How many miles can a Lexus IS 250 go on a full tank?
Typically about 435 miles of range on a full tank under mixed driving, with roughly 365 miles in city conditions and up to about 522 miles on highway. Exact figures depend on model year, drivetrain, and driving habits.
Fuel capacity and efficiency basics
The Lexus IS 250 commonly uses a 17.4-gallon (66-liter) fuel tank in North American markets. EPA fuel-economy estimates for most IS 250 sedans of this era are around 21 mpg in the city, 30 mpg on the highway, and about 25 mpg combined for rear-wheel-drive versions; all-wheel-drive variants may show slightly lower numbers. These figures form the baseline for estimating range, but real-world results vary with conditions, maintenance, and load.
Key numbers you need to estimate range include tank size and miles-per-gallon estimates from EPA ratings.
- Fuel tank capacity: 17.4 gallons (66 liters) for most IS 250 models sold in North America.
- EPA fuel economy (typical, RWD): about 21 mpg city, 30 mpg highway, 25 mpg combined.
- Estimated ranges using those figures: city ~365 miles, highway ~522 miles, combined ~435 miles.
In practice, your actual range depends on year, drivetrain, tires, maintenance, and how you drive. Real-world fuel economy is often lower than EPA numbers, especially in heavy traffic or with aggressive driving.
Estimated range by driving conditions
Below are illustrative ranges using the common tank size and typical EPA values. These numbers assume a full tank at 17.4 gallons and standard EPA ratings; actual results will vary by vehicle and conditions.
- City driving (around 21 mpg): approximately 365 miles.
- Combined driving (around 25 mpg): approximately 435 miles.
- Highway driving (around 30 mpg): approximately 522 miles.
Note that these ranges are guidelines. A well-maintained IS 250 with optimal tire pressure and conservative driving will approach the higher end, while rough roads, heavy loads, or aggressive acceleration will reduce range.
Practical tips to maximize range
To get the most miles from a full tank, consider the following practices and how they align with the IS 250’s design and performance.
- Keep tires inflated to the recommended pressure to reduce rolling resistance.
- Maintain the engine and ensure proper alignment and filters to sustain efficiency.
- Avoid prolonged idling and use smooth, steady acceleration on the highway.
- Use recommended fuel grade and follow manufacturer maintenance intervals.
Implementing these habits can help you approach your vehicle’s EPA-based range in typical conditions.
Notes on model-year and market variations
Fuel-tank size and efficiency can vary slightly by market (e.g., U.S. vs. other regions) and by the IS 250’s production year or drivetrain configuration. Always verify the exact specifications for your specific car in the owner's manual or on the OEM fuel-economy label found on the door jamb.
Summary
For most Lexus IS 250 models, a full 17.4-gallon tank yields an estimated range of about 365 miles in city driving, roughly 435 miles on combined driving, and up to about 522 miles on highway, depending on year, drivetrain, and conditions. Real-world results will vary, so use the EPA estimates as a baseline and adjust for your own driving style and maintenance.
