25 MPG combined is a modest figure for the 2021 Lexus NX 300 2.0L 4-cyl, but it’s a trade-off many buyers are willing to accept for the vehicle’s blend of luxury, reliability, and manageable size. This isn’t a hybrid or a plug-in hybrid; it’s a conventional gasoline-powered compact SUV designed for those who prioritize a smooth ride and a premium experience over ultimate fuel efficiency. The NX 300 is a popular choice for urban professionals and empty-nesters who want a little bit of luxury without the bulk of a larger SUV, and its fuel economy reflects that compromise.

City and highway performance

The EPA estimates for the 2021 Lexus NX 300 break down to 22 MPG in the city and 28 MPG on the highway. This split reflects the nature of the turbocharged 2.0L engine and the six-speed automatic transmission. In stop-and-go city driving, the NX 300’s fuel consumption is at its highest, affected by frequent acceleration and deceleration. On the highway, the engine settles into a more efficient cruising mode, delivering closer to the promised 28 MPG, provided you maintain reasonable speeds and avoid aggressive driving. Considering the NX 300’s all-wheel-drive availability (which marginally lowers fuel economy), these figures are reasonable for its class.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2021 Lexus NX 300 is approximately $2,300. This figure is based on driving 15,000 miles per year and using national average fuel prices. It’s important to remember that this is an estimate, and your actual fuel costs may vary depending on your driving habits, the type of fuel you use, and local fuel prices. Aggressive driving, frequent short trips, and using premium fuel when it’s not required can all increase your annual fuel expenses. The EPA uses these standardized factors so that consumers can easily compare costs between vehicles.

Real-world expectations

While the EPA estimates provide a baseline, real-world fuel economy can vary significantly. Drivers have reported figures close to the EPA estimates, particularly on longer highway journeys. However, if your daily commute involves heavy traffic, expect to see your average MPG closer to the city estimate. Factors such as tire pressure, ambient temperature, and the use of accessories like air conditioning can also influence fuel consumption. Regularly tracking your fuel economy can give you a more accurate picture of what to expect in your specific driving conditions. And if you are looking for NX MPG across all years, be sure to explore that information.

How it compares

The 2021 Lexus NX 300’s fuel economy is competitive within the luxury compact SUV segment, but it is not class-leading. For comparison, the Acura RDX achieves a combined 23 MPG with its turbocharged 2.0L engine, slightly lower than the NX 300. The BMW X3 sDrive30i, with its similarly sized engine, manages a combined 25 MPG, matching the NX. However, the hybrid versions of these SUVs, like the Lexus NX 300h, offer significantly better fuel economy, often exceeding 30 MPG combined. Buyers prioritizing fuel efficiency above all else might consider those hybrid alternatives, or even look at all Lexus fuel economy data and consider other plug-in options within the brand. The Infiniti QX50 with its VC-Turbo engine is another option that targets similar buyers, however tends to sacrifice reliability for the sake of a unique engine. Ultimately, the NX 300 buyer typically values the Lexus brand reputation and smooth driving experience, accepting the fuel economy as a reasonable trade-off.

Tips to maximize efficiency

The Lexus NX 300 responds well to a smooth and steady driving style. Avoid aggressive acceleration and braking, as these habits significantly impact fuel consumption. Anticipate traffic flow and maintain a consistent speed whenever possible. The turbocharged engine delivers adequate power, so there’s no need to constantly push it to its limits.

Ensure your tires are properly inflated to the recommended pressure, which can be found on a sticker inside the driver’s side doorjamb. Underinflated tires increase rolling resistance, leading to decreased fuel economy. Check your tire pressure regularly, especially during changes in temperature.

Reduce unnecessary weight in the vehicle. Extra cargo in the trunk adds to the vehicle’s overall weight, requiring the engine to work harder and consume more fuel. Remove any items you don’t need on a regular basis. You will see improvements with a lighter load.

Minimize idling time. If you’re stopped for more than a minute, turn off the engine. Modern engines are designed to restart quickly and efficiently, and idling wastes fuel. This is an especially important consideration in urban environments, where idling is more frequent.

Use cruise control on the highway. Maintaining a consistent speed on long drives can improve fuel economy. Cruise control helps prevent unintended acceleration and ensures the engine is operating at its most efficient level for the given speed.