2020 Mercedes-Benz AMG® GT Gas Tank Size & Fuel Capacity
Fuel tank capacity
19.8–21.1gal · 75–80 L
The 2020 Mercedes-Benz AMG® GT has a fuel tank capacity of 19.8 to 21.1 gallons (75–80 liters), depending on the trim. The most common size is 19.8 gallons, used on 6 trims.
A full tank is good for roughly 396–506 highway miles or 297–401 miles around town, going by the EPA ratings.
21.1 gal · Bigger than 73% of 2020 models we list.
- By trim
- Gas cap & parts
- Fuel essentials
- Miles per tank
- Fill-up cost
- Other years
- Compared
- Fuel recalls
- FAQ
2020 Mercedes-Benz AMG® GT fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Drive
- Engine
All 9 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| 2dr Convertible 4.0L 8cyl Turbo 7AM · RWD MPG 16 / 22Range 317 / 436 mi | 4.0L 8cyl Turbo 7AM | RWD | 19.8 gal75 L | 16 / 22 | 317 / 436 mi | |
| 2dr Coupe 4.0L 8cyl Turbo 7AM · RWD MPG 16 / 22Range 317 / 436 mi | 4.0L 8cyl Turbo 7AM | RWD | 19.8 gal75 L | 16 / 22 | 317 / 436 mi | |
| C 2dr Convertible 4.0L 8cyl Turbo 7AM · RWD MPG 15 / 20Range 297 / 396 mi | 4.0L 8cyl Turbo 7AM | RWD | 19.8 gal75 L | 15 / 20 | 297 / 396 mi | |
| C 2dr Coupe 4.0L 8cyl Turbo 7AM · RWD MPG 15 / 21Range 297 / 416 mi | 4.0L 8cyl Turbo 7AM | RWD | 19.8 gal75 L | 15 / 21 | 297 / 416 mi | |
| R 2dr Convertible 4.0L 8cyl Turbo 7AM · RWD MPG 15 / 20Range 297 / 396 mi | 4.0L 8cyl Turbo 7AM | RWD | 19.8 gal75 L | 15 / 20 | 297 / 396 mi | |
| R 2dr Coupe 4.0L 8cyl Turbo 7AM · RWD MPG 15 / 20Range 297 / 396 mi | 4.0L 8cyl Turbo 7AM | RWD | 19.8 gal75 L | 15 / 20 | 297 / 396 mi | |
| 53 4dr Sedan AWD 3.0L 6cyl Twincharger mild hybrid 9A · AWD MPG 19 / 24Range 401 / 506 mi | 3.0L 6cyl Twincharger mild hybrid 9A | AWD | 21.1 gal80 L | 19 / 24 | 401 / 506 mi | |
| 63 4dr Sedan AWD 4.0L 8cyl Turbo 9A · AWD MPG 15 / 20Range 317 / 422 mi | 4.0L 8cyl Turbo 9A | AWD | 21.1 gal80 L | 15 / 20 | 317 / 422 mi | |
| 63 S 4dr Sedan AWD 4.0L 8cyl Turbo 9A · AWD MPG 15 / 20Range 317 / 422 mi | 4.0L 8cyl Turbo 9A | AWD | 21.1 gal80 L | 15 / 20 | 317 / 422 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 2020 Mercedes-Benz AMG® GT 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 17 MPG, a full 19.8-gallon tank covers about 337 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 19.8 | 396 | 297 |
| 3/4 | 14.9 | 297 | 223 |
| 1/2 | 9.9 | 198 | 149 |
| 1/4 | 5.0 | 99 | 74 |
| 1/8 | 2.5 | 50 | 37 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 882 gallons, roughly 45 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.
- EPA combined
- 17–18 MPG
- Tailpipe CO2
- 488–526 g/mi
- EPA greenhouse score
- 3 of 10
- Gas guzzler tax
- Yes
- Source
- EPA ratings
What it costs to fill up a 2020 Mercedes-Benz AMG® GT
$104.54 to fill the 19.8-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 |
|---|---|---|---|---|
| 19.8 gal | Premium | $5.28 | $104.54 | $78.41 |
| 21.1 gal | Premium | $5.28 | $111.41 | $83.56 |
By region, 19.8-gallon tank
| Region | Premium / gal | Fill from empty |
|---|---|---|
| East Coast | $4.93 | $97.61 |
| Midwest | $5.37 | $106.33 |
| Gulf CoastLowest | $4.57 | $90.49 |
| Rocky Mountain | $5.12 | $101.38 |
| West Coast | $6.08 | $120.38 |
| CaliforniaHighest | $6.36 | $125.93 |
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
- 19.8-gallon tank$104.54
- 21.1-gallon tank$111.41
- A year of driving (15,000 mi)$4,659
Starts at the US average for premium; type in what your station charges. For other tank sizes, use the fill-up calculator.
