The 2018 Lexus NX 300 AWD F Sport gets 24 MPG combined with its 2.0L 4-cylinder. It’s not especially impressive, but it’s to be expected. Buyers choosing this specific NX configuration aren’t prioritizing ultimate fuel efficiency; they’re after a blend of Lexus luxury, F Sport aesthetics, and the security of all-wheel drive. The fuel economy is simply the price to pay for those features.

City and highway performance

The EPA estimates for the 2018 NX 300 AWD F Sport break down to 22 MPG in the city and 27 MPG on the highway. The city figure reflects the stop-and-go traffic, where the NX 300’s turbocharged four-cylinder works harder. The highway number demonstrates that at a steady cruise, the engine can operate more efficiently, though it still lags behind some competitors. The six-speed automatic transmission, while smooth, could benefit from a few more gears to further optimize fuel consumption at higher speeds. Even with the F Sport designation, aggressive driving will quickly diminish both city and highway fuel economy.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Lexus NX 300 AWD F Sport at $2,400. This figure is based on driving 15,000 miles per year, using a national average fuel price. Your personal fuel costs will vary depending on your driving habits, the type of fuel you buy, and local fuel prices. If you drive significantly more or less than 15,000 miles annually, or if fuel prices in your area are higher than average, you may find yourself spending more or less than this estimated amount. This $2,400 figure provides a benchmark to compare against other vehicles you might be considering.

Real-world expectations

While the EPA estimates provide a standardized comparison, your real-world MPG will fluctuate. Aggressive acceleration, frequent short trips, and extended idling will all negatively impact your fuel economy. On the other hand, gentle driving, consistent highway speeds, and proper tire inflation can help you achieve figures closer to the EPA estimates. The NX 300’s AWD system, while beneficial in adverse weather, adds weight and drivetrain loss, further impacting MPG, especially in city driving. Drivers who prioritize fuel efficiency should drive in “Eco” mode; selecting Sport mode prioritizes performance. Checking NX MPG across all years can give you insight into how others have fared in real-world driving.

How it compares

The NX 300’s fuel economy sits roughly in the middle of its competitive set. The Acura RDX, while sporting a more powerful engine, achieves around 22 MPG combined in AWD guise. The BMW X3 xDrive30i, another popular choice, gets similar MPG to the Lexus, both landing in the low- to mid-20s. The Mercedes-Benz GLC 300 4MATIC offers slightly better fuel economy, often hovering around 25 MPG combined. For buyers considering alternatives, the Volvo XC60 T5 FWD provides noticeably better fuel economy, achieving up to 29 MPG on the highway, but sacrifices the sportier aesthetics of the F Sport and AWD capability. Before assessing the NX 300, consider all Lexus fuel economy data and what is typically available across the Lexus model range.

Tips to maximize efficiency

Being mindful of your driving style can make a difference. Avoid excessive acceleration and maintain a steady speed, especially on the highway. The NX 300’s turbocharger works best when not overworked, so smooth inputs are your friend.

Regular maintenance ensures your NX 300 is running optimally. Keep your tires properly inflated to the recommended pressure listed on the door jamb. A well-maintained engine and properly inflated tires reduce rolling resistance and aerodynamic drag.

Minimize your use of accessories that drain power. Air conditioning, especially on hot days, significantly impacts fuel consumption; use it carefully. Heated seats and other electrical features can contribute to lower MPG.

Consider the routing of your journeys. Avoiding rush hour traffic and planning your routes to minimize stop-and-go driving can save fuel. Highway driving is generally more fuel-efficient than city driving, so strategically plan any longer journeys.

Use the “Eco” driving mode in appropriate situations. It reduces throttle response and adjusts the transmission shift points to prioritize fuel efficiency. While it may diminish performance, it’s effective for maximizing MPG during normal driving, particularly on the highway.