28 MPG combined. That’s the EPA figure for the 2020 Lexus LS 500h, and it places this hybrid luxury sedan in a unique position. It’s not the most efficient choice, nor is it a gas-guzzler. Instead, it represents a compromise, a blend of Lexus refinement, technological elements, and lower fuel costs that appeals to a specific clientele. These are buyers who appreciate the LS’s quiet cabin, its smooth ride, its reputation for unwavering reliability, and the statement it makes. Fuel economy is a factor, but just one piece of a larger picture.

City and highway performance

The LS 500h delivers 25 MPG in city driving and 33 MPG on the highway. The city figure is respectable for a large sedan, reflecting the benefits of the hybrid system’s ability to capture and redeploy energy during stop-and-go traffic. Electric-only propulsion is possible at low speeds and during light acceleration, reducing fuel consumption compared to a conventional gasoline engine. On the highway, the LS 500h uses its aerodynamic design and the efficiency of the 3.5L V6 Atkinson-cycle engine.

The automatic transmission (AV-S10) helps keep the engine in its optimal efficiency range at higher speeds, contributing to the commendable highway MPG figure. Aggressive driving will see the highway number drop, particularly above 75 mph.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,050 for the 2020 Lexus LS 500h. This figure is based on driving 15,000 miles per year, with 55% of those miles driven in the city and 45% on the highway. The calculation also uses the national average fuel price at the time of the estimate.

Keep in mind that your actual fuel costs may vary depending on your driving habits, the type of fuel you use, and the prevailing fuel prices in your area. $2,050 provides a benchmark for understanding the LS 500h’s fuel expenditure.

Real-world expectations

While the EPA estimates provide a standardized comparison point, real-world fuel economy can vary significantly. Drivers in congested urban areas may see figures closer to the 25 MPG city rating, while those who spend most of their time on open highways could achieve or even exceed the 33 MPG highway rating. Driving style plays a role, as does maintenance, keeping tires properly inflated and adhering to the recommended service schedule will help maintain optimal fuel efficiency.

How it compares

Compared to its competitors, the LS 500h occupies an interesting middle ground. The non-hybrid LS 500, with its twin-turbo V6, manages only 21 MPG combined. A Mercedes-Benz S 560 gets around 19 MPG combined. The hybrid BMW 745e, while offering a plug-in hybrid option, achieves an EPA-rated 22 MPG combined. These numbers illustrate the advantage the LS 500h offers in terms of fuel economy within its class. Understanding all Lexus fuel economy data is an important component when determining which luxury sedan is right for you.

Comparing the LS MPG across all years might uncover better fuel saving strategies if you can buy used. This comparison matters because LS buyers, although not solely focused on fuel economy, still appreciate value and minimizing expenses, especially considering the overall cost of ownership for a luxury vehicle.

Tips to maximize efficiency

Take advantage of the LS 500h’s drive modes. The ‘Eco’ mode prioritizes fuel efficiency by adjusting throttle response and climate control settings. Using Eco mode, especially during city driving, can noticeably improve your MPG.

Practice smooth acceleration and braking. The hybrid system benefits from gentle driving habits, allowing it to recover more energy during deceleration. Avoid aggressive starts and hard braking whenever possible.

Keep your tires properly inflated. Underinflated tires increase rolling resistance, which can significantly reduce fuel economy. Check your tire pressure regularly and maintain it at the recommended level, which can be found on a sticker inside the driver’s side doorjamb.

Minimize idling. If you anticipate being stopped for more than a minute, turn off the engine. The hybrid system makes restarting saves fuel compared to idling.

Reduce unnecessary weight. Carrying extra weight in your vehicle reduces fuel economy. Remove any unnecessary items from the trunk or rear seats to lighten the load.