The 2023 Lexus RX 350’s 2.4L turbocharged four-cylinder achieves 25 MPG combined, a calculated compromise where luxury and comfort are prioritized over outright fuel efficiency. This is not a Prius competitor. It’s a stylish, well-appointed crossover aimed at buyers who value a premium experience and distinctive styling and are willing to accept adequate fuel economy in exchange.

City and highway performance

The EPA estimates 22 MPG in the city and 29 MPG on the highway for the 2023 Lexus RX 350 equipped with the 2.4L turbo-4 and 8-speed automatic transmission. The city figure reflects the stop-and-go nature of urban driving, where the engine spends more time at lower speeds and idling. The highway MPG demonstrates improved efficiency during steady-state driving, made possible partly by the transmission’s ability to cruise in higher gears. Both figures are reasonable for a vehicle of this size and weight, but also illustrate that urban dwellers will likely see the lowest economy from this vehicle.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2023 Lexus RX 350 2.4L is $2,300. This calculation is based on driving 15,000 miles per year and using national average fuel prices. It’s a useful benchmark for comparison, but individual fuel costs will vary depending on personal driving habits, local fuel prices, and the specific blend of city versus highway driving undertaken. Buyers can access all Lexus fuel economy data to weigh operating expenses when comparing vehicles from the brand.

Real-world expectations

While the EPA estimates provide a standardized measure, real-world fuel economy often varies. Expect your mileage to fluctuate based on driving style, traffic conditions, and even weather. Aggressive acceleration, frequent braking, and substantial idling will all reduce observed MPG. Conversely, gentle throttle inputs, consistent speeds, and proactively anticipating traffic flow can help to approach, or even exceed, the EPA estimates. Owners can also find RX MPG across all years in our database.

How it compares

The RX 350’s fuel economy places it in the middle of the pack for luxury crossovers. The Acura MDX, for example, delivers around 22 MPG combined with its standard V6 engine. The BMW X3 xDrive30i, with its turbocharged 2.0-liter four-cylinder, achieves a similar 25 MPG combined EPA rating. Upgrading to a hybrid powertrain improves figures dramatically. The Lexus RX 450h boasts an EPA-estimated 36 MPG combined, a good option for those who prioritize less gas. RX buyers often cross-shop these vehicles, balancing fuel economy with overall performance, features, and brand appeal.

Tips to maximize efficiency

Avoid aggressive acceleration and hard braking. This turbocharged engine responds well to a light foot. Gentle acceleration maximizes fuel efficiency. The RX 350’s 8-speed automatic transmission can become less efficient with constant rapid shifts.

Ensure proper tire inflation. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressures regularly and inflate them to the recommended levels listed on the driver’s side door jamb. Even a small difference in pressure can add up over time.

Minimize idling. Modern engines consume fuel even when idling. If you anticipate a prolonged stop, such as waiting in a parking lot, turn off the engine. Restarting your RX uses far less fuel than idling for several minutes.

Plan your trips efficiently. Combine errands into a single journey to minimize cold starts, as engines are typically less efficient when cold. Avoiding peak traffic hours can also significantly improve fuel economy by reducing stop-and-go driving. A smoother ride is an efficient one.

Service your vehicle regularly. A well-maintained engine is an efficient engine. Follow the manufacturer’s recommended maintenance schedule, including oil changes, air filter replacements, and spark plug inspections. Keeping everything in good working order will help achieve the best possible fuel economy.