2021 Lexus LS 500 Gas Tank Size & Fuel Capacity
Fuel tank capacity
21.7gal · 82 L
The 2021 Lexus LS 500 has a fuel tank capacity of 21.7 gallons (82 liters) on every trim.
A full tank is good for roughly 586–629 highway miles or 369–391 miles around town, going by the EPA ratings.
21.7 gal · Bigger than 72% of 2021 models we list.
- By trim
- Gas cap & parts
- Fuel essentials
- Miles per tank
- Fill-up cost
- Other years
- Compared
- Fuel recalls
- FAQ
2021 Lexus LS 500 fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Drive
- no difference
All 4 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| 4dr Sedan 3.5L 6cyl Turbo 10A · RWD MPG 18 / 29Range 391 / 629 mi | 3.5L 6cyl Turbo 10A | RWD | 21.7 gal82 L | 18 / 29 | 391 / 629 mi | |
| 4dr Sedan AWD 3.5L 6cyl Turbo 10A · AWD MPG 17 / 27Range 369 / 586 mi | 3.5L 6cyl Turbo 10A | AWD | 21.7 gal82 L | 17 / 27 | 369 / 586 mi | |
| F SPORT 4dr Sedan 3.5L 6cyl Turbo 10A · RWD MPG 18 / 29Range 391 / 629 mi | 3.5L 6cyl Turbo 10A | RWD | 21.7 gal82 L | 18 / 29 | 391 / 629 mi | |
| F SPORT 4dr Sedan AWD 3.5L 6cyl Turbo 10A · AWD MPG 17 / 27Range 369 / 586 mi | 3.5L 6cyl Turbo 10A | AWD | 21.7 gal82 L | 17 / 27 | 369 / 586 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 2021 Lexus LS 500 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 21.7-gallon tank covers about 477 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 21.7 | 629 | 391 |
| 3/4 | 16.3 | 472 | 293 |
| 1/2 | 10.9 | 315 | 195 |
| 1/4 | 5.4 | 157 | 98 |
| 1/8 | 2.7 | 79 | 49 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 682 gallons, roughly 31 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
- 21–22 MPG
- Tailpipe CO2
- 399–432 g/mi
- EPA greenhouse score
- 4 of 10
- Source
- EPA ratings
What it costs to fill up a 2021 Lexus LS 500
$114.58 to fill the 21.7-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 |
|---|---|---|---|---|
| 21.7 gal | Premium | $5.28 | $114.58 | $85.93 |
By region, 21.7-gallon tank
| Region | Premium / gal | Fill from empty |
|---|---|---|
| East Coast | $4.93 | $106.98 |
| Midwest | $5.37 | $116.53 |
| Gulf CoastLowest | $4.57 | $99.17 |
| Rocky Mountain | $5.12 | $111.10 |
| West Coast | $6.08 | $131.94 |
| CaliforniaHighest | $6.36 | $138.01 |
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
- 21.7-gallon tank$114.58
- 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.
LS 500 tank size in other years
The 2021 LS 500 uses the same 21.7 gal tank as every LS 500 since 2018.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2023 LS 500 | 21.7 gal | 629 mi |
| 2022 LS 500 | 21.7 gal | 629 mi |
| 2021 LS 500 | 21.7 gal | 629 mi |
| 2020 LS 500 | 21.7 gal | 651 mi |
| 2019 LS 500 | 21.7 gal | 651 mi |
| 2018 LS 500 | 21.7 gal | 651 mi |
2021 Lexus LS 500 vs similar 2021 sedans
At 21.7 gallons, the LS 500's largest tank ranks third of the seven 2021 sedans compared here. The Porsche Panamera carries the most (23.7 gal) and the Karma GS-6 the least (10.2 gal).
| 2021 model | Tank | Longest highway range |
|---|---|---|
| Porsche Panamera | 21.1–23.7 gal | 569 mi |
| Mercedes-Benz Maybach | 22.2 gal | 533 mi |
| Lexus LS 500 | 21.7 gal | 629 mi |
| Audi A8 | 17.2–21.7 gal | 564 mi |
| BMW ALPINA B7 | 20.6 gal | 494 mi |
| Volvo S90 | 15.9 gal | 509 mi |
| Karma GS-6 | 10.2 gal | 255 mi |
Other 2021 sedans of a similar size, one model per brand.
2021 Lexus LS 500 fuel system recalls
None of the 1 recall NHTSA lists for the 2021 Lexus LS 500 involve the fuel system.
Frequently asked questions
What is the fuel tank capacity of the 2021 Lexus LS 500?
The 2021 Lexus LS 500 holds 21.7 gallons (82 liters) on every trim we list.
How many gallons and liters does the 2021 Lexus LS 500 gas tank hold?
The 2021 Lexus LS 500 tank holds 82 liters, or 21.7 gallons in US gallons.
Does AWD change the 2021 Lexus LS 500 gas tank?
No. RWD and AWD versions of the 2021 Lexus LS 500 use the same 21.7 gal tank.
How far can a 2021 Lexus LS 500 go on a full tank?
About 586–629 miles on the highway and 369–391 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 2021 Lexus LS 500 go on a quarter tank?
About 157 highway miles or 98 in town from the 21.7-gallon tank, which has roughly 5.4 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2021 Lexus LS 500 take?
Premium unleaded (required). The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2021 Lexus LS 500?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 21.7-gallon tank from empty costs $114.58. It ranges from $99.17 in the Gulf Coast to $138.01 in California.
How much does a full tank of gas weigh in a 2021 Lexus LS 500?
About 135 pounds for the 21.7-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2021 Lexus LS 500 have a bigger gas tank than the Audi A8?
No, they match: both top out at 21.7 gallons in 2021.
Has the 2021 Lexus LS 500 had a fuel pump or fuel system recall?
No. None of the 1 recall NHTSA lists for the 2021 Lexus LS 500 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 (Lexus 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.