The 2021 Lexus LS 500h gets 28 MPG combined. This won’t win any hypermiling contests, but it’s a surprisingly respectable figure for a full-size luxury sedan that prioritizes a quiet cabin and effortless power delivery above all else. This isn’t a car for the budget-conscious, it’s for executives and buyers who value a whisper-quiet cabin, comfortable ride, and Lexus’s unparalleled reputation for reliability. Fuel economy is a consideration, but it’s further down the list than the smooth V6 hybrid powertrain and meticulously crafted interior.

City and highway performance

The LS 500h achieves an EPA-estimated 25 MPG in the city and 33 MPG on the highway. The city figure benefits significantly from the hybrid system’s ability to run solely on electric power at lower speeds and recycle energy through regenerative braking. Highway performance is still commendable, aided by the car’s sleek aerodynamics and the efficient Atkinson-cycle engine that prioritizes fuel efficiency under lighter loads. The complex yet effective automatic (AV-S10) transmission blends the gasoline engine and electric motor outputs smoothly, ensuring great transitions between power sources and squeezing out the best possible mileage in diverse driving conditions.

Annual fuel cost

The EPA estimates the annual fuel cost of the 2021 Lexus LS 500h at $2,050. This figure is based on driving 15,000 miles per year and using national average fuel prices. It’s a useful benchmark for comparing running costs with other vehicles in its class, however, individual expenses will fluctuate based on driving habits and fuel costs in different regions. This expense is unlikely to deter the typical LS 500h owner, who is accustomed to the costs of maintaining a luxury vehicle, but it is something to be aware of when evaluating your overall financial outlay.

Real-world expectations

While the EPA estimates provide a useful baseline, real-world fuel economy will vary depending on individual driving styles and conditions. Aggressive acceleration, frequent hard braking, and extended idling can all negatively impact your MPG. Conversely, smooth, deliberate driving and maximizing the use of cruise control on the highway will help you achieve figures closer to the EPA estimates, or even exceed them. The LS 500h is equipped with various efficiency-focused driving modes, such as Eco, which can also aid in maximizing fuel economy. Be aware that cold weather driving can also decrease your observed fuel economy.

How it compares

Compared to its rivals, the LS 500h holds its own in the fuel economy stakes. For instance, the Mercedes-Benz S560, with its non-hybrid V8, achieves a combined EPA rating of only 20 MPG, a considerable difference. Even the BMW 740i, with its inline-six, manages only 25 MPG combined. The Lexus LS 500, the non-hybrid version of Lexus’ flagship sedan, mirrors that 25 MPG combined rating. Competitors that are plug-in hybrids such as the BMW 745e may offer superior fuel economy if you are disciplined about charging the battery every night. These comparisons matter to the luxury buyer, even if outright fuel cost isn’t the top priority, it is comforting to know that your luxury sedan is relatively efficient compared to its peers. For all Lexus fuel economy data, visit this page.

Tips to maximize efficiency

Use the LS 500h’s Eco mode in appropriate driving conditions. This mode optimizes throttle response and climate control settings to prioritize fuel efficiency. It is most effective during city driving and on flat highway stretches where maximum power isn’t required. Engaging Eco mode helps to minimize energy waste without significantly impeding performance.

Gentle acceleration and smooth braking are key to maximizing the hybrid system’s potential. Avoid abrupt starts and stops, allowing the regenerative braking system to recover energy and recharge the battery. Anticipate traffic flow and maintain a steady speed whenever possible, which minimizes energy consumption and maximizes the electric motor’s assisting role. These are critical in achieving strong fuel economy from the 3.5 liter naturally aspirated engine.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which reduces fuel economy. Refer to the sticker on the driver’s side doorjamb to find the recommended tire pressure for your LS 500h, checking pressure during temperature shifts. Maintaining proper tire pressure is a simple yet effective way to improve your MPG and tire lifespan across all LS MPG across all years.

Minimize idling time. Idling consumes fuel without moving the vehicle, especially when the internal combustion engine runs. If you anticipate being stationary for more than a minute or two, turn off the engine. The LS 500h’s smooth restart system ensures you an instantaneous restart.