24 MPG combined is a perfectly acceptable figure for the 2019 Lexus GS 300 F Sport 2.0L. It hardly sets a new benchmark for fuel sippage, but for buyers seeking a refined and sporty mid-size luxury sedan with a reputation for ironclad reliability, this number likely falls somewhere between “acceptable” and “irrelevant.” These drivers prioritize the GS’s sculpted lines, comfortable interior, and the inherent peace of mind that comes with the Lexus badge over squeezing every last mile from a gallon of premium.

City and highway performance

The EPA estimates 21 MPG in the city and 30 MPG on the highway for the 2019 GS 300 F Sport. That highway number reflects the benefits of the 2.0L turbocharged four-cylinder engine paired with an eight-speed automatic transmission. The GS F Sport is tuned for responsive acceleration and engaging handling, but the tall overdrive gears in the transmission help keep RPMs low and fuel consumption minimal during steady-state cruising. City driving, with its stop-and-go nature, is less conducive to efficiency, but the engine’s smooth power delivery and the transmission’s shifts contribute to a reasonably civilized experience. These ratings put it right in line with what’s expected, and shouldn’t come as a surprise to any GS owner. This information is available on our page covering GS MPG across all years.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2019 Lexus GS 300 F Sport 2.0L is $2,400. This figure is based on driving 15,000 miles per year and using the national average fuel price for premium gasoline, which is what Lexus recommends for optimal performance and longevity. Keep in mind that your actual fuel costs may vary depending on your driving habits, the type of roads you typically drive on, and fluctuations in fuel prices. If you live in an area with higher fuel costs, or drive more aggressively, expect to spend more than the EPA estimate.

Real-world expectations

While the EPA estimates provide a standardized benchmark for comparing fuel economy across different vehicles, real-world MPG can differ significantly depending on individual driving habits and conditions. Drivers who frequently engage in aggressive acceleration, hard braking, or extended idling will likely see lower fuel economy than the EPA estimates. Conversely, those who prioritize smooth acceleration, maintain consistent speeds, and anticipate traffic flow can often achieve numbers that meet or even exceed the EPA ratings. Environmental factors such as weather conditions, road surfaces, and altitude can also influence fuel efficiency.

How it compares

In the competitive mid-size luxury sedan segment, the 2019 Lexus GS 300 F Sport’s fuel economy is average. The BMW 530i, with its 2.0L turbocharged engine, achieves an EPA-rated 27 MPG combined. The Mercedes-Benz E300, also powered by a 2.0L turbo, shows an estimated 25 MPG combined. The Acura TLX, depending on the engine and drivetrain configuration, ranges from 21 to 25 MPG combined. What those cars don’t offer is the peace of mind of Lexus ownership; many GS buyers gladly accept the negligible efficiency tradeoff for that benefit. It’s also important to note that all Lexus fuel economy data is consistently reliable, unlike certain competitors who may struggle to replicate EPA numbers.

Tips to maximize efficiency

The 2019 GS 300 F Sport provides a “Normal” and “Eco” mode. For fuel-conscious driving, ensure the vehicle is set to “Eco” mode, as this prioritizes fuel economy by adjusting throttle response and climate control settings, though it does compromise on acceleration. This is especially effective in urban environments where frequent stop-and-go driving is the norm.

Regularly check your tire pressure and ensure that your tires are inflated to the recommended pressure, which can be found on a sticker inside the driver’s side doorjamb. Underinflated tires increase rolling resistance, which can significantly reduce fuel economy. Be sure that you are using the correct tire for the vehicle to further maximize efficiency.

Avoid aggressive driving habits such as rapid acceleration, hard braking, and excessive speeding. These actions consume more fuel and put unnecessary strain on the engine. Smooth, gradual acceleration and anticipating traffic flow can significantly improve fuel economy.

Consider removing any unnecessary weight from the vehicle. Extra weight increases fuel consumption, so removing items that you don’t need can help improve fuel efficiency, even if only marginally. Check the trunk and back seat regularly to see if there’s anything you can leave at home.