2027 Mercedes-Benz GLC Coupe Gas Tank Size & Fuel Capacity
Fuel tank capacity
16.4–17.4gal · 62–66 L
The 2027 Mercedes-Benz GLC Coupe has a fuel tank capacity of 16.4 to 17.4 gallons (62–66 liters), depending on the trim. The most common size is 17.4 gallons, used on 1 trim.
A full tank is good for roughly 539 highway miles or 400 miles around town, going by the EPA ratings.
17.4 gal · Smaller than 70% of 2027 models we list.
Listed separately: 2027 Mercedes-Benz GLC (13.0–17.4 gal).
2027 Mercedes-Benz GLC Coupe fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Engine
All 2 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| AMG GLC 53 4MATIC+ 4dr SUV AWD 3.0L 6cyl Twincharger mild hybrid 9A · AWD | 3.0L 6cyl Twincharger mild hybrid 9A | AWD | 16.4 gal62 L | Not rated | Not rated | |
| GLC 300 4MATIC 4dr SUV AWD 2.0L 4cyl Turbo mild hybrid 9A · AWD MPG 23 / 31Range 400 / 539 mi | 2.0L 4cyl Turbo mild hybrid 9A | AWD | 17.4 gal66 L | 23 / 31 | 400 / 539 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.Trims marked "Not rated" have no published EPA rating.
How far a 2027 Mercedes-Benz GLC 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 26 MPG, a full 17.4-gallon tank covers about 452 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 17.4 | 539 | 400 |
| 3/4 | 13.1 | 405 | 300 |
| 1/2 | 8.7 | 270 | 200 |
| 1/4 | 4.4 | 135 | 100 |
| 1/8 | 2.2 | 67 | 50 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 577 gallons, roughly 33 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 2027 Mercedes-Benz GLC 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 |
|---|---|---|---|---|
| 16.4 gal | Premium | $5.28 | $86.59 | $64.94 |
| 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
- 16.4-gallon tank$86.59
- 17.4-gallon tank$91.87
- A year of driving (15,000 mi)$3,046
Starts at the US average for premium; type in what your station charges. For other tank sizes, use the fill-up calculator.
GLC Coupe tank size in other years
The 2027 GLC Coupe uses the same 16.4–17.4 gal tank sizes as the 2026 model.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2027 GLC Coupe | 16.4–17.4 gal | 539 mi |
| 2026 GLC Coupe | 16.4–17.4 gal | 539 mi |
2027 Mercedes-Benz GLC Coupe vs similar 2027 SUVs
At 17.4 gallons, the GLC Coupe's largest tank ranks fourth of the five 2027 SUVs compared here. The Audi Q8 carries the most (22.5 gal) and the Genesis GV70 the least (17.4 gal).
| 2027 model | Tank | Longest highway range |
|---|---|---|
| Audi Q8 | 22.5 gal | 518 mi |
| BMW X6 | 21.9 gal | 569 mi |
| Volvo XC90 | 18.8 gal | 545 mi |
| Mercedes-Benz GLC Coupe | 16.4–17.4 gal | 539 mi |
| Genesis GV70 | 17.4 gal | 452 mi |
Other 2027 SUVs of a similar size, one model per brand.
Frequently asked questions
What is the fuel tank capacity of the 2027 Mercedes-Benz GLC Coupe?
The 2027 Mercedes-Benz GLC Coupe holds between 16.4 and 17.4 gallons, depending on the trim. 17.4 gallons is the usual size; the smaller 16.4-gallon tank is on the AMG GLC 53 4MATIC+ 4dr SUV AWD.
How many gallons and liters does the 2027 Mercedes-Benz GLC Coupe gas tank hold?
The 2027 Mercedes-Benz GLC Coupe tank holds 62–66 liters, or 16.4–17.4 gallons in US gallons.
Which 2027 Mercedes-Benz GLC Coupe has the biggest gas tank?
The 17.4-gallon tank is on the GLC 300 4MATIC 4dr SUV AWD. The smallest tank, 16.4 gallons, is on the AMG GLC 53 4MATIC+ 4dr SUV AWD.
How far can a 2027 Mercedes-Benz GLC Coupe go on a full tank?
About 539 miles on the highway and 400 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 2027 Mercedes-Benz GLC Coupe go on a quarter tank?
About 135 highway miles or 100 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 2027 Mercedes-Benz GLC 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 2027 Mercedes-Benz GLC 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 2027 Mercedes-Benz GLC Coupe?
About 108 pounds for the 17.4-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2027 Mercedes-Benz GLC Coupe have a bigger gas tank than the Volvo XC90?
No. The 2027 Volvo XC90 holds up to 18.8 gallons; the 2027 Mercedes-Benz GLC 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.