How many miles can a Lexus IS go for?
On a full tank, a Lexus IS typically travels roughly 400 to 460 miles, depending on the model and driving conditions.
The exact distance depends on which IS you drive (turbocharged four-cylinder IS 300, V6-powered IS 350, or high-performance IS 500), as well as drivetrain and weather. This article breaks down typical range expectations and what drivers can expect in everyday use.
Fuel tank size and expected range by model
The Lexus IS shares a common fuel tank size across recent US-spec versions, with a capacity of about 15.9 gallons. The mile range is a function of the EPA-rated fuel economy for each engine and drivetrain configuration. The figures below reflect typical ranges for current (or recent) model years in the U.S. market and can vary by trim and options.
- Lexus IS 300 — equipped with a 2.0-liter turbocharged four-cylinder engine; typical combined fuel economy in the mid-20s to upper-20s mpg; estimated full-tank range around 410–460 miles.
- Lexus IS 350 — powered by a 3.5-liter V6; typical combined fuel economy in the low-to-mid 20s mpg; estimated full-tank range around 360–410 miles.
- Lexus IS 500 — features a 5.0-liter V8; typical combined fuel economy in the high-teens to around 20 mpg; estimated full-tank range around 300–320 miles.
Note: The exact numbers vary by year, drivetrain (RWD vs. AWD), and how the vehicle is driven (highway cruising vs. city driving). Always check the EPA ratings for your exact model year and configuration.
These figures provide a baseline for planning trips and budgeting fuel, but real-world results will differ based on driving habits and conditions.
Real-world factors that affect range
Actual range can drift from the numbers above due to several everyday conditions. The following factors commonly influence how far a tank will take you in an IS sedan.
- Driving style: Aggressive acceleration and sustained high speeds reduce fuel economy.
- Terrain and traffic: Stop-and-go city driving uses more fuel than steady highway cruising.
- Climate control: Heating or air conditioning can lower mpg, especially in extreme temperatures.
- Payload and aerodynamics: Full passengers or cargo and roof accessories can affect efficiency.
- Maintenance and tires: Proper tire pressure and regular maintenance help preserve fuel economy.
Understanding these factors helps drivers estimate when a refill will be needed and plan longer trips with greater confidence.
What this means for buyers and daily drivers
For shoppers weighing an IS, knowing the expected range helps with trip planning and budgeting for fuel costs. In the United States, the IS lineup currently includes the turbocharged IS 300, the V6-powered IS 350, and the high-performance IS 500. There is no hybrid option in the US-market IS lineup, so range considerations come down to engine choice, drivetrain, and daily driving habits.
Summary
In practical terms, a Lexus IS can typically cover about 410–460 miles on a full tank in the IS 300, about 360–410 miles in the IS 350, and roughly 300–320 miles in the IS 500. Real-world range varies with driving conditions, weather, and how the car is driven. For precise figures, refer to the EPA ratings for your specific model year and configuration.
