The 2024 Lexus RX 350 AWD with the 2.4L 4-cylinder engine gets 24 MPG combined. While that’s not class-leading, it’s a reasonable trade-off for buyers seeking a comfortable, reliable, and luxurious SUV. Many owners prioritize the RX’s dependability and plush interior over maximum fuel savings, understanding that they’re investing in long-term peace of mind. Considering its all-wheel drive system and generally elevated fuel consumption among SUVs, the RX 350’s fuel economy is what you’d expect.

City and highway performance

The EPA estimates the RX 350 AWD will achieve 21 MPG in the city and 28 MPG on the highway. The city figure reflects the fuel demands of stop-and-go traffic and idling, while the highway number assumes a steady cruising speed. The 2.4L turbocharged engine, paired with an 8-speed automatic transmission, delivers adequate power for merging and passing. It’s calibrated for smooth, predictable acceleration and comfortable highway miles, which contributes directly to the observed fuel consumption. The all-wheel drive system, while beneficial in inclement weather, adds weight and parasitic loss, further impacting economy, especially at lower speeds.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2024 Lexus RX 350 AWD is $2,400. This figure is calculated based on driving 15,000 miles per year, using an assumed fuel price reflecting the national average. Individual fuel costs may vary depending on local fuel prices, driving habits, and the proportion of city versus highway driving. This $2,400 figure provides a standardized benchmark for comparing fuel expenses with other vehicles.

Real-world expectations

While the EPA provides a standardized test, real-world fuel economy often differs. Factors like aggressive acceleration, frequent hard braking, carrying extra weight, and using accessories like air conditioning can all decrease fuel economy. Owners who primarily drive in dense urban areas with frequent congestion may see figures closer to the city estimate, while those who spend more time on open highways may achieve results approaching or even exceeding the highway estimate. Monitoring your RX 350’s trip computer can provide a more accurate understanding of your individual fuel consumption patterns. Keep in mind that colder weather tends to reduce MPG, particularly on shorter trips.

How it compares

Compared to other luxury SUVs, the RX 350 AWD’s fuel economy is competitive but not the best in its class. The Acura MDX SH-AWD, for example, achieves a combined 21 MPG with its V6 engine, which is less economical. The BMW X3 xDrive30i, with its 2.0L turbo-4, manages a slightly better 25 MPG combined. The Volvo XC60 B5 AWD is close, at 25 MPG combined. These differences may matter less to the typical RX buyer, who places greater value on the Lexus’s reputation for reliability and lower long-term running costs, and if fuel economy is a top priority, the RX 450h+ plug-in hybrid, or exploring all Lexus fuel economy data, could make a better choice.

Tips to maximize efficiency

Gentle acceleration and smooth braking are crucial for maximizing fuel economy in any vehicle, including the RX 350. Avoid abrupt starts and stops, and anticipate traffic flow to maintain a consistent speed. The turbocharged 2.4L engine responds well to a light foot on the accelerator, and unnecessary bursts of power will quickly decrease your MPG.

Regular maintenance, specifically tire inflation and air filter replacement, will optimize the RX 350’s efficiency. Underinflated tires increase rolling resistance, forcing the engine to work harder. A clean air filter ensures optimal airflow to the engine, promoting efficient combustion. Look at the RX’s owner’s manual for recommended maintenance intervals.

Minimize idling time whenever possible. Modern engines consume fuel even when stationary, particularly during cold starts. If you think you will be stationary for more than a minute, turn off the engine. This is especially important in urban environments and during errands that involve frequent stops.

Avoid carrying unnecessary weight in the vehicle. Extra cargo increases the load on the engine and reduces fuel economy. Remove any non-essential items from the trunk and rear seats to minimize this effect. Small improvements add up over time, particularly given that you will likely own this vehicle for many years given the outstanding RX MPG across all years.