23 MPG combined is what you can expect with the 2017 Lexus RX 350. This figure isn’t likely to set hearts racing but it’s perfectly acceptable for the crossover’s target audience. This isn’t a vehicle chasing hyper-miling records. It’s a comfortable, reliable, and luxurious way for suburban professionals and empty-nesters to get around. They prioritize refinement and a smooth ride over outright fuel efficiency and accept its fuel economy which is the cost of doing business in the luxury crossover segment.

City and highway performance

The 2017 RX 350 achieves its 20 MPG city and 27 MPG highway figures thanks to a well-proven 3.5L V6 engine paired with an eight-speed automatic transmission. This isn’t a turbocharged engine demanding premium fuel or requiring a particularly delicate touch. It’s a naturally aspirated V6 known for its smooth power delivery and long-term reliability. The eight-speed automatic helps optimize both acceleration and fuel economy, keeping the engine in its sweet spot whether navigating stop-and-go traffic or cruising at highway speeds. Expect the city figures to be a bit lower if you regularly encounter heavy congestion, and the highway numbers might climb slightly during sustained highway driving below 70 mph.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2017 Lexus RX 350 is $1,900. This calculation is based on driving 15,000 miles per year and using national average fuel prices. Keep in mind that this figure is a guideline. Your actual fuel costs will vary depending on your driving habits, the type of driving you do, and local gas prices. Someone who primarily drives short distances in the city is likely to spend more than $1,900, while someone who does mostly highway commuting might spend less.

Real-world expectations

While the EPA estimates provide a benchmark, real-world fuel economy often differs. Many RX 350 owners report achieving figures close to the EPA estimates, but factors like aggressive driving, carrying extra weight, and using accessories like air conditioning can reduce fuel efficiency. The all-wheel-drive version of the RX 350 also typically sees a slight dip in MPG compared to the front-wheel-drive model. The quality of gasoline can impact MPG too, so it’s best to use quality gasoline from well-known retailers.

How it compares

The RX 350’s fuel economy places it squarely in the middle of its competitive set. The Acura MDX, another popular luxury crossover, achieves around 22 MPG combined with its V6 engine. The BMW X3 xDrive30i, with its turbocharged four-cylinder, manages a slightly better 25 MPG combined, but it offers a different driving experience. The Lexus NX 300h hybrid variant provides a significant fuel economy advantage, achieving 31 MPG combined. Someone prioritizing fuel efficiency above all else might compare the RX 350 with the NX hybrid. For 2017, the Volvo XC90 T6, gets 22 MPG combined. Consider all Lexus fuel economy data and weigh your options carefully. Also, check out RX MPG across all years.

Tips to maximize efficiency

The 2017 RX 350 is equipped with an “Eco” mode, which adjusts throttle response and climate control settings to prioritize fuel efficiency. Use this mode during everyday driving, especially in stop-and-go traffic, to eke out a few extra miles per gallon.

Regular maintenance is important for optimal fuel economy. Ensure your tires are properly inflated, as underinflated tires increase rolling resistance and reduce MPG. Also, keep up with scheduled maintenance, such as oil changes and air filter replacements, to keep the engine running smoothly.

Avoid aggressive driving habits such as rapid acceleration and hard braking. These actions consume more fuel than smooth, predictable driving. Maintain a steady speed on the highway and anticipate traffic flow to minimize the need for sudden speed changes.

Excess weight reduces fuel economy. Remove any unnecessary items from the vehicle’s trunk or cargo area. Reducing the load the engine has to carry will translate to better MPG, especially in city driving.

Limit idling time. If you’re stopped for more than 30 seconds, turn off the engine. Modern engines are designed to restart quickly and efficiently, and idling consumes fuel without moving the vehicle.