22 MPG combined is a respectable but average figure for the 2019 Lexus RX 350 L, a three-row luxury SUV aimed at families who want comfort, reliability, and a familiar luxury experience. Fuel economy is a consideration for these buyers, but not necessarily the deciding factor, as they value the Lexus reputation and smooth driving dynamics.

City and highway performance

The RX 350 L achieves its 19 MPG city and 26 MPG highway EPA ratings thanks to a naturally aspirated 3.5L V6 engine paired with an 8-speed automatic transmission. This powertrain prioritizes smooth power delivery over outright efficiency. While turbocharging can improve fuel economy, Lexus buyers often prefer the linear throttle response and proven reliability of a traditional V6. The eight-speed automatic helps to optimize fuel efficiency at higher speeds, contributing to the fairly respectable highway number, but in stop-and-go city driving, the larger engine and heavier vehicle inevitably take their toll.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2019 Lexus RX 350 L at $2,000. This calculation is based on 15,000 miles driven per year, using the national average fuel price at the time of calculation. Individual fuel costs will vary depending on driving habits, location, and current fuel prices, but this figure provides a standardized benchmark for comparison. It’s a helpful number to consider when budgeting for vehicle ownership, and to compare with other vehicles under consideration.

Real-world expectations

While the EPA estimates provide a useful baseline, real-world fuel economy can fluctuate quite a bit. Drivers who spend most of their time in congested urban environments will likely see figures closer to, or even below, the 19 MPG city rating.

Those who primarily drive on open highways at consistent speeds may achieve numbers closer to or even slightly exceeding the 26 MPG highway rating. Driving style plays a significant role; aggressive acceleration and braking will negatively impact fuel economy, while smooth, gradual inputs will help to maximize it. Factors such as tire pressure, vehicle maintenance, and the use of accessories like air conditioning can all influence real-world MPG. Consult owner forums and real-world MPG tracking apps to get a broader understanding of what other RX 350 L owners are actually experiencing.

How it compares

The 2019 Lexus RX 350 L faces competition from other three-row luxury SUVs that offer different fuel economy. The Acura MDX, achieves an EPA-estimated 22 MPG combined in its standard front-wheel-drive configuration, matching the RX 350 L, but offers slightly better highway numbers. The Infiniti QX60 delivers 22 MPG combined. Larger, more powerful options like the Lincoln Aviator with the standard engine and all-wheel drive comes in at 20 MPG combined. Plug-in hybrid options like the Volvo XC90 Recharge offer significantly higher fuel economy on shorter trips when using electric power, but carry a higher price tag. For shoppers who want fuel efficiency above almost all else, there are better choices. But for those who are drawn to the Lexus brand and value its reputation for reliability, the fuel economy is good enough.

Tips to maximize efficiency

The 2019 RX 350 L responds well to smooth driving techniques. Avoid abrupt acceleration and hard braking, as these actions consume more fuel. Anticipate traffic flow and maintain a consistent speed whenever possible.

Ensure that 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, which reduces fuel economy. Check your tire pressure regularly with a reliable gauge.

Minimize the use of air conditioning, particularly on shorter trips. Running the A/C puts extra strain on the engine and decreases fuel efficiency. When possible, opt for recirculated air or simply open the windows.

Keep your RX 350 L properly maintained according to the manufacturer’s recommended service schedule. Regular oil changes, air filter replacements, and properly tuned engine components all contribute to optimal fuel economy. Remember to consult all Lexus fuel economy data if fuel economy is a priority for your ownership experience.

Consider using the “Eco” driving mode if your RX 350 L is equipped with it. This mode remaps the throttle response and adjusts the transmission shift points to prioritize fuel efficiency over performance. It can help at times. You can also research RX MPG across all years to see how this model year compares to others.