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2018 Lexus RC 350 Gas Tank Size & Fuel Capacity

Coupe 2 trims listed 1 fuel-system recall ← 2017 2019 →

Fuel tank capacity

17.4gal · 66 L

The 2018 Lexus RC 350 has a fuel tank capacity of 17.4 gallons (66 liters) on every trim.

A full tank is good for roughly 418–487 highway miles or 313–348 miles around town, going by the EPA ratings.

17.4 gal · Smaller than 55% of 2018 models we list.

Highway range
418–487 mi
City range
313–348 mi
Fuel
Premium unleaded (required)
EPA combined
21–23 MPG
EPA size class
Subcompact Cars

2018 Lexus RC 350 fuel tank capacity by trim

What changes the tank sizeTap an option to filter the table

Drive
no difference
Engine
no difference

All 2 trims

MPG and range are city / highway.

TrimEngineDrive Tank MPG city / hwy Range city / hwy
2dr Coupe 3.5L 6cyl 8A · RWD MPG 20 / 28Range 348 / 487 mi 3.5L 6cyl 8A RWD 17.4 gal66 L 20 / 28 348 / 487 mi
2dr Coupe AWD 3.5L 6cyl 6A · AWD MPG 18 / 24Range 313 / 418 mi 3.5L 6cyl 6A AWD 17.4 gal66 L 18 / 24 313 / 418 mi

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 2018 Lexus RC 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 17.4-gallon tank covers about 365 miles.

GaugeGallonsHighway milesCity miles
Full17.4418313
3/413.1313235
1/28.7209157
1/44.410478
1/82.25239

Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 714 gallons, roughly 41 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
21–23 MPG
Tailpipe CO2
388–422 g/mi
EPA greenhouse score
4–5 of 10
Source
EPA ratings

What it costs to fill up a 2018 Lexus RC 350

$91.87 to fill the 17.4-gallon tank from empty with premium, at this week's US average of $5.28 a gallon.

TankFuelUS avg / galFrom emptyFrom 1/4 tank
17.4 galPremium$5.28$91.87$68.90

By region, 17.4-gallon tank

RegionPremium / galFill 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)$3,771

Starts at the US average for premium; type in what your station charges. For other tank sizes, use the fill-up calculator.

RC 350 tank size in other years

The 2018 RC 350 uses the same 17.4 gal tank as every RC 350 since 2015.

Model yearTankLongest highway range
2023 RC 350 17.5 gal 490 mi
2022 RC 350 17.4 gal 487 mi
2021 RC 350 17.4 gal 487 mi
2020 RC 350 17.4 gal 487 mi
2019 RC 350 17.4 gal 487 mi
2018 RC 350 17.4 gal 487 mi
2017 RC 350 17.4 gal 487 mi
2016 RC 350 17.4 gal 487 mi
2015 RC 350 17.4 gal 487 mi
Lexus RC 350 fuel tank by model year
201520162017201820192020202120222023
← 2017 Lexus RC 350 Every RC 350 year 2019 Lexus RC 350 →

2018 Lexus RC 350 vs similar 2018 coupes

At 17.4 gallons, the RC 350's largest tank ranks second of the four 2018 coupes compared here. The INFINITI Q60 carries the most (20.0 gal) and the BMW M2 the least (13.7 gal).

2018 modelTankLongest highway range
INFINITI Q60 20.0 gal 600 mi
Lexus RC 350 17.4 gal 487 mi
Audi RS 5 15.3 gal 398 mi
BMW M2 13.7 gal 356 mi

Other 2018 coupes of a similar size, one model per brand.

2018 Lexus RC 350 fuel system recalls

NHTSA lists 1 fuel-system recall for the 2018 Lexus RC 350, out of 1 recall in total. A recall applies only to the vehicles named in it, so check your VIN.

Delivery · Fuel pumpJan 13, 2020 · NHTSA 20V012000 · Toyota Motor Engineering & Manufacturing · 1,830,752 vehicles

Toyota Motor Engineering & Manufacturing (Toyota) recalled certain 2018-2019 4Runner, Highlander, Camry, Land Cruiser, Sequoia, Sienna, Tacoma and Tundra, and Lexus RC 300, RC 350, GS 350, GX 460, IS 300, LC 500, LS 500, LX 570, RX 350L, and 2019 Toyota Avalon and Corolla, and certain Lexus NX 300, and ES 350 vehicles on January 13, 2020. On March 4, 2020, Toyota expanded the recall to include certain 2014-2015 Toyota 4Runner and Land Cruiser, 2018 Avalon, Corolla, 2014 FJ Cruiser, 2017 Sienna and Lexus 2018 ES 350, 2018-2019 GS 300, 2013-2014 GS350, 2014-2015 GX 460, IS 350 and LX 570, 2014 IS F, 2018-2019 IS 350, LC 500H and LS 500H, 2013-2015 LS 460, 2015 NX 200T and RC350, 2017 RC 200T and RX 350. Toyota also removed the 2018-2019 Toyota 4Runner and Land Cruiser and 2018-2019 Lexus GX 460 and LX 570 and 2019 NX300 from inclusion in this recall. On March 19, 2020, Toyota expanded the recall to include 2015 Lexus GS350 vehicles. The low-pressure fuel pump inside the fuel tank may fail.

Risk and remedy

Risk: If the fuel pump fails, the engine can stall while driving, increasing the risk of a crash.

Remedy: Toyota will notify owners, and dealers will replace the fuel pump, free of charge. The recall began May 4, 2020. Owners may contact Toyota customer service at 1-888-270-9371 or Lexus customer service at 1-800-255-3987. Toyota's numbers for this recall are 20TB02 and 20TA02 for Toyota vehicles and 20LB01 and 20LA01 for Lexus vehicles.

All Lexus fuel recalls Look up your tank by VIN

Frequently asked questions

What is the fuel tank capacity of the 2018 Lexus RC 350?

The 2018 Lexus RC 350 holds 17.4 gallons (66 liters) on every trim we list.

How many gallons and liters does the 2018 Lexus RC 350 gas tank hold?

The 2018 Lexus RC 350 tank holds 66 liters, or 17.4 gallons in US gallons.

Does AWD change the 2018 Lexus RC 350 gas tank?

No. RWD and AWD versions of the 2018 Lexus RC 350 use the same 17.4 gal tank.

How far can a 2018 Lexus RC 350 go on a full tank?

About 418–487 miles on the highway and 313–348 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 2018 Lexus RC 350 go on a quarter tank?

About 104 highway miles or 78 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 2018 Lexus RC 350 take?

Premium unleaded (required). The label inside the fuel door confirms it for your car.

How much does it cost to fill up a 2018 Lexus RC 350?

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 2018 Lexus RC 350?

About 108 pounds for the 17.4-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.

Does the 2018 Lexus RC 350 have a bigger gas tank than the INFINITI Q60?

No. The 2018 INFINITI Q60 holds up to 20.0 gallons; the 2018 Lexus RC 350 holds up to 17.4.

Has the 2018 Lexus RC 350 had a fuel pump or fuel system recall?

Yes. NHTSA lists 1 fuel-system recall for the 2018 Lexus RC 350: 20V012000 (delivery · fuel pump). 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).
  • 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.

Other 2018 Lexus models

ES 300h17.2 gallons ES 35017.2 gallons GS 30017.4 gallons GS 35017.4 gallons GS 450h17.4 gallons GS F17.4 gallons GX 46023.0 gallons IS 30017.4 gallons IS 35017.4 gallons LC 50021.7 gallons LC 500h22.2 gallons LS 50021.7 gallons