Fuel Economy - MBWorld.org Forums

Aug 13, 2019 | 11:11 AM

DM335

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Joined: Nov 2012

Posts: 97

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From: Kansas City

2024 GLS 450

Fuel Economy

The EPA estimates for the 2020 GLS450 are now published on the government's fueleconomy.gov site. The new model will be rated at 19 city/23 highway for a combined 21 mpg. Ratings for the previous model seem to have changed over the years. The 2019 GLS450 was 16/22/18 and my 2015 GL450 was 17/21/19. In general, it looks like the new powertrain will get an extra 2-3 mpg, thanks to the new engine and the new 48-volt system.

Aug 13, 2019 | 06:22 PM

GregW / Oregon

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Joined: Jul 2003

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From: Lake Oswego, OR

2020 GLE 450; 2023 BMW M2 Coupe

Fuel economy

Quote:

Originally Posted by DM335

Unsurprisingly, the GLS's 19/23/21 is almost identical to the GLE's 19/24/21. I got 24.5 mpg on 360 mi. trip last weekend in our GLE 450 doing 70 or greater a good part of the time. ECO mode allows some coasting (Glide mode) with the engine off, but it doesn't seem to make that much difference.