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How many gallons fill a Lexus?

Most Lexus vehicles have fuel tanks that hold roughly between 11 and 22 gallons. The exact capacity depends on the model, year, and drivetrain.


The question can be understood as asking for the fuel-tank capacity of a Lexus, which varies across the lineup. Here’s a guide to typical capacities and how to find the precise figure for your specific model and year.


Fuel tank capacities by model type


Below are representative capacities for current Lexus models. Exact numbers can vary slightly by year, trim level, and whether the vehicle is front- or all-wheel drive. Use these as a general reference and verify with official specifications for your exact vehicle.



  • Lexus UX: about 11.6 gallons

  • Lexus NX: about 14.8–15.9 gallons

  • Lexus IS: about 15.9–16.9 gallons

  • Lexus ES: about 17.0–17.4 gallons

  • Lexus RX: about 19.0–20.0 gallons

  • Lexus LC: about 19.0–20.0 gallons

  • Lexus LS: about 23.0 gallons

  • Lexus GX: about 21.0–23.0 gallons


Concluding the list, you’ll find that everyday Lexuses tend to cluster in a few practical ranges: compact models around 11–12 gallons, mid-size sedans around 16–18 gallons, and larger SUVs around 19–23 gallons. For some larger or specialty models, capacities can exceed 23 gallons.


How to confirm the exact tank size for your Lexus


To verify the precise capacity for your vehicle, check the owner’s manual or the official Lexus website under specifications for your exact year and trim. You can also look at the driver’s door jamb sticker, which often lists the fuel tank capacity and other key specs. If in doubt, a Lexus dealer can pull the exact figure for your VIN.


Practical tips for planning refuels


Know your model’s approximate range on a full tank and compare it to your typical driving: city vs. highway, cargo weight, and climate can affect fuel economy. When planning longer trips, it helps to know both the tank size and your car’s miles-per-gallon (MPG) rating to estimate how often you’ll need to stop for fuel.


Why tank sizes vary within the Lexus lineup


Tank capacity differences arise from vehicle size, engine choice, drivetrain (FWD vs. AWD), and design refinements across generations. Hybrid variants may share a similar tank size to their gasoline-only counterparts, but some trims or markets can see subtle changes. Always rely on the exact spec for your vehicle to plan fills accurately.


Summary


In short, a Lexus’ fuel tank size ranges from about 11 gallons on the smallest models to roughly 23 gallons on the largest SUVs, with many common models clustering in the 16–20 gallon range. For the most accurate figure, consult your owner’s manual, the door jamb sticker, or Lexus’ official specifications for your exact year and trim.

Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.