2025 Mercedes-Benz Maybach GLS Gas Tank Size & Fuel Capacity
Fuel tank capacity
23.8gal · 90 L
The 2025 Mercedes-Benz Maybach GLS has a fuel tank capacity of 23.8 gallons (90 liters).
A full tank is good for roughly 428 highway miles or 309 miles around town, going by the EPA ratings.
23.8 gal · Bigger than 87% of 2025 models we list.
Listed separately: 2025 Mercedes-Benz Maybach (22.2 gal).
2025 Mercedes-Benz Maybach GLS fuel tank capacity by trim
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| GLS 600 4dr SUV AWD 4.0L 8cyl Turbo mild hybrid 9A · AWD MPG 13 / 18Range 309 / 428 mi | 4.0L 8cyl Turbo mild hybrid 9A | AWD | 23.8 gal90 L | 13 / 18 | 309 / 428 mi | |
| No trim matches all of these filters. | ||||||
Tank figures are the manufacturer's rated capacity, sorted smallest tank first. Range is tank size times EPA city or highway MPG.
How far a 2025 Mercedes-Benz Maybach GLS goes on a tank
Gallons left and the distance they cover at each mark on the fuel gauge, at EPA city and highway mileage. At the combined rating of 15 MPG, a full 23.8-gallon tank covers about 357 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 23.8 | 428 | 309 |
| 3/4 | 17.9 | 321 | 232 |
| 1/2 | 11.9 | 214 | 155 |
| 1/4 | 6.0 | 107 | 77 |
| 1/8 | 3.0 | 54 | 39 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 1,000 gallons, roughly 42 full tanks.
Fuel gauges aren't perfectly linear and the low-fuel light comes on with a few gallons still in the tank, so plan your stop before the last eighth.
What it costs to fill up a 2025 Mercedes-Benz Maybach GLS
$125.66 to fill the 23.8-gallon tank from empty with premium, at this week's US average of $5.28 a gallon.
| Tank | Fuel | US avg / gal | From empty | From 1/4 tank |
|---|---|---|---|---|
| 23.8 gal | Premium | $5.28 | $125.66 | $94.25 |
By region, 23.8-gallon tank
| Region | Premium / gal | Fill from empty |
|---|---|---|
| East Coast | $4.93 | $117.33 |
| Midwest | $5.37 | $127.81 |
| Gulf CoastLowest | $4.57 | $108.77 |
| Rocky Mountain | $5.12 | $121.86 |
| West Coast | $6.08 | $144.70 |
| CaliforniaHighest | $6.36 | $151.37 |
Prices: U.S. Energy Information Administration retail averages for the week of October 26, 2026. This week's prices by state and city.
Your own price
- 23.8-gallon tank$125.66
- A year of driving (15,000 mi)$5,280
Starts at the US average for premium; type in what your station charges. For other tank sizes, use the fill-up calculator.
Maybach GLS tank size in other years
The 2025 Maybach GLS uses the same 23.8 gal tank as every Maybach GLS since 2021.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2026 Maybach GLS | 23.8 gal | 428 mi |
| 2025 Maybach GLS | 23.8 gal | 428 mi |
| 2024 Maybach GLS | 23.8 gal | 452 mi |
| 2023 Maybach GLS | 23.8 gal | 476 mi |
| 2022 Maybach GLS | 23.8 gal | 476 mi |
| 2021 Maybach GLS | 23.8 gal | 452 mi |
2025 Mercedes-Benz Maybach GLS vs similar 2025 SUVs
At 23.8 gallons, the Maybach GLS's largest tank ranks second of the six 2025 SUVs compared here. The Cadillac Escalade carries the most (24.0 gal) and the BMW XM the least (18.2 gal).
| 2025 model | Tank | Longest highway range |
|---|---|---|
| Cadillac Escalade | 24.0 gal | 456 mi |
| Mercedes-Benz Maybach GLS | 23.8 gal | 428 mi |
| Land Rover Range Rover | 18.9–23.8 gal | 571 mi |
| Audi RS Q8 | 22.5 gal | 450 mi |
| Lexus LX | 17.9–21.1 gal | 464 mi |
| BMW XM | 18.2 gal | 309 mi |
Other 2025 SUVs of a similar size, one model per brand.
Frequently asked questions
What is the fuel tank capacity of the 2025 Mercedes-Benz Maybach GLS?
The 2025 Mercedes-Benz Maybach GLS holds 23.8 gallons (90 liters).
How many gallons and liters does the 2025 Mercedes-Benz Maybach GLS gas tank hold?
The 2025 Mercedes-Benz Maybach GLS tank holds 90 liters, or 23.8 gallons in US gallons.
How far can a 2025 Mercedes-Benz Maybach GLS go on a full tank?
About 428 miles on the highway and 309 miles in town, going from full to empty at its EPA ratings. Expect less in practice, since nobody runs the tank dry.
How many miles can a 2025 Mercedes-Benz Maybach GLS go on a quarter tank?
About 107 highway miles or 77 in town from the 23.8-gallon tank, which has roughly 6.0 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2025 Mercedes-Benz Maybach GLS take?
Premium unleaded (required). The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2025 Mercedes-Benz Maybach GLS?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 23.8-gallon tank from empty costs $125.66. It ranges from $108.77 in the Gulf Coast to $151.37 in California.
How much does a full tank of gas weigh in a 2025 Mercedes-Benz Maybach GLS?
About 148 pounds for the 23.8-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2025 Mercedes-Benz Maybach GLS have a bigger gas tank than the BMW XM?
Yes. The 2025 Mercedes-Benz Maybach GLS holds up to 23.8 gallons; the 2025 BMW XM holds up to 18.2.
Sources
- Tank sizes: manufacturer-rated capacities from US-market specifications, checked against independent references. Updated October 2026.
- MPG and range: EPA ratings. Range is tank size times EPA MPG.
- Fuel prices: U.S. Energy Information Administration, week of October 26, 2026 (this week's prices).
Does your owner's manual say something different? Let us know and we'll fix it. More on how we check the numbers.