26 MPG combined might not sound thrilling in a world of hybrids and EVs, but it’s an acceptable figure for the 2020 Lexus ES 350 3.5L 6-cyl. More importantly, it’s an expected figure. This isn’t a car bought by early adopters chasing ultimate efficiency; it’s a car bought by drivers who appreciate a smooth, reliable, and comfortable luxury experience above all else. They’re willing to trade a few MPGs for the linear power delivery and refined character of a naturally aspirated V6 engine and they’re buying into the Lexus reputation for bulletproof reliability.

City and highway performance

The EPA estimates the 2020 ES 350 at 22 MPG in the city and 32 MPG on the highway. The city figure reflects stop-and-go driving, where the engine is constantly accelerating and decelerating, conditions which can impact a vehicle that isn’t electric. The highway figure, however, shows the benefits of the ES 350’s smooth-shifting eight-speed automatic transmission (S8). At steady cruising speeds, the engine settles into a more efficient range, making long road trips fairly economical, or at least economical enough to not concern its target demographic.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2020 Lexus ES 350 at exactly $1,700. This figure is based on driving 15,000 miles per year and using national average fuel prices. Keep in mind that this is an estimate, and your actual fuel costs will vary depending on your driving habits, the type of fuel you use (the ES 350 requires premium gasoline), and local fuel prices. Someone who drives mostly highway miles and uses a light foot could easily beat that estimate and drivers with consistently aggressive habits or those who drive predominantly in the city will likely face a higher annual fuel bill.

Real-world expectations

EPA figures provide a useful baseline, but real-world fuel economy can vary. ES 350 owners report figures close to the EPA estimates, with some achieving slightly better results on long highway journeys. Aggressive driving, frequent hard acceleration, and consistent use of Sport mode will decrease fuel efficiency, and a relaxed driving style and consistent use of Eco mode can help to improve mileage. The ES 350 delivers predictable and consistent fuel economy, closely aligned with its EPA ratings. See ES MPG across all years for more historical data.

How it compares

Compared to other luxury sedans in its class, the 2020 Lexus ES 350 holds its own but doesn’t necessarily lead the pack in fuel economy. For example, the Acura TLX with the 3.5L V6 engine achieves an EPA-estimated 20 MPG city and 31 MPG highway, making it slightly less efficient on paper. The BMW 530i, with its turbocharged 2.0L four-cylinder engine, boasts significantly better fuel economy at 25 MPG city and 33 MPG highway, but sacrifices the smooth, linear power delivery of the ES 350’s V6. A Mercedes-Benz E350, also with a turbocharged 2.0L four-cylinder, manages 23 MPG city and 31 MPG highway. Buyers choosing the ES 350 aren’t prioritizing fuel efficiency above all other factors. They’re likely weighing the benefits of the V6 engine’s performance and reputation against the fuel savings offered by some competitors’ smaller, turbocharged engines. Be sure to check out all Lexus fuel economy data.

Tips to maximize efficiency

Use the ES 350’s Eco mode in city driving. Eco mode alters the throttle response and transmission shift points to prioritize fuel efficiency over performance. While the difference may not be dramatic, consistent use can lead to savings over time, especially in stop-and-go traffic where aggressive acceleration is less necessary.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure regularly and inflate your tires to the recommended pressure listed on the driver’s side doorjamb. A small investment in a tire pressure gauge can save you money on gas and extend the life of your tires.

Anticipate traffic flow and avoid unnecessary braking. Smooth, predictable driving requires less energy than constantly accelerating and braking. By looking ahead and anticipating traffic patterns, you can minimize the need for sudden stops and starts, preserving momentum and improving fuel efficiency during your daily drive.

Minimize idling. Idling consumes fuel without covering any distance. If you anticipate being stopped for more than a minute or two, turn off the engine. Modern cars are designed to restart quickly and efficiently, so you won’t experience any significant wear and tear by turning the engine off and on in these situations.