5 Current Mercedes Models With The Worst Gas Mileage
Luxury and performance often equate to high fuel consumption, as is the case with these amazing beasts of the 2023 model year.
Mercedes-AMG SL55 / SL63 - 14/21 MPG (16 Combined)
Mercedes-Benz revitalized the SL nameplate with the latest SL 63 and SL 55 models, bringing some much-needed bravado to the legendary roadster lineage. After a short hiatus since the discontinuation of the R231 model in 2020, the Mercedes SL was reintroduced as an AMG-only model for 2022. The gorgeous new convertible is powered by the brand's proven 4.0-liter twin-turbo V8, producing 469 horses for the SL 55 and 577 for the SL 63. The powerful engine yields a combined fuel economy of 16 MPG in both applications.
Mercedes-AMG GLS63 4Matic Plus - 14/19 (16 Combined)
It's hard to believe that a 2+2 roadster and a 3-row full-size SUV can have the same EPA-estimated fuel economy. But the Mercedes-AMG GLS 63 4Matic Plus also has a combined fuel economy of 16 MPG combined. The highway mileage is understandably lower than the SL, though, due to the big SUV's significantly larger frontal area.
Mercedes Maybach S680 - 12/20 MPG (14 Combined)
Unlike all the other vehicles on this list, which boasts 4.0-liter V8s, the Mercedes-Maybach S680 is powered by a 12-cylinder 6-liter motor. Given the fact that this Maybach is designed as the ultimate luxury vehicle, the smooth operator that is the twin-turbo V12 is a natural powertrain of choice. Of course, that also leads to relatively high fuel consumption, 12 in the city and 20 MPG on the highway in this case.
Mercedes-AMG G63 / Mercedes-Benz G550 - 13/16 MPG (14 Combined)
Unsurprising to anyone, the G63 and G550 are close to the top of this list. The heavy and un-aerodynamic stature of the G-Wagen combined with the powerful V8s under the hood results in a fuel economy of 14 MPG combined. And it can only be topped by another, heavier, and less aerodynamic version of the G-Wagen itself...
Mercedes-AMG G63 4x4 Squared 10/12 MPG (11 Combined)
With as much frontal surface area as Mercedes-Benz offers in their lineup, the G63 4x4 Squared is the ultimate off-roader for those who dare to take the near $400K truck off the grid. And the 585-horsepower V8 achieves a fuel economy of 11 MPG combined, as rated by the EPA.
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