What is the mileage of a Lexus NX 300h hybrid?

The Lexus NX 300h hybrid typically logs in the mid-30s in city driving and low-30s on the highway, with a combined figure around the low 30s to mid-30s depending on year and drivetrain. In the United States, the model years most commonly associated with the NX 300h are 2014 through 2017, after which Lexus shifted focus to newer hybrid variants in the NX lineup.

EPA fuel economy by configuration

The following figures reflect common U.S. EPA estimates for the NX 300h configurations that were offered during its market run. Exact numbers can vary by model year and wheel-drive setup, so consult the window sticker for a specific vehicle.

• NX 300h (front-wheel drive): 35 mpg city / 31 mpg highway / 33 mpg combined


• NX 300h (all-wheel drive): 34 mpg city / 30 mpg highway / 32 mpg combined

These numbers illustrate a modest drop for the all-wheel-drive configuration relative to front-wheel drive, reflecting added weight and drivetrain complexity. Real-world results often differ based on driving style, climate, and terrain.

Real-world mileage and influencing factors

Actual fuel economy in everyday use tends to deviate from EPA estimates. Drivers who practice smooth acceleration, maintain steady speeds, and keep tires properly inflated typically approach the higher end of the expected range, while heavy city driving, cold starts, and frequent braking can push consumption upward.

• Driving style and terrain: Highway cruising at steady speeds usually yields better mileage than frequent, rapid acceleration in city traffic.


• Climate and battery behavior: Cold weather can temporarily reduce hybrid efficiency as the battery and engine work to reach optimal operating temperatures.


• Maintenance and conditions: Tire pressure, wheel alignment, and routine maintenance (oil changes, air filters) influence overall efficiency.

For owners and buyers, these practical factors mean the 33–33+ mpg combined range is a reasonable expectation, with variations depending on how the car is used and maintained.

Context within the Lexus NX lineup

The NX 300h was an early, non-plug-in hybrid variant of Lexus’s compact SUV. After the model year 2017 run, Lexus gradually shifted the NX lineup toward newer hybrid configurations, including more recent NX 350h (and, in some markets, plug-in NX 450h+), which offer updated technology and different official efficiency figures. If you’re shopping today, you’ll likely encounter newer NX hybrids with different mpg ratings, but the NX 300h remains a relevant reference point for used-market mileage expectations.

Tips to optimize fuel economy in a NX 300h

To maximize efficiency in a NX 300h, consider the following best practices that help close the gap with EPA estimates:

• Keep tires inflated to the recommended pressure and ensure alignment is within spec.


• Plan routes to minimize stop-and-go driving when possible; smooth acceleration and steady speeds help hybrid systems balance engine and electric motor usage.


• Use climate controls judiciously; moderate use of cabin heating or cooling can reduce energy draw from the battery and engine.


• Schedule regular maintenance, replace filters as needed, and use the recommended grade of fuel to maintain optimal engine efficiency.

Implementing these habits can help a NX 300h achieve closer to its theoretical mileage and improve overall ownership efficiency.

Summary

The Lexus NX 300h hybrid typically delivers roughly 33 miles per gallon combined in its common U.S. configurations, with city and highway numbers that hover around the mid-30s and low-30s, respectively. Real-world results depend on year, drivetrain, and driving conditions. As Lexus evolved the NX lineup, newer hybrids have joined the family, but the NX 300h remains a benchmark for those evaluating used models and their fuel economy expectations.

How long does a hybrid battery last in a Lexus IS 300h?

Average Life Span of a Lexus Battery
On average, a lead-acid Lexus car battery lasts about three to five years, while the nickel–metal hydride batteries used in Lexus hybrids last an average of eight to 10 years or 100,000 to 150,000 miles.

How many miles per gallon does the NX 300h get?

That said, as long as there are no inclines the hybrid can drive on electric power alone at speeds up to around 35 mph. But the 300h's trump card is its fuel consumption – at 29 mpg overall it is the most fuel efficient luxury SUV we've ever tested." "With the hybrid, things are less pleasant.

Does the Lexus NX 300h hybrid require premium gas?

Yes, the Lexus NX requires premium gas.
If you use fuel with an octane rating of less than 91, it can damage your engine. To figure out the octane level of the gas you're buying, check the numbers on the pump. Each fuel option will let you know how much octane is in the gas you're buying.

Is the Lexus NX 300h a good car?

The Lexus NX 300h is generally considered a good car, particularly for its reliability, fuel efficiency, and a comfortable, quiet ride. However, it has some drawbacks, such as limited cargo space, a distracting infotainment touchpad, and potentially underwhelming acceleration. 
This video explains whether you should buy the Lexus NX 300h: 1mHigh Peak AutosYouTube · Nov 25, 2020
Pros

• Reliable: Lexus is known for reliability, and the NX 300h is no exception, with many owners reporting long-term satisfaction with low maintenance needs beyond standard service. 
• Fuel efficient: As a hybrid, it offers excellent gas mileage, saving you money at the pump. 
• Comfortable and quiet: The ride is smooth and quiet, making it a pleasant vehicle for both city and highway driving. The interior is also high-quality and well-appointed. 
• Plenty of rear seat space: Passengers in the back will find the cabin roomy and comfortable. 
• Sharp styling: Many reviewers praise the vehicle's aggressive and sharp styling. 
• Standard safety features: Newer models come with a wealth of standard safety technology like adaptive cruise control, blind-spot monitoring, and forward collision mitigation. 

This video reviews the Lexus NX 300h, highlighting its features and performance: 59sMaz500YouTube · Aug 8, 2024
Cons

• Limited cargo space: The NX 300h has less cargo capacity than many competitors in its class. 
• Infotainment system: The infotainment system can be distracting and is often criticized for its fiddly touchpad controller. 
• Acceleration: While it handles well in the city, the acceleration is not as strong as its sporty looks might suggest, particularly during hard acceleration. 
• Suspension firmness: Some owners report the suspension can be a bit harsh over speed bumps and potholes. 
• Driver's seat: Some drivers find the driver's seat can feel cramped or that the console cuts into legroom. 

Verdict

• The Lexus NX 300h is a great choice if your priorities are fuel economy, reliability, comfort, and a quiet ride, especially if you don't need a lot of cargo space. 
• It may not be the best option if you prioritize strong acceleration or a modern, intuitive infotainment system.