4dr SUV AWD3.5L 6cyl 6A · AWDMPG 18 / 24Range 346 / 461 mi
3.5L 6cyl 6A
AWD
19.2 gal73 L
18 / 24
346 / 461 mi
Crafted Line 4dr SUV AWD3.5L 6cyl 8A · AWDMPG 18 / 26Range 346 / 499 mi
3.5L 6cyl 8A
AWD
19.2 gal73 L
18 / 26
346 / 499 mi
F SPORT 4dr SUV AWD3.5L 6cyl 8A · AWDMPG 18 / 26Range 346 / 499 mi
3.5L 6cyl 8A
AWD
19.2 gal73 L
18 / 26
346 / 499 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 2015 Lexus RX 350 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 21 MPG, a full 19.2-gallon tank covers about 403 miles.
Gauge
Gallons
Highway miles
City miles
Full
19.2
499
346
3/4
14.4
374
259
1/2
9.6
250
173
1/4
4.8
125
86
1/8
2.4
62
43
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 714 gallons, roughly 37 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.
At 19.2 gallons, the RX 350's largest tank ranks fourth of the seven 2015 SUVs compared here. The INFINITI QX70 carries the most (23.8 gal) and the BMW X4 the least (17.7 gal).
Other 2015 SUVs of a similar size, one model per brand.
2015 Lexus RX 350 fuel system recalls
NHTSA lists 1 fuel-system recall for the 2015 Lexus RX 350, out of 1 recall in total. A recall applies only to the vehicles named in it, so check your VIN.
Delivery · Hoses, lines/piping, and fittingsSep 19, 2014 · NHTSA 14V576000 · Toyota Motor Engineering & Manufacturing · 15,872 vehicles
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain model year 2014 Toyota Avalon, Camry, Sienna, and Highlander and model year 2015 Lexus RX350 vehicles. Fuel may leak from the one of the fuel delivery pipes in the engine compartment.
Risk and remedy
Risk: A fuel leak in the presence of an ignition source increases the risk of a fire.
Remedy: Toyota will notify owners, and dealers will replace any of the suspect fuel delivery pipes free of charge. The recall began November 17, 2014. Owners may contact Toyota customer service at 1-800-331-4331.
What is the fuel tank capacity of the 2015 Lexus RX 350?
The 2015 Lexus RX 350 holds 19.2 gallons (73 liters) on every trim we list.
How many gallons and liters does the 2015 Lexus RX 350 gas tank hold?
The 2015 Lexus RX 350 tank holds 73 liters, or 19.2 gallons in US gallons.
Does AWD change the 2015 Lexus RX 350 gas tank?
No. AWD and FWD versions of the 2015 Lexus RX 350 use the same 19.2 gal tank.
How far can a 2015 Lexus RX 350 go on a full tank?
About 461–499 miles on the highway and 346 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 2015 Lexus RX 350 go on a quarter tank?
About 125 highway miles or 86 in town from the 19.2-gallon tank, which has roughly 4.8 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2015 Lexus RX 350 take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2015 Lexus RX 350?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 19.2-gallon tank from empty costs $81.98. It ranges from $71.04 in the Gulf Coast to $113.09 in California.
How much does a full tank of gas weigh in a 2015 Lexus RX 350?
About 119 pounds for the 19.2-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2015 Lexus RX 350 have a bigger gas tank than the Lincoln MKX?
No, they match: both top out at 19.2 gallons in 2015.
Has the 2015 Lexus RX 350 had a fuel pump or fuel system recall?
Yes. NHTSA lists 1 fuel-system recall for the 2015 Lexus RX 350: 14V576000 (delivery · hoses, lines/piping, and fittings). Check your VIN at nhtsa.gov/recalls to see if your car is affected.
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).