The most efficient version returns 19 MPG combined (17 city / 22 highway) on premium gasoline. Across the lineup, combined ratings range from 14 to 19 MPG. Among 44 midsize & large SUVs rated for 2017, it ranks 38th for lowest fuel cost. At 15,000 miles a year with $3.95/gal premium gas, it costs about $3,118 a year to fuel.
What will it cost you?
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Fuel average
The 2017 Mercedes-Benz GLS-Class's fuel average is 8.1 km/L (12.4 L/100 km), or 19 MPG combined: 7.2 km/L in the city and 9.4 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 17 | 7.2 | 13.8 |
| Highway | 22 | 9.4 | 10.7 |
| Combined | 19 | 8.1 | 12.4 |
How it ranks among 2017 Midsize & Large SUVs
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
GLS-Class MPG across model years
Full history →3 EPA-rated configurations
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| 4WD · 3.0L 6-cyl turbo · 9-speed automatic GLS450 4matic |
Gas | 17 MPG | 22 MPG | 19 MPG | — | $3,118 |
| 4WD · 4.7L 8-cyl turbo · 9-speed automatic GLS550 4matic |
Gas | 14 MPG | 18 MPG | 16 MPG | — | $3,703 |
| 4WD · 5.5L 8-cyl turbo · 7-speed automatic AMG GLS63 |
Gas | 13 MPG | 17 MPG | 14 MPG | — | $4,232 |
Specs (most efficient configuration)
- Fuel
- Premium gasoline
- Engine / motor
- 3.0L 6-cyl turbo
- Transmission
- 9-speed automatic
- Drivetrain
- 4WD
- Tailpipe CO₂
- 477 g/mi
- EPA fuel economy score
- 4/10
- EPA greenhouse gas score
- 4/10
2017 Mercedes-Benz GLS-Class vs. rivals
Compare the 2017 GLS-Class
With any other car from any year, including other GLS-Class model years. Type a year to jump, e.g. "2015 Accord".
Frequently asked questions
What is the gas mileage of the 2017 Mercedes-Benz GLS-Class?
Up to 19 MPG combined (17 city / 22 highway); ratings range from 14 to 19 MPG depending on configuration.
What fuel does the 2017 Mercedes-Benz GLS-Class use?
Premium gasoline (premium is required or recommended by the manufacturer).
What is the fuel average in km/L for the 2017 Mercedes-Benz GLS-Class?
The 2017 Mercedes-Benz GLS-Class's fuel average is 8.1 km/L (12.4 L/100 km), or 19 MPG combined: 7.2 km/L in the city and 9.4 km/L on the highway.
How much does it cost to fuel the 2017 Mercedes-Benz GLS-Class per year?
About $3,118 at 15,000 miles a year with $3.95/gal premium gas, or $20.79 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.