44 MPG combined is exceptional fuel economy for a mid-size luxury sedan. The 2021 Lexus ES 300h achieves this figure through its hybrid powertrain, offering a blend of efficiency and Lexus refinement. This attracts buyers who want a comfortable, reliable, and fuel-efficient car, and who may not be as interested in high performance or sporty handling.

City and highway performance

The EPA estimates the 2021 Lexus ES 300h at 43 MPG in the city and 44 MPG on the highway. These consistent numbers show the hybrid system’s effectiveness. In urban environments, electric assistance helps, reducing gas use during stop-and-go traffic. On the open road, the ES 300h maintains impressive efficiency, proving its ability to sustain high MPG even at cruising speeds. These figures show the ES 300h’s suitability for daily commutes and longer road trips.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Lexus ES 300h at exactly $1,000. This is based on driving 15,000 miles per year and using the national average fuel price. For drivers covering significant mileage, or those living in areas with higher fuel costs, the savings from the ES 300h can add up. Lower running costs are associated with hybrid vehicles, such as reduced brake wear due to regenerative braking, and the financial benefits become more obvious.

Real-world expectations

The EPA’s numbers provide a benchmark, but real-world MPG can change based on driving habits, terrain, and weather. Owners generally report achieving figures close to the EPA estimates, especially with careful driving. Aggressive acceleration and prolonged high-speed driving may result in slightly lower fuel economy. Smooth acceleration, effective regenerative braking, and avoiding unnecessary idling can often improve fuel economy beyond the EPA’s estimates. Read our ES MPG across all years for comparisons.

How it Compares

The ES 300h’s fuel economy is impressive for its class. The non-hybrid Lexus ES 350 offers a more powerful V6 engine, but it uses more fuel, achieving around 26 MPG combined. Other competitors, like the Acura TLX, typically get MPG in the mid-20s. Even hybrid rivals like the Toyota Avalon Hybrid, are closely matched, but sometimes fall slightly short of the ES 300h’s numbers. This matters for buyers who view fuel economy as a primary factor, and are willing to prioritize it over performance.

You can also view all Lexus fuel economy data.

Tips to Maximize Efficiency

Accelerate smoothly. The Lexus ES 300h’s hybrid system is most efficient when you accelerate gently, allowing the electric motor to help the gasoline engine. Avoid quick starts and sudden bursts of speed, because these actions force the engine to work harder and consume more fuel.

Use regenerative braking. The ES 300h uses regenerative braking to capture energy during deceleration. Anticipate stops and coast when possible, allowing the system to recover energy and recharge the battery, maximizing fuel economy and reducing strain on the vehicle braking system.

Keep your tires properly inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder and reducing fuel efficiency. Regularly check your tire pressure and ensure it meets the manufacturer’s recommended levels, typically found on a sticker inside the driver’s side doorjamb. This is a simple measure that can yield improvements.

Minimize how much you use accessories. Features like air conditioning and heated seats can increase engine load and reduce fuel economy. Use them sparingly, especially during short trips. When possible, opt for natural ventilation or adjust the temperature to a moderate setting to minimize their impact.

Plan your routes strategically. Optimizing driving routes can improve fuel economy. Avoid congested areas and choose routes with fewer stops. Use navigation apps to find the most efficient path to your destination, taking into account traffic and road closures.