19 MPG combined isn’t going to win any fuel-sipping awards, but for the 2015 Lexus LS 460 L with its 4.6L V8, it’s a known quantity, an accepted compromise. Nobody buying a long-wheelbase LS is prioritizing fuel economy above all else. They’re seeking quiet comfort, a cossetting ride, and the quiet confidence that comes with Lexus’ renowned reliability. The V8 provides effortless thrust that complements the relaxed and refined character of this flagship sedan.

City and highway performance

The EPA estimates 16 MPG in the city and 24 MPG on the highway for this particular LS 460 L configuration. The city figure is understandable given the engine’s displacement and the car’s heft; stop-and-go traffic is where fuel economy suffers most. The highway number is more respectable, reflecting the benefits of the eight-speed automatic transmission which allows the engine to cruise at lower RPMs, contributing to reduced fuel consumption over long distances. However, even on the highway, enthusiastic use of that smooth V8 will see those numbers drop.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2015 Lexus LS 460 L 4.6L V8 is $3,050. This calculation is based on driving 15,000 miles per year and using the national average fuel price at the time of calculation. While average fuel prices fluctuate, this figure offers a benchmark for owners to consider. Factor in the price of premium gasoline, which is recommended for optimal performance, and that $3,050 figure could easily climb higher depending on driving habits and local fuel costs.

Real-world expectations

While the EPA figures provide a baseline, real-world mileage will vary. Driving style plays a significant role; aggressive acceleration and frequent hard braking will drastically reduce fuel economy. Gentle acceleration and anticipating traffic flow can help drivers approach the EPA estimates. Factors like tire pressure, vehicle maintenance, and even the use of air conditioning can influence fuel consumption.

Owners who spend a considerable amount of time in congested urban environments should anticipate results closer to the city MPG rating, whereas those who frequently embark on long highway journeys may see figures approaching or even exceeding the 24 MPG highway estimate.

How it compares

Compared to its competitors, the 2015 Lexus LS 460 L’s fuel economy sits within the expected range for a large luxury sedan with a V8 engine. The BMW 750Li achieves around 16 MPG city and 25 MPG highway, very similar to the LS. The Mercedes-Benz S550 is also in this ballpark. The Audi A8 with its supercharged V6 offers slightly better fuel economy, achieving around 19 MPG city and 29 MPG highway. These differences are important to LS buyers; while pure efficiency isn’t the top priority, running costs are always a consideration.

The LS’s reputation for bulletproof reliability often outweighs a marginal difference in MPG for many buyers. See LS MPG across all years for a broader comparison.

Tips to maximize efficiency

The Lexus LS 460 L is not known as a fuel efficient vehicle, but efficiency improvements are always possible. Gentle starts will minimize fuel consumption, avoid burying the throttle unless you truly need to. The car’s relaxed character is best suited to smooth, progressive acceleration anyway, so take it easy getting up to speed.

Maintain proper tire inflation. Check your tires regularly and ensure they are inflated to the recommended pressure listed on the doorjamb. Underinflated tires increase rolling resistance, which directly translates to lower fuel economy. This is especially important on a large, heavy car like the LS.

Anticipate traffic flow and maintain a steady speed. Avoid unnecessary braking and acceleration by looking ahead and planning your moves. Using cruise control on the highway can help maintain a constant speed and optimize fuel efficiency.

Minimize idling. If you’re stopped for more than a minute or two, turn off the engine. Modern engines are designed to restart quickly, and idling consumes fuel without moving the car. This is particularly helpful in city driving.

Consider the weight you’re carrying. Removing unnecessary items from the trunk and cabin can reduce the overall weight of the vehicle, which can improve fuel economy. While it won’t be a dramatic difference, every little bit helps.

Explore all Lexus fuel economy data.