The 2019 Lexus GS 350 F Sport’s seductive styling doesn’t change the fact that it gets 22 MPG combined. While not atrocious for a naturally aspirated V6-powered midsize luxury sedan, it’s also far from class-leading. Buyers of this GS model consciously trade fuel savings for driver engagement and old-school charm.

City and highway performance

The EPA estimates the GS 350 F Sport gets 19 MPG in the city and 27 MPG on the highway. The engine displacement and the transmission’s programming explain the somewhat disappointing city figure, as it prioritizes smooth power delivery over aggressive fuel conservation. The 27 MPG highway rating is more respectable on the open road, but still trails competitors with turbocharged four-cylinder engines. Expect the highway MPG to decrease if you frequently engage the “Sport” or “Sport+” drive modes, because these hold lower gears for longer, keeping the engine in its more thirsty upper rev range.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2019 Lexus GS 350 F Sport is $2,650. This is based on driving 15,000 miles per year, with 45% of those miles driven in the city and 55% on the highway, using national average fuel prices. While your actual fuel costs will depend on your individual driving habits, local fuel prices, and the type of fuel you use; this is a useful benchmark. Premium fuel is recommended for optimal performance, which will increase your spending at the pump.

Real-world expectations

Real-world fuel economy can vary significantly from EPA estimates. Drivers who frequently drive aggressively, with heavy acceleration, or spend a lot of time in stop-and-go traffic will likely see lower numbers than the EPA estimates. Those who prioritize smooth acceleration, maintain consistent speeds on the highway, and minimize idling, may be able to approach or even slightly exceed the EPA figures. Many drivers have reported 24 and 25 MPG in the real world. For a more accurate picture of your GS 350 F Sport’s actual fuel economy, use online fuel tracking apps and regularly monitor your fuel consumption.

How it compares

The GS 350 F Sport’s fuel economy is behind some rivals in the competitive midsize luxury sedan segment. The BMW 530i with its turbocharged 2.0-liter four-cylinder engine achieves a combined EPA rating of 27 MPG. The Mercedes-Benz E 300 also boasts a 25 MPG combined rating thanks to its turbocharged four-cylinder. Even the Genesis G80 2.5T, with its turbo four-cylinder, manages a respectable 25 MPG combined. GS 350 F Sport buyers value the smoothness and responsiveness of a naturally aspirated V6 and the Lexus brand’s reputation for reliability over ultimate fuel efficiency, so they tend to be less concerned with squeezing every last mile out of each gallon. Be sure to check GS MPG across all years if you are considering a different model year.

Tips to maximize efficiency

Avoid aggressive acceleration. The GS 350 F Sport’s V6 engine delivers ample power, but heavy acceleration consumes fuel quickly. Gently ease onto the accelerator to minimize fuel consumption, especially in city driving. Anticipate traffic flow and maintain a smooth, consistent speed.

Take advantage of the “Eco” drive mode. The “Eco” mode adjusts engine and transmission settings to prioritize fuel efficiency, though it might slightly dampen the throttle response. This mode is especially useful during highway driving or in situations where maximum performance is not required.

Keep your tires properly inflated. Underinflated tires increase rolling resistance, which reduces fuel efficiency. Check your tire pressure regularly and inflate them to the recommended pressure listed on the driver’s side doorjamb. Make sure your tires all match and are wearing evenly.

Minimize idling. Idling consumes fuel without covering any distance. If you’re stopped for more than a minute, turn off the engine to save fuel. Modern engines are designed to restart quickly and efficiently, making this an easy way to reduce fuel consumption.

Consider reducing your overall weight. Remove any unnecessary items from the trunk to reduce the vehicle’s weight. Even small amounts help, especially in city driving. You should also check out all Lexus fuel economy data to see how MPG differs across the entire lineup.