26 MPG combined isn’t going to win the 2020 Lexus LS 500h AWD any hypermiling awards, but this car is a comfortable space with leather, wood, and impeccable engineering. It’s designed to transport its occupants in quiet comfort, regardless of weather conditions. This is a vehicle for buyers who prioritize a quiet, refined driving experience, advanced technology, and the unwavering reliability Lexus is known for; fuel economy, while important, isn’t usually at the top of their list.

City and highway performance

The EPA estimates the LS 500h AWD at 23 MPG in the city and 31 MPG on the highway. The city figure reflects the hybrid powertrain’s ability to use its electric motor at lower speeds, providing assistance and reducing reliance on the gasoline engine. It’s a respectable number considering the vehicle’s size and weight. The 31 MPG highway rating is reasonable, demonstrating the efficiency of the 3.5-liter V6 working with the electric motor at steady cruising speeds. Keep in mind that aggressive driving in either environment will negatively impact these figures; smoothness and anticipation are your allies in maximizing efficiency.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2020 Lexus LS 500h AWD at $2,250. This figure is based on driving 15,000 miles per year and using national average fuel prices. The LS 500h requires premium gasoline, so fluctuations in those prices will directly affect your actual annual fuel expenditure.

Real-world expectations

The EPA provides a standardized benchmark, but your real-world fuel economy will vary based on driving habits, traffic conditions, and even tire pressure. Drivers who accelerate quickly or those frequently in stop-and-go traffic will likely observe figures closer to the lower end of the EPA range. However, those who prioritize smooth acceleration, maintain consistent speeds, and use the hybrid system’s regenerative braking capabilities can likely achieve results at or even slightly above the EPA estimates. Location and weather conditions also play a role. Frequent usage of air conditioning or heating will also affect MPG.

How it compares

The LS 500h competes in a segment where efficiency isn’t always the primary focus, but hybrid technology offers an advantage. The BMW 745e xDrive, a plug-in hybrid, delivers an EPA-estimated 22 MPG combined when operating as a hybrid, but has a significantly higher MPGe (miles per gallon equivalent) when using its electric range. The Mercedes-Benz S 560 4MATIC, a traditional gasoline-powered competitor, achieves around 19 MPG combined. The Audi A8, depending on the engine configuration, is around the low 20s for combined MPG. For those considering all Lexus fuel economy data, the LS 500h offers a good mix of luxury and efficiency compared to purely gasoline-powered competitors. However as the LS MPG across all years indicates, there are other options available that should also be considered within the luxury family if pure fuel economy is a concern.

Tips to maximize efficiency

Use the “EV” mode for short trips at low speeds. The electric motor provides instant torque and allows the gasoline engine to remain off during these scenarios, significantly reducing fuel consumption.

Pay close attention to the multi-information display on the dashboard, particularly the energy monitor. This display provides real-time feedback on the hybrid system’s operation, allowing you to adjust your driving style to improve electric motor use and regenerative braking.

Ensure your tires are properly inflated to the recommended pressure. Underinflated tires increase rolling resistance, which leads to decreased fuel economy. Regularly check your tire pressure, especially during temperature changes.

Anticipate traffic flow and avoid sudden acceleration or braking. Smooth, gradual inputs allow the hybrid system to operate efficiently and improve regenerative braking.

Consider using the “Eco” driving mode, which optimizes throttle response and climate control settings for better fuel economy. While it may slightly reduce performance, it can make a noticeable difference over time.