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Mercedes-Benz GLS 450 Gas Mileage (2017 - 2025): Fuel Economy Data

Researched By The AutoPadre Research Team


The Mercedes-Benz GLS 450 gas mileage is 19 to 22 miles per gallon as specified in our data below, organized by trim, option package, and model year.


For example, the 2019 Mercedes-Benz GLS 450 trim model has a combined gas mileage of 19 miles per gallon, while the 2025 Mercedes-Benz GLS 450 4MATIC has a combined gas mileage of 22 miles per gallon.


In the city, the GLS 450 gas mileage is 16 to 19 miles per gallon depending on the trim and model year.

On the highway, the GLS 450 gas mileage is 22 to 24 miles per gallon depending on the trim and model year.

Note: The gas mileage shown for hybrid vehicles is the miles per gallon equivalent.

Check out the Gas Mileage specifications for other makes and models.

Jump To Model Year

2025 Mercedes-Benz GLS 450 Gas Mileage

The 2025 Mercedes-Benz GLS 450 gas mileage is 22 miles per gallon combined.

In the city, the 2025 GLS 450 gas mileage is 19 miles per gallon.

On the highway, the 2025 GLS 450 gas mileage is 24 miles per gallon.

2025 Mercedes-Benz GLS 450 Gas Mileage (Imperial)
Trim Engine | Transmission | Drivetrain City | Highway | Combined Mileage
4MATIC Hybrid 3.0L | Turbo | 6 Cyl. | Hybrid | 9 Spd Auto w/OD | AWD 19 city mpg | 24 hwy mpg | 22 combined mpg
2025 Mercedes-Benz GLS 450 Gas Mileage (Metric)
Trim Engine | Transmission | Drivetrain City | Highway | Combined Mileage
4MATIC Hybrid 3.0L | Turbo | 6 Cyl. | Hybrid | 9 Spd Auto w/OD | AWD 12.4 city L/100 km | 9.8 hwy L/100 km | 10.7 combined L/100 km

2020 Mercedes-Benz GLS 450 Gas Mileage

The 2020 Mercedes-Benz GLS 450 gas mileage is 21 miles per gallon combined.

In the city, the 2020 GLS 450 gas mileage is 19 miles per gallon.

On the highway, the 2020 GLS 450 gas mileage is 23 miles per gallon.

2020 Mercedes-Benz GLS 450 Gas Mileage (Imperial)
Trim Engine | Transmission | Drivetrain City | Highway | Combined Mileage
SUV 3.0L | Intercooled Turbo | I6 | 9 Spd Auto w/OD | AWD 19 city mpg | 23 hwy mpg | 21 combined mpg
GLS 450 4MATIC SUV 3.0L | Intercooled Turbo | I6 | 9 Spd Auto w/OD | AWD 19 city mpg | 23 hwy mpg | 21 combined mpg
2020 Mercedes-Benz GLS 450 Gas Mileage (Metric)
Trim Engine | Transmission | Drivetrain City | Highway | Combined Mileage
SUV 3.0L | Intercooled Turbo | I6 | 9 Spd Auto w/OD | AWD 12.0 city L/100 km | 10.0 hwy L/100 km | 11.0 combined L/100 km
GLS 450 4MATIC SUV 3.0L | Intercooled Turbo | I6 | 9 Spd Auto w/OD | AWD 12.0 city L/100 km | 10.0 hwy L/100 km | 11.0 combined L/100 km

2019 Mercedes-Benz GLS 450 Gas Mileage

The 2019 Mercedes-Benz GLS 450 gas mileage is 19 miles per gallon combined.

In the city, the 2019 GLS 450 gas mileage is 16 miles per gallon.

On the highway, the 2019 GLS 450 gas mileage is 22 miles per gallon.

2019 Mercedes-Benz GLS 450 Gas Mileage (Imperial)
Trim Engine | Transmission | Drivetrain City | Highway | Combined Mileage
SUV 3.0L | Twin Turbo | V6 | 9 Spd Auto w/OD | AWD 16 city mpg | 22 hwy mpg | 19 combined mpg
GLS 450 4MATIC SUV 3.0L | Twin Turbo | V6 | 9 Spd Auto w/OD | AWD 16 city mpg | 22 hwy mpg | 19 combined mpg
2019 Mercedes-Benz GLS 450 Gas Mileage (Metric)
Trim Engine | Transmission | Drivetrain City | Highway | Combined Mileage
SUV 3.0L | Twin Turbo | V6 | 9 Spd Auto w/OD | AWD 15.0 city L/100 km | 11.0 hwy L/100 km | 12.0 combined L/100 km
GLS 450 4MATIC SUV 3.0L | Twin Turbo | V6 | 9 Spd Auto w/OD | AWD 15.0 city L/100 km | 11.0 hwy L/100 km | 12.0 combined L/100 km

2018 Mercedes-Benz GLS 450 Gas Mileage

The 2018 Mercedes-Benz GLS 450 gas mileage is 19.5 miles per gallon combined.

In the city, the 2018 GLS 450 gas mileage is 17 miles per gallon.

On the highway, the 2018 GLS 450 gas mileage is 22 miles per gallon.

2018 Mercedes-Benz GLS 450 Gas Mileage (Imperial)
Trim Engine | Transmission | Drivetrain City | Highway | Combined Mileage
SUV 3.0L | Twin Turbo | V6 | 9 Spd Auto w/OD | AWD 17 city mpg | 22 hwy mpg | 19.5 combined mpg
2018 Mercedes-Benz GLS 450 Gas Mileage (Metric)
Trim Engine | Transmission | Drivetrain City | Highway | Combined Mileage
SUV 3.0L | Twin Turbo | V6 | 9 Spd Auto w/OD | AWD 14.0 city L/100 km | 11.0 hwy L/100 km | 12.0 combined L/100 km

2017 Mercedes-Benz GLS 450 Gas Mileage

The 2017 Mercedes-Benz GLS 450 gas mileage is 20.5 miles per gallon combined.

In the city, the 2017 GLS 450 gas mileage is 19 miles per gallon.

On the highway, the 2017 GLS 450 gas mileage is 22 miles per gallon.

2017 Mercedes-Benz GLS 450 Gas Mileage (Imperial)
Trim Engine | Transmission | Drivetrain City | Highway | Combined Mileage
SUV 3.0L | Twin Turbo | V6 | 9 Spd Auto w/OD | AWD 19 city mpg | 22 hwy mpg | 20.5 combined mpg
2017 Mercedes-Benz GLS 450 Gas Mileage (Metric)
Trim Engine | Transmission | Drivetrain City | Highway | Combined Mileage
SUV 3.0L | Twin Turbo | V6 | 9 Spd Auto w/OD | AWD 12.0 city L/100 km | 11.0 hwy L/100 km | 11.0 combined L/100 km
Mercedes-Benz GLS 450 Gas Mileage Data Brought To You By AutoPadre
Mercedes-Benz GLS 450 Gas Mileage Data Brought To You By AutoPadre