23 MPG combined isn’t the Lexus RX 350’s strongest selling point, but it likely won’t deter its core buyer either. This SUV prioritizes smooth operation, a plush ride, and high reliability over outright fuel efficiency. It’s a conscious trade-off that Lexus customers have historically embraced, particularly those prioritizing luxury and a stress-free ownership experience over squeezing every last drop out of a gallon of gasoline.

City and highway performance

The 2019 RX 350, equipped with its 3.5L V6 and eight-speed automatic transmission, achieves an EPA-estimated 20 MPG in the city and 27 MPG on the highway. The city figure reflects the engine’s power and the vehicle’s weight, while the highway number is respectable but not class-leading. The RX 350 delivers its power smoothly and predictably, whether navigating stop-and-go traffic or cruising at higher speeds. While other SUVs may boast slightly better EPA numbers, few can match the RX’s effortless character during daily driving.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2019 Lexus RX 350 is $1,900. This calculation is based on driving 15,000 miles per year, with a roughly 55/45 split between city and highway driving, using national average fuel prices. Your actual fuel costs may vary based on your driving habits, the type of fuel you use, and fluctuations in gasoline prices. However, $1,900 provides a standardized estimate for comparing fuel costs across different vehicles. For those who put significantly higher mileage on their vehicles, that $1,900 figure will certainly increase.

Real-world expectations

While EPA estimates provide a useful comparison point, real-world fuel economy can differ.

The 2019 RX 350’s actual MPG often lands within a reasonable range of the official numbers, particularly when driven conservatively. Aggressive acceleration, frequent short trips, and consistent use of air conditioning can all negatively impact fuel economy. The RX’s all-wheel-drive variant will likely see a slight dip in MPG compared to the front-wheel-drive model. Drivers prioritizing fuel savings should check RX MPG across all years, as those figures may influence used-car buying decisions.

How it compares

Compared to its competitors, the 2019 Lexus RX 350’s fuel economy is middle-of-the-road. The Acura MDX, offers a similar driving experience, with its standard V6, and achieves around 22 MPG combined. Some turbocharged four-cylinder competitors, such as the Volvo XC60 T5, achieve slightly better numbers, hovering around 24 MPG combined. Meanwhile, the BMW X3 xDrive30i, with its turbocharged four-cylinder, also nets around 24 MPG combined. The RX 450h hybrid variant offers a significant advantage in fuel economy, boasting around 30 MPG combined, a more efficient option for those prioritizing fuel savings within the Lexus lineup. If you are interested in all Lexus fuel economy data, it is important to compare and contrast each model.

Tips to maximize efficiency

The Lexus RX 350 is not inherently inefficient for its class and size, but mindful driving habits can improve fuel economy. Resist hard accelerations, especially from a standstill. Gradual, smooth takeoffs will reduce the amount of fuel injected into the engine, optimizing efficiency.

Maintain a consistent speed on the highway. The RX 350’s eight-speed transmission is geared to maximize fuel economy at cruising speeds, but exceeding 70 mph significantly increases drag, forcing the engine to work harder and consume more fuel. If possible, activate cruise control on long highway drives, as this feature minimizes unnecessary acceleration and braking.

Ensure your tires are properly inflated. Underinflated tires create more rolling resistance, requiring the engine to expend more energy to maintain speed. Check your tire pressure regularly and inflate them to the recommended pressure listed on the driver’s side doorjamb. Properly inflated tires also extend the life of your tires, saving you money in the long run.

Minimize idling. The RX 350 consumes fuel even when stationary with the engine running. If you anticipate waiting for more than a minute, turn off the engine. Modern vehicles are designed for quick restarts, and reducing idling time can contribute to noticeable fuel savings over time.