2023 Mercedes-Benz GLC-Class Coupe Gas Tank Size & Fuel Capacity
Fuel tank capacity
17.4gal · 66 L
The 2023 Mercedes-Benz GLC-Class Coupe has a fuel tank capacity of 17.4 gallons (66 liters) on every trim.
A full tank is good for roughly 418–452 highway miles or 296–348 miles around town, going by the EPA ratings.
17.4 gal · Smaller than 56% of 2023 models we list.
Listed separately: 2023 Mercedes-Benz GLC-Class (17.4 gal).
2023 Mercedes-Benz GLC-Class Coupe fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Engine
- no difference
All 2 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| AMG GLC 43 4dr SUV AWD 3.0L 6cyl Turbo 9A · AWD MPG 17 / 24Range 296 / 418 mi | 3.0L 6cyl Turbo 9A | AWD | 17.4 gal66 L | 17 / 24 | 296 / 418 mi | |
| GLC 300 4MATIC 4dr SUV AWD 2.0L 4cyl Turbo 9A · AWD MPG 20 / 26Range 348 / 452 mi | 2.0L 4cyl Turbo 9A | AWD | 17.4 gal66 L | 20 / 26 | 348 / 452 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 2023 Mercedes-Benz GLC-Class Coupe 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 22 MPG, a full 17.4-gallon tank covers about 383 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 17.4 | 452 | 348 |
| 3/4 | 13.1 | 339 | 261 |
| 1/2 | 8.7 | 226 | 174 |
| 1/4 | 4.4 | 113 | 87 |
| 1/8 | 2.2 | 57 | 44 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 682 gallons, roughly 39 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 2023 Mercedes-Benz GLC-Class Coupe
$91.87 to fill the 17.4-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 |
|---|---|---|---|---|
| 17.4 gal | Premium | $5.28 | $91.87 | $68.90 |
By region, 17.4-gallon tank
| Region | Premium / gal | Fill from empty |
|---|---|---|
| East Coast | $4.93 | $85.78 |
| Midwest | $5.37 | $93.44 |
| Gulf CoastLowest | $4.57 | $79.52 |
| Rocky Mountain | $5.12 | $89.09 |
| West Coast | $6.08 | $105.79 |
| CaliforniaHighest | $6.36 | $110.66 |
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
- 17.4-gallon tank$91.87
- A year of driving (15,000 mi)$3,600
Starts at the US average for premium; type in what your station charges. For other tank sizes, use the fill-up calculator.
GLC-Class Coupe tank size in other years
The 2023 GLC-Class Coupe uses the same 17.4 gal tank as every GLC-Class Coupe since 2017.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2025 GLC-Class Coupe | 16.4–17.4 gal | 539 mi |
| 2024 GLC-Class Coupe | 17.4 gal | 522 mi |
| 2023 GLC-Class Coupe | 17.4 gal | 452 mi |
| 2022 GLC-Class Coupe | 17.4 gal | 487 mi |
| 2021 GLC-Class Coupe | 17.4 gal | 487 mi |
| 2020 GLC-Class Coupe | 17.4 gal | 487 mi |
| 2019 GLC-Class Coupe | 17.4 gal | 470 mi |
| 2018 GLC-Class Coupe | 17.4 gal | 470 mi |
2023 Mercedes-Benz GLC-Class Coupe vs similar 2023 SUVs
At 17.4 gallons, the GLC-Class Coupe's largest tank ranks fifth of the seven 2023 SUVs compared here. The Jaguar F-PACE carries the most (21.9 gal) and the Porsche Macan the least (17.1 gal).
| 2023 model | Tank | Longest highway range |
|---|---|---|
| Jaguar F-PACE | 21.9 gal | 591 mi |
| Volvo XC60 | 18.8 gal | 564 mi |
| Audi Q5 Sportback | 18.5 gal | 537 mi |
| Lexus RX 350 | 17.8 gal | 516 mi |
| Mercedes-Benz GLC-Class Coupe | 17.4 gal | 452 mi |
| BMW X3 | 17.2 gal | 499 mi |
| Porsche Macan | 17.1 gal | 428 mi |
Other 2023 SUVs of a similar size, one model per brand.
Frequently asked questions
What is the fuel tank capacity of the 2023 Mercedes-Benz GLC-Class Coupe?
The 2023 Mercedes-Benz GLC-Class Coupe holds 17.4 gallons (66 liters) on every trim we list.
How many gallons and liters does the 2023 Mercedes-Benz GLC-Class Coupe gas tank hold?
The 2023 Mercedes-Benz GLC-Class Coupe tank holds 66 liters, or 17.4 gallons in US gallons.
How far can a 2023 Mercedes-Benz GLC-Class Coupe go on a full tank?
About 418–452 miles on the highway and 296–348 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 2023 Mercedes-Benz GLC-Class Coupe go on a quarter tank?
About 113 highway miles or 87 in town from the 17.4-gallon tank, which has roughly 4.4 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2023 Mercedes-Benz GLC-Class Coupe take?
Premium unleaded (required). The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2023 Mercedes-Benz GLC-Class Coupe?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 17.4-gallon tank from empty costs $91.87. It ranges from $79.52 in the Gulf Coast to $110.66 in California.
How much does a full tank of gas weigh in a 2023 Mercedes-Benz GLC-Class Coupe?
About 108 pounds for the 17.4-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2023 Mercedes-Benz GLC-Class Coupe have a bigger gas tank than the Jaguar F-PACE?
No. The 2023 Jaguar F-PACE holds up to 21.9 gallons; the 2023 Mercedes-Benz GLC-Class Coupe holds up to 17.4.
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.