26 MPG combined is a respectable, though not class-leading, figure for the 2019 Lexus LS 500h AWD. Crucially, it highlights the compromise buyers accept when choosing this flagship sedan. They prioritize all-weather confidence, the smooth operation of its hybrid powertrain, and the Lexus brand over outright fuel efficiency.

City and highway performance

The LS 500h’s 3.5L V6, working with the electric motor, manages 23 MPG in city driving. Here, the hybrid system shines, using regenerative braking and electric motor assist to minimize fuel consumption during stop-and-go conditions. Highway fuel economy is a more impressive 31 MPG, revealing the engine’s efficiency when cruising at steady speeds. These numbers demonstrate a tangible benefit over the non-hybrid LS 500, particularly if your commute involves significant time spent navigating urban congestion.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2019 Lexus LS 500h AWD at $2,250. This is based on driving 15,000 miles per year and using national average fuel prices. Your actual fuel costs will vary depending on your driving habits, the type of fuel you purchase, and local fuel prices. However, it’s a useful benchmark for comparing the LS 500h against other vehicles and understanding long-term ownership expenses.

Real-world expectations

While the EPA’s estimates provide a standardized baseline, real-world MPG often deviates depending on individual driving style and conditions. Aggressive acceleration, frequent hard braking, and consistent high-speed driving will all negatively impact fuel economy. Conversely, a smooth driving style with gentle acceleration and anticipating traffic flow can help you achieve figures closer to, or even slightly exceeding, the EPA estimates. LS 500h owners will likely prioritize a comfortable ride; thus, achieving the rated numbers or better is entirely feasible.

How it compares

The LS 500h’s fuel economy places it competitively within the luxury hybrid sedan segment, although some rivals do edge it out in specific areas. For instance, the rear-wheel drive version of the same LS 500h achieves a slightly higher combined MPG of 29. The Mercedes-Benz S 560e, a plug-in hybrid, offers superior city fuel economy due to its ability to travel solely on electric power for limited distances, although its higher initial cost and complexity are factors to consider. The BMW 745e xDrive boasts similar plug-in hybrid capabilities, achieving superior figures in electric-only driving, needing you to factor in the added energy expense of regularly charging it compared to the LS 500h’s conventional hybrid approach. Across the LS MPG across all years, you’ll find that Lexus has consistently prioritized smooth hybrid integration, but the AWD variant inherently extracts a MPG penalty. To compare against the alternatives from Lexus, reference all Lexus fuel economy data.

Tips to maximize efficiency

Use the Lexus Drive Mode Select system. Prioritizing “Eco” mode softens throttle response and optimizes the hybrid system for maximum fuel efficiency. This is especially useful during routine commutes and highway cruising where performance demands are minimal.

Gentle acceleration and braking are key to maximizing the hybrid system’s potential. Avoid aggressive pedal inputs, allowing the electric motor to assist during acceleration and regenerative braking to capture energy during deceleration.

Ensure your tires are properly inflated. Under-inflated tires increase rolling resistance, which negatively impacts fuel economy. Check your tire pressures regularly and maintain them at the recommended levels specified on the driver’s side door jamb.

Minimize unnecessary weight in the vehicle. Extra cargo adds to the vehicle’s load, requiring more energy to accelerate and maintain speed. Remove any items you don’t need to reduce fuel consumption.

Plan your routes to avoid stop-and-go traffic whenever possible. Constant acceleration and braking consume significant fuel. By opting for routes with smoother traffic flow, you can improve your overall MPG.