How fuel-efficient is a Lexus NX?
The Lexus NX offers a range of efficiency, with the hybrid and plug-in hybrid models delivering the best mileage. Gas-only variants are solid for their class but generally trail the hybrids in real-world fuel economy. Exact figures vary by model year, drivetrain, and wheel size, so check the EPA ratings for your specific configuration.
To understand the question in depth, we compare the NX’s powertrains across the lineup, explain how efficiency is measured, and look at real-world performance versus official estimates. We also place the NX in the context of its rivals in the compact luxury SUV segment.
Fuel economy by powertrain
Below are typical efficiency profiles for recent NX configurations. Values are representative EPA estimates for the U.S. market and can vary by year, trim, and wheel/tire choice. Use these as a guide to compare broadly, then verify exact numbers for your model.
Gas-powered NX models
Gas-only NX variants rely entirely on internal combustion, so their efficiency is generally lower than hybrid versions. The figures below reflect common EPA estimates for typical configurations.
- NX 250 (gasoline 2.5L): approximately 28 mpg combined, with around 25 mpg city and 33 mpg highway depending on drivetrain (FWD vs AWD) and wheel size.
- NX 350 (turbo 2.4L): approximately 26 mpg combined, with city/highway splits that can place it in the mid-20s to low-30s depending on setup and tires.
Note: Real-world results vary with driving style, climate control use, and terrain, and AWD or larger wheels can reduce highway efficiency slightly.
NX 350h hybrid
The NX 350h pairs a 2.5L engine with electric motors to boost efficiency, especially in urban driving. It sits at the higher end of the NX’s fuel economy spectrum among gasoline/electric hybrids.
- NX 350h hybrid: roughly 38–39 mpg combined in EPA testing, with potential variations around city/highway splits based on tires and driving conditions.
In practice, drivers who do a lot of city driving or frequent short trips tend to see the greatest benefits from the hybrid setup.
NX 450h+ plug-in hybrid
The plug-in variant adds a larger battery, enabling electric-only operation for short trips and improving overall efficiency when charged and used optimally. EPA figures reflect both electric and gasoline operation and can vary with charging routines.
- NX 450h+ plug-in hybrid: about 60–62 MPGe combined when considering electric and gasoline use, with an electric-range capability typically around 30–37 miles per full charge depending on model year and conditions.
For buyers who can routinely plug in, the NX 450h+ often delivers the best overall efficiency, especially for daily commutes within its electric range.
Real-world performance and driving tips
Official EPA ratings provide a standardized benchmark, but real-world mileage depends on behavior and conditions. Gentle acceleration, steady speeds, using cruise control where appropriate, and maintaining proper tire inflation can noticeably boost fuel economy. Cold weather, frequent short trips, and heavy cargo or roof racks tend to lower efficiency for all NX variants.
Competitors and market context
In the compact luxury SUV segment, Lexus’s hybrid and plug-in options typically compare favorably with rivals like the BMW X3 xDrive30e, Audi Q5 55 TFSI e, and Mercedes-Benz GLC 300e for efficiency. The NX 350h often leads in real-world city efficiency within its class, while the NX 450h+ appeals to buyers who can maximize electric driving and benefit from reduced gasoline use on short trips.
Summary
Overall, the NX lineup offers a clear path to higher fuel efficiency through its hybrid and plug-in hybrid models. If maximizing mpg is important, the NX 350h and NX 450h+ are the standout choices, with the latter adding electric driving for short distances. Gas-only NX variants provide solid efficiency but generally fall short of the hybrids in typical daily commuting. Always verify the exact EPA ratings for your chosen year and trim to get precise numbers before purchasing.
