The 2018 Lexus NX 300h AWD aims for 31 MPG combined. This isn’t a fire-breathing performance SUV designed for apex carving; it’s a meticulously crafted, comfortable, and relatively efficient luxury crossover aimed squarely at buyers who prioritize reliability and low running costs above all else. It’s for the professional who wants a quiet commute, the empty-nester looking to downsize without sacrificing refinement, or anyone seeking a practical yet premium vehicle that sips fuel, not guzzles it.

City and highway performance

The EPA numbers reveal this hybrid NX’s strength: it excels in city driving. The 33 MPG city rating showcases the advantage of the hybrid powertrain’s regenerative braking and electric motor assistance in stop-and-go traffic. Highway driving, rated at 30 MPG, is still respectable. However, that is where the benefits of the electric motor aren’t as pronounced and the gasoline engine does more of the work maintaining higher speeds. This difference is typical for hybrid vehicles, and experienced Lexus owners are well-aware of the trade-offs.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2018 Lexus NX 300h AWD is $1,400. This figure is based on driving 15,000 miles per year and using national average fuel prices at the time of calculation. While fluctuating gas prices can alter this number slightly, it provides a useful benchmark for comparing the NX 300h’s cost of ownership against other vehicles. For those covering significantly more than 15,000 miles annually, or who live in areas with particularly high fuel costs, it’s worthwhile to adjust this estimate accordingly.

Real-world expectations

EPA ratings provide a standardized comparison. Real-world MPG can vary based on driving habits, terrain, and weather conditions. Aggressive acceleration, frequent hard braking, and prolonged idling will inevitably reduce fuel economy. Steep hills and cold temperatures can impact hybrid system efficiency. Most NX 300h drivers report achieving figures reasonably close to the EPA estimates. This shows the car’s consistent performance and the effectiveness of its hybrid system in everyday use.

How it compares

The NX 300h faces a competitive segment. The Acura RDX offers a more powerful gasoline engine, but typically achieves around 23 MPG combined. The BMW X3 xDrive30i delivers similar figures. Even other hybrids like the Toyota RAV4 Hybrid offer comparable fuel economy (~40 MPG combined in some model years), but may not provide the same level of luxury appointments as the Lexus. For buyers prioritizing fuel efficiency without compromising on a premium experience, the NX 300h strikes a balance. Looking at NX MPG across all years shows that this generation maintains a solid reputation for efficiency within the model’s history. Competitors like the Lincoln Corsair Grand Touring plug-in hybrid are more efficient, but command a higher price and require plugging in to achieve their best numbers.

Tips to maximize efficiency

Use the “EV” mode for short, low-speed trips. The NX 300h can operate solely on electric power for limited distances and speeds, especially useful in parking lots or residential areas. This feature can significantly increase your city MPG.

Monitor the energy flow display. The NX 300h features a screen that visually represents the flow of energy between the engine, electric motor, and battery. This feedback helps you understand how your driving style impacts fuel economy and encourages smoother, more efficient driving habits. Know the display and use it as a guide.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure regularly and inflate them to the recommended levels found on the driver’s side door jamb. This simple step can contribute to noticeable fuel savings.

Avoid aggressive driving. Rapid acceleration and hard braking waste fuel and stress the hybrid system. Practice smooth, steady acceleration and anticipate traffic flow to minimize unnecessary braking. Let the hybrid system work optimally by driving with a gentle touch.

Consider the drive mode selector. The NX 300h typically offers different drive modes such as “Eco”, “Normal”, and “Sport”. While “Sport” mode can enhance throttle response, “Eco” mode prioritizes fuel efficiency by adjusting throttle mapping and climate control settings. Use “Eco” mode for everyday driving to extract the best possible MPG. Check out all Lexus fuel economy data to see how these features are tuned across the Lexus lineup.