1999 Lexus RX 300 Gas Tank Size & Fuel Capacity
Fuel tank capacity
17.2gal · 65 L
The 1999 Lexus RX 300 has a fuel tank capacity of 17.2 gallons (65 liters) on every trim.
A full tank is good for roughly 344–378 highway miles or 292 miles around town, going by the EPA ratings.
17.2 gal · Smaller than 64% of 1999 models we list.
- By trim
- Gas cap & parts
- Fuel essentials
- Miles per tank
- Fill-up cost
- Other years
- Compared
- Fuel recalls
- Pump & gauge parts
- FAQ
1999 Lexus RX 300 fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Drive
- no difference
All 2 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| 4dr SUV 3.0L 6cyl 4A · FWD MPG 17 / 22Range 292 / 378 mi | 3.0L 6cyl 4A | FWD | 17.2 gal65 L | 17 / 22 | 292 / 378 mi | |
| 4dr SUV AWD 3.0L 6cyl 4A · AWD MPG 17 / 20Range 292 / 344 mi | 3.0L 6cyl 4A | AWD | 17.2 gal65 L | 17 / 20 | 292 / 344 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 1999 Lexus RX 300 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 17.2-gallon tank covers about 327 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 17.2 | 378 | 292 |
| 3/4 | 12.9 | 284 | 219 |
| 1/2 | 8.6 | 189 | 146 |
| 1/4 | 4.3 | 95 | 73 |
| 1/8 | 2.2 | 47 | 37 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 789 gallons, roughly 46 full tanks.
In real driving: owners who log fill-ups at fueleconomy.gov average 17.3 MPG in the RX 300 (14 drivers), about 298 miles on a full 17.2-gallon tank.
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
- 18–19 MPG
- Tailpipe CO2
- 468–494 g/mi
- Source
- EPA ratings
What it costs to fill up a 1999 Lexus RX 300
$73.44 to fill the 17.2-gallon tank from empty with regular, at this week's US average of $4.27 a gallon.
| Tank | Fuel | US avg / gal | From empty | From 1/4 tank |
|---|---|---|---|---|
| 17.2 gal | Regular | $4.27 | $73.44 | $55.08 |
By region, 17.2-gallon tank
| Region | Regular / gal | Fill from empty |
|---|---|---|
| East Coast | $4.02 | $69.14 |
| Midwest | $4.27 | $73.44 |
| Gulf CoastLowest | $3.70 | $63.64 |
| Rocky Mountain | $4.46 | $76.71 |
| West Coast | $5.42 | $93.22 |
| CaliforniaHighest | $5.89 | $101.31 |
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
- 17.2-gallon tank$73.44
- A year of driving (15,000 mi)$3,371
Starts at the US average for regular; type in what your station charges. For other tank sizes, use the fill-up calculator.
RX 300 tank size in other years
1999 is the first RX 300 model year we list.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2003 RX 300 | 19.8 gal | 416 mi |
| 2002 RX 300 | 19.8 gal | 416 mi |
| 2001 RX 300 | 19.8 gal | 416 mi |
| 2000 RX 300 | 17.2 gal | 378 mi |
| 1999 RX 300 | 17.2 gal | 378 mi |
1999 Lexus RX 300 vs similar 1999 SUVs
The RX 300 has the smallest tank of the three 1999 SUVs compared here: 17.2 gallons, against 23.4 for the Land Rover Discovery.
| 1999 model | Tank | Longest highway range |
|---|---|---|
| Land Rover Discovery | 23.4 gal | 374 mi |
| INFINITI QX4 | 21.1 gal | 359 mi |
| Lexus RX 300 | 17.2 gal | 378 mi |
Other 1999 SUVs of a similar size, one model per brand.
1999 Lexus RX 300 fuel system recalls
None of the 2 recalls NHTSA lists for the 1999 Lexus RX 300 involve the fuel system.
1999 Lexus RX 300 fuel pump and gauge parts
NHTSA lists no fuel-system recall for the 1999 Lexus RX 300, so a failed pump or gauge is a normal repair. These are the part numbers the makers list for it.
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Frequently asked questions
What is the fuel tank capacity of the 1999 Lexus RX 300?
The 1999 Lexus RX 300 holds 17.2 gallons (65 liters) on every trim we list.
How many gallons and liters does the 1999 Lexus RX 300 gas tank hold?
The 1999 Lexus RX 300 tank holds 65 liters, or 17.2 gallons in US gallons.
Does AWD change the 1999 Lexus RX 300 gas tank?
No. FWD and AWD versions of the 1999 Lexus RX 300 use the same 17.2 gal tank.
How far can a 1999 Lexus RX 300 go on a full tank?
About 344–378 miles on the highway and 292 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 1999 Lexus RX 300 go on a quarter tank?
About 95 highway miles or 73 in town from the 17.2-gallon tank, which has roughly 4.3 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
How many miles does a 1999 Lexus RX 300 really get on a tank?
Drivers who log their fill-ups at fueleconomy.gov average 17.3 MPG in the 1999 Lexus RX 300 (14 drivers), which works out to about 298 miles on a full 17.2-gallon tank.
What gas does the 1999 Lexus RX 300 take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 1999 Lexus RX 300?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 17.2-gallon tank from empty costs $73.44. It ranges from $63.64 in the Gulf Coast to $101.31 in California.
How much does a full tank of gas weigh in a 1999 Lexus RX 300?
About 107 pounds for the 17.2-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 1999 Lexus RX 300 have a bigger gas tank than the INFINITI QX4?
No. The 1999 INFINITI QX4 holds up to 21.1 gallons; the 1999 Lexus RX 300 holds up to 17.2.
Has the 1999 Lexus RX 300 had a fuel pump or fuel system recall?
No. None of the 2 recalls NHTSA lists for the 1999 Lexus RX 300 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).
- Real-world MPG: driver-reported fill-ups shared at fueleconomy.gov (My MPG).
Does your owner's manual say something different? Let us know and we'll fix it. More on how we check the numbers.