AMG® GT tank size in other years
The tank changed for 2020: 19.8–21.1 gal, up from 17.4–19.8 gal on the 2019 AMG® GT.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2025 AMG® GT | 18.5–21.1 gal | 506 mi |
| 2024 AMG® GT | 18.5–21.1 gal | 506 mi |
| 2023 AMG® GT | 21.1 gal | 506 mi |
| 2022 AMG® GT | 21.1 gal | 528 mi |
| 2021 AMG® GT | 19.8–21.1 gal | 528 mi |
| 2020 AMG® GT | 19.8–21.1 gal | 506 mi |
| 2019 AMG® GT | 17.4–19.8 gal | 436 mi |
| 2018 AMG® GT | 19.8 gal | 436 mi |
| 2017 AMG® GT | 19.8 gal | 436 mi |
| 2016 AMG® GT | 19.8 gal | 436 mi |
2020 Mercedes-Benz AMG® GT vs similar 2020 coupes
The AMG® GT has the largest tank of the three 2020 coupes compared here, 21.1 gallons against 15.8 for the BMW M4.
| 2020 model | Tank | Longest highway range |
|---|---|---|
| Mercedes-Benz AMG® GT | 19.8–21.1 gal | 506 mi |
| BMW M4 | 15.8 gal | 395 mi |
| Audi S5 | 15.3 gal | 413 mi |
Other 2020 coupes of a similar size, one model per brand.
2020 Mercedes-Benz AMG® GT fuel system recalls
None of the 12 recalls NHTSA lists for the 2020 Mercedes-Benz AMG® GT involve the fuel system.
Frequently asked questions
What is the fuel tank capacity of the 2020 Mercedes-Benz AMG® GT?
The 2020 Mercedes-Benz AMG® GT holds between 19.8 and 21.1 gallons, depending on the trim. 19.8 gallons is the usual size; the 21.1-gallon tank comes on the 53 4dr Sedan AWD (3.0L 6cyl Twincharger mild hybrid 9A).
How many gallons and liters does the 2020 Mercedes-Benz AMG® GT gas tank hold?
The 2020 Mercedes-Benz AMG® GT tank holds 75–80 liters, or 19.8–21.1 gallons in US gallons.
Which 2020 Mercedes-Benz AMG® GT has the biggest gas tank?
The 21.1-gallon tank is on the 53 4dr Sedan AWD, 63 4dr Sedan AWD, 63 S 4dr Sedan AWD. The smallest tank, 19.8 gallons, is on the 2dr Convertible.
Does AWD change the 2020 Mercedes-Benz AMG® GT gas tank?
Yes. RWD: 19.8 gal; AWD: 21.1 gal.
How far can a 2020 Mercedes-Benz AMG® GT go on a full tank?
About 396–506 miles on the highway and 297–401 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 2020 Mercedes-Benz AMG® GT go on a quarter tank?
About 99 highway miles or 74 in town from the 19.8-gallon tank, which has roughly 5.0 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2020 Mercedes-Benz AMG® GT take?
Premium unleaded (required). The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2020 Mercedes-Benz AMG® GT?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 19.8-gallon tank from empty costs $104.54. It ranges from $90.49 in the Gulf Coast to $125.93 in California.
How much does a full tank of gas weigh in a 2020 Mercedes-Benz AMG® GT?
About 131 pounds for the 21.1-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2020 Mercedes-Benz AMG® GT have a bigger gas tank than the BMW M4?
Yes. The 2020 Mercedes-Benz AMG® GT holds up to 21.1 gallons; the 2020 BMW M4 holds up to 15.8.
Has the 2020 Mercedes-Benz AMG® GT had a fuel pump or fuel system recall?
No. None of the 12 recalls NHTSA lists for the 2020 Mercedes-Benz AMG® GT involve the fuel system.
Sources
- Tank sizes: manufacturer-rated capacities from US-market specifications, checked against independent references. Updated October 2026.
- MPG and range: EPA ratings (fueleconomy.gov). Range is tank size times EPA MPG.
- Fuel prices: U.S. Energy Information Administration, week of October 26, 2026 (this week's prices).
- Recalls: NHTSA recall database (Mercedes-Benz fuel system recalls).
Does your owner's manual say something different? Let us know and we'll fix it. More on how we check the numbers.