2020 Lexus GS F Gas Tank Size & Fuel Capacity
Fuel tank capacity
17.4gal · 66 L
The 2020 Lexus GS F has a fuel tank capacity of 17.4 gallons (66 liters).
A full tank is good for roughly 418 highway miles or 278 miles around town, going by the EPA ratings.
17.4 gal · Smaller than 54% of 2020 models we list.
2020 Lexus GS F fuel tank capacity by trim
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| 4dr Sedan 5.0L 8cyl 8A · RWD MPG 16 / 24Range 278 / 418 mi | 5.0L 8cyl 8A | RWD | 17.4 gal66 L | 16 / 24 | 278 / 418 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 Lexus GS F 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 19 MPG, a full 17.4-gallon tank covers about 331 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 17.4 | 418 | 278 |
| 3/4 | 13.1 | 313 | 209 |
| 1/2 | 8.7 | 209 | 139 |
| 1/4 | 4.4 | 104 | 70 |
| 1/8 | 2.2 | 52 | 35 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 789 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
- 19 MPG
- Tailpipe CO2
- 472 g/mi
- EPA greenhouse score
- 3 of 10
- Source
- EPA ratings
What it costs to fill up a 2020 Lexus GS F
$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)$4,168
Starts at the US average for premium; type in what your station charges. For other tank sizes, use the fill-up calculator.
GS F tank size in other years
The 2020 GS F uses the same 17.4 gal tank as every GS F since 2016.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2020 GS F | 17.4 gal | 418 mi |
| 2019 GS F | 17.4 gal | 418 mi |
| 2018 GS F | 17.4 gal | 418 mi |
| 2017 GS F | 17.4 gal | 418 mi |
| 2016 GS F | 17.4 gal | 418 mi |
2020 Lexus GS F vs similar 2020 sedans
At 17.4 gallons, the GS F's largest tank ranks third of the six 2020 sedans compared here. The Mercedes-Benz CLS-Class carries the most (21.1 gal) and the Genesis G70 the least (15.8 gal).
| 2020 model | Tank | Longest highway range |
|---|---|---|
| Mercedes-Benz CLS-Class | 21.1 gal | 654 mi |
| Audi A6 | 19.3 gal | 618 mi |
| Lexus GS F | 17.4 gal | 418 mi |
| Acura TLX | 17.2 gal | 568 mi |
| Volvo S60 | 14.5–15.9 gal | 525 mi |
| Genesis G70 | 15.8 gal | 474 mi |
Other 2020 sedans of a similar size, one model per brand.
Frequently asked questions
What is the fuel tank capacity of the 2020 Lexus GS F?
The 2020 Lexus GS F holds 17.4 gallons (66 liters).
How many gallons and liters does the 2020 Lexus GS F gas tank hold?
The 2020 Lexus GS F tank holds 66 liters, or 17.4 gallons in US gallons.
How far can a 2020 Lexus GS F go on a full tank?
About 418 miles on the highway and 278 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 Lexus GS F go on a quarter tank?
About 104 highway miles or 70 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 2020 Lexus GS F 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 Lexus GS F?
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 2020 Lexus GS F?
About 108 pounds for the 17.4-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2020 Lexus GS F have a bigger gas tank than the Audi A6?
No. The 2020 Audi A6 holds up to 19.3 gallons; the 2020 Lexus GS F 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 (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).
Does your owner's manual say something different? Let us know and we'll fix it. More on how we check the numbers.