23 MPG combined is a reasonable figure for the 2019 Lexus GS 350, a car engineered for a specific type of driver: one seeking refined power and elegant styling without sacrificing reliability. This isn’t a hybrid chasing maximum efficiency, nor is it a track-focused performance machine. The GS 350 delivers a smooth, quiet, and composed driving experience, and its fuel economy reflects that balance of priorities.

City and highway performance

The EPA estimates for the GS 350 are a result of its 3.5L V6 engine and eight-speed automatic transmission. In city driving, the GS 350 is rated at 20 MPG. This reflects the stop-and-go nature of urban environments, where the engine spends more time idling and accelerating. The smooth power delivery of the V6 still makes city driving pleasant, minimizing jerky movements and contributing to a relaxed feel.

On the highway, the GS 350 achieves 28 MPG. The taller gearing of the eight-speed transmission allows the engine to cruise at lower RPMs, improving fuel economy on long drives. This makes the GS 350 a comfortable and efficient choice for road trips, maintaining a quiet cabin and confident passing power.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2019 Lexus GS 350 is $2,500 per year. This figure is based on driving 15,000 miles per year and using national average fuel prices. Individual fuel costs will vary depending on driving habits, location, and fuel prices in your area. However, $2,500 provides a reasonable benchmark for budgeting fuel expenses.

Real-world expectations

While the EPA estimates provide a standardized baseline, real-world fuel economy can vary. Aggressive driving, frequent short trips, and extreme weather conditions can all negatively impact fuel efficiency. Gentle acceleration, consistent highway speeds, and proper vehicle maintenance can help you achieve or even exceed the EPA estimates.

Some drivers report similar economy to the EPA estimates, but individual results depend on how and where the car is driven.

How it compares

Compared to other luxury sedans in its class, the 2019 Lexus GS 350’s fuel economy is competitive but not class-leading. For example, the BMW 540i xDrive, with its turbocharged inline-six engine, achieves 25 MPG combined. The Genesis G80 3.3T, another popular choice, is rated at 20 MPG combined. The Mercedes-Benz E450 4MATIC manages 25 MPG combined.

Those seeking better fuel economy might consider the hybrid Lexus ES 300h, delivering a remarkable 44 MPG combined. However, the GS 350 buyer isn’t always prioritizing maximum MPG; the refinement of the V6 and the overall Lexus ownership experience are often deciding factors.

Tips to maximize efficiency

The GS 350 benefits from smooth, gradual acceleration. Avoid “jackrabbit” starts and hard braking, as these actions waste fuel. Anticipate traffic flow and maintain a steady speed whenever possible. The eight-speed transmission is designed to keep the engine in its most efficient operating range, so let it do its job.

Ensure your tires are properly inflated to the recommended pressure listed on the driver’s side doorjamb. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure regularly, especially during temperature changes.

Reduce unnecessary weight in the vehicle. Carrying around extra cargo can negatively impact fuel economy. Remove any items from the trunk that are not essential. A lighter vehicle requires less energy to accelerate and maintain speed.

Use the cruise control on long highway drives. Cruise control helps maintain a constant speed, which can improve fuel economy compared to manually controlling the throttle. Be mindful of the terrain and traffic conditions, and disengage cruise control when necessary.

Consider using the “Eco” driving mode if your GS 350 is equipped with it. Eco mode adjusts the throttle response and transmission mapping to prioritize fuel efficiency over performance. While it may slightly reduce acceleration, it can help you save fuel in everyday driving conditions. You can find all Lexus fuel economy data on our website, as well as detailed GS MPG across all years.