What gas does the 2020 Mercedes-Benz GLS-Class take?
The EPA rates every 2020 Mercedes-Benz GLS-Class engine on premium gasoline - Mercedes-Benz recommends or requires premium, and the label inside the fuel door says which.
Key takeaways
- 2 EPA-certified configurations listed for the 2020 Mercedes-Benz GLS-Class.
- Rated on premium: if the owner's manual says premium required, use premium; if it says recommended, regular works with some loss of power and economy.
- None of the listed engines is flex-fuel, so do not use E85.
| Engine | Transmission | Drive | Rated fuel | E85 |
|---|---|---|---|---|
| 3.0L 6-cylinder turbo hybrid mild hybrid | 9-speed automatic | 4WD | premium gasoline | No |
| 4.0L 8-cylinder turbo hybrid mild hybrid | 9-speed automatic | 4WD | premium gasoline | No |
Source: U.S. EPA / DOE fuel economy data (fueleconomy.gov). Each row is one certified configuration; a trim or option not sold in a configuration is not listed.
Useful for the 2020 Mercedes-Benz GLS-Class
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