IS 300 Lexus fuel economy l/100km?
The IS 300’s fuel economy is commonly published in liters per 100 kilometers (L/100km) in many markets. In the United States, official figures are provided as miles per gallon (mpg), but they can be converted to L/100km for direct comparison.
Market-by-market fuel economy for the IS 300
Numbers vary by market, drivetrain and model year. The IS 300 uses a 2.0-liter turbocharged inline-4 paired with an 8-speed automatic; an all-wheel-drive (AWD) variant is also offered. The following are typical ranges for the current generation (roughly 2021–2024) across major regions.
United States (EPA ratings)
In the U.S., EPA estimates translate to roughly 8.4–9.0 L/100km for combined driving, depending on drivetrain. The sedan’s rear-wheel-drive (RWD) setup tends to be slightly more economical than the AWD version.
- RWD: about 8.4 L/100km (roughly 28 mpg combined)
- AWD: about 8.8–9.0 L/100km (roughly 26–27 mpg combined)
These figures are approximate and can vary with model year, tires, trim, and real-world conditions.
Europe and other markets (WLTP)
European WLTP numbers for the IS 300 (2.0L turbo) typically fall in the mid-to-high 7 L/100km range in combined driving, with variations by drivetrain, tires and equipment.
- WLTP combined: approximately 6.9–7.7 L/100km depending on configuration (FWD vs. AWD, tires)
Note: WLTP figures tend to be lower (more favorable) than older cycles, but real-world results will vary.
What affects the official numbers
The published figures reflect standardized testing conditions and do not capture every real-world scenario. Factors such as driving style, traffic, terrain, cargo load, climate control usage, tire type and pressure, and vehicle maintenance can all influence actual consumption.
Tips to maximize fuel economy
Improving efficiency comes down to habits, maintenance and setup. Consider the following guidelines to help keep L/100km low on the IS 300.
- Drive smoothly: gradual acceleration and steady cruising reduce fuel use.
- Plan routes to minimize stop-and-go traffic and idling.
- Keep tires properly inflated to the recommended pressure.
- Follow a regular maintenance schedule (air filters, spark plugs, oil changes).
- Lighten the load: remove unnecessary roof racks and excess cargo.
- Use steering and fuel-saving modes as appropriate for the drive.
Applying these practices can help you get closer to the official economy figures in everyday driving.
What to trust: official numbers vs. real-world results
Official numbers (EPA in the U.S., WLTP in Europe) provide a baseline for comparison, but real-world fuel economy will vary. If your priority is economy, check the exact figures for your specific model year, drivetrain (RWD vs AWD) and trim from the manufacturer’s specifications sheet or a trusted automotive rating source.
Summary
The Lexus IS 300’s fuel economy is published in L/100km in many markets, with typical combined values around 6.9–7.7 L/100km under WLTP in Europe and about 8.4–9.0 L/100km (roughly 26–28 mpg) in the U.S. for the 2.0-liter turbo with RWD or AWD (numbers vary by year and configuration). Real-world results depend on driving conditions and vehicle setup, but consistent driving habits and proper maintenance can help you approach the official figures.
