How many miles per gallon does a Lexus NX 450h+ get?
The NX 450h+ is EPA-rated to deliver about 84 MPGe combined with roughly 36 miles of all-electric range; once the battery is depleted, its gasoline economy sits in the mid-30s mpg. This article explains those figures, what they mean, and how real-world driving can differ.
In more detail, the question centers on how a plug-in hybrid like the NX 450h+ blends electric and gasoline power. Understanding EPA ratings, MPGe, and the transition between electric and hybrid modes helps buyers gauge efficiency and plan charging needs. Below are the key numbers and the factors that influence them.
EPA ratings and what they mean
EPA ratings for plug-in hybrids use MPGe to compare energy use against conventional gasoline vehicles. The NX 450h+ provides an electric range, a combined MPGe figure, and a gasoline-only fuel economy figure for when the battery isn’t supplying power.
- All-electric range (EPA-estimated): about 36 miles
- MPGe (combined): around 84 MPGe
- Gasoline-only mpg when battery is depleted: typically about 34–36 mpg
These figures reflect the model’s dual nature: a meaningful electric range for short trips and a respectable gasoline efficiency for longer drives once the battery is exhausted. Real-world results depend on driving habits, weather, and charging behavior.
Real-world performance and factors that affect mpg
Actual miles per gallon for the NX 450h+ varies with conditions and usage. The following factors commonly influence efficiency:
- Driving style and speed — smoother acceleration and moderate speeds improve efficiency.
- Climate control usage — heating and air conditioning can significantly affect battery range and fuel economy.
- Battery charge level and EV mode usage — charging more often and using electric mode for shorter trips can maximize MPGe.
- Terrain and driving route — hilly terrain or frequent stop-and-go traffic reduces efficiency.
- Tire condition and inflation — underinflated tires raise rolling resistance and lower mpg.
- Payload and aero drag — heavier loads or roof racks increase energy use.
Tips to maximize efficiency include charging the battery ahead of daily commutes, using EV mode for short trips, maintaining steady speeds, and keeping tires properly inflated. Real-world mpg will generally fall short of EPA estimates if the vehicle spends most trips on the gasoline engine without charging.
Maintenance and practical tips for better fuel economy
Beyond driving habits, regular maintenance supports efficiency. Ensure tires are inflated to the recommended pressure, use manufacturer-approved fluids, and schedule periodic inspections of the hybrid system. Preconditioning the cabin while the vehicle is still plugged in can help conserve battery power for the trip ahead.
For buyers comparing models, remember that EPA MPGe and electric-range figures can vary slightly year to year and by market. Always check the latest label for the exact numbers on the specific vehicle you're considering.
Summary
The Lexus NX 450h+ blends plug-in electric capability with a gasoline engine to deliver about 84 MPGe combined, with roughly 36 miles of electric range. When you run on gasoline alone after the battery is depleted, the vehicle typically achieves approximately 34–36 mpg. Real-world results depend on how you drive, how often you charge, and environmental conditions. For those with regular short commutes and access to charging, the NX 450h+ can maximize its electric advantage; for longer trips, its hybrid efficiency remains competitive within its class.
What is the gas mileage on a Lexus NX 450h+?
The Lexus NX 450h+ has an EPA-estimated 84 MPGe (miles per gallon equivalent) combined, with 38 city / 33 highway MPG when using gasoline. It also has an all-electric range of up to 37 miles.
You can watch this video to learn more about the Lexus NX 450h+ specs and features: 55sMatt The CarguyYouTube · Aug 23, 2024
- MPGe: 84 combined MPGe (when using both gas and electric power).
- Gasoline MPG: 38 city / 33 highway / 36 combined MPG.
- Electric Range: Up to 37 miles on all-electric power.
- Charging: Takes about 4.5 hours to fully charge the battery using a 240V outlet.
What is the difference between Lexus RX 450h and 450h+?
The main difference is that the "450h" refers to a standard hybrid model, while the "450h+" specifically denotes a plug-in hybrid (PHEV) model that can be charged externally for a significant electric-only driving range. The "+" model typically has a more powerful plug-in hybrid system and a higher price point, but offers greater efficiency and the ability to run on pure electricity for daily commutes. The regular 450h uses a self-charging hybrid system without external charging capabilities.
Lexus 450h+ (Plug-in Hybrid)
- Electric Range: Offers a manufacturer-estimated 37 to 38 miles of all-electric driving range after being charged externally.
- Performance: Delivers stronger performance and acceleration, with a combined 304 to 308 horsepower.
- Fuel Efficiency: Generally more efficient due to its ability to use electric power for short trips, but will still use premium unleaded gasoline.
- Charging: Requires external charging to utilize its full electric range.
- Price: Typically has a higher starting price than the 450h model.
Lexus 450h (Standard Hybrid)
- Electric Range: Does not have a dedicated all-electric driving range because it is a self-charging hybrid, not a plug-in hybrid.
- Performance: Has a lower net horsepower compared to the 450h+ model, with a total of 246 horsepower for the RX 350h model.
- Fuel Efficiency: Provides excellent fuel efficiency for everyday driving through its self-charging system, with no need for external charging.
- Charging: Does not need to be plugged in; it charges its battery using the gas engine and regenerative braking.
- Price: Is more affordable than the 450h+ model.
Does the NX 450h+ qualify for tax credits?
Lexus offers $7,500 in "lease cash" for the 2024 NX 450h+ in the US. I think the reason they're offering this is to stay competitive in pricing with other PHEVs that qualify for the $7,500 federal tax rebate. But since the 450h+ is 100% built in Japan, it does not qualify for this federal tax rebate.
What is the real range of Lexus NX 450h+?
between 42 and 46 miles
They are powered by an 18.1kWh battery which is on the large side for this class of plug-in hybrid. Thanks to its big battery, the NX 450h+ has a range of between 42 and 46 miles in the combined official WLTP tests, with CO2 emissions between 21 and 25g/km and fuel economy between 256.8 and 313.8mpg.
