22 MPG combined might raise eyebrows in a Corolla, but in the 2024 Lexus LS 500, it’s a compromise that owners knowingly accept. This isn’t a car bought for maximizing every last drop of fuel. It’s a statement of success, a sanctuary of quiet luxury, and a smooth operator on long highway stretches. The LS 500 buyer prioritizes refinement, a whisper-quiet cabin, and effortless power; they’re willing to trade a few MPGs for the experience.

City and highway performance

The 3.4L twin-turbo V6 under the LS 500’s hood delivers a reliable 416 horsepower. This ample power translates on the road to an EPA-estimated 18 MPG in the city. Stop-and-go traffic is the enemy here, as the turbos spool up and the engine works harder to move the LS 500’s substantial weight. This figure shows that most LS owners aren’t buying this vehicle as an in-town commuter. The LS 500 truly shines on the open road, delivering a respectable 29 MPG on the highway.

The 10-speed automatic transmission contributes to this efficiency, allowing the engine to cruise at lower RPMs, minimizing fuel consumption during those long journeys that the LS 500 is built to devour.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2024 Lexus LS 500 at $2,650. This figure is based on driving 15,000 miles per year, with 45% of those miles driven in the city and 55% on the highway. The calculation also uses the national average fuel price, which can fluctuate throughout the year. This cost serves as a benchmark, allowing potential buyers to consider the financial implications of owning this luxury sedan alongside its purchase price, insurance, and maintenance.

Note that the actual fuel cost will vary depending on individual driving habits and fuel prices in your region.

Real-world expectations

While the EPA estimates provide a useful baseline, it’s important to understand that real-world fuel economy can vary. Aggressive driving, frequent hard acceleration, and heavy traffic congestion will certainly decrease fuel efficiency. On the other hand, gentle acceleration, consistent speeds on the highway, and proactive maintenance can help you approach or even exceed the EPA estimates. Owners who prioritize fuel efficiency can use the LS 500’s selectable drive modes, choosing “Eco” mode to optimize engine and transmission settings for maximum mileage. While not a fuel miser, the LS500 doesn’t need to fall far short of official figures when driven sensibly.

How it compares

The Lexus LS 500 exists in a segment where comfort and performance often outweigh fuel economy concerns, but comparisons are inevitable. The BMW 740i, with its inline-six engine, achieves a slightly better combined MPG of 25. The Mercedes-Benz S500, another key competitor, mirrors the LS 500’s combined rating at 22 MPG. The Audi A8, equipped with its 3.0-liter V6, makes 23 mpg combined. These differences, while seemingly small, can accumulate over time and influence a buyer’s decision, especially when considering the all Lexus fuel economy data. However, the LS 500 buyer is often willing to sacrifice a marginal improvement in fuel economy for the Lexus’s reputation for reliability, its quiet interior, and its distinctive styling. See the LS MPG across all years.

Tips to maximize efficiency

Take advantage of the LS 500’s drive modes. Selecting “Eco” mode softens throttle response and optimizes the transmission’s shift points to prioritize fuel conservation. While the car won’t feel as sporty, you’ll see a noticeable improvement in mileage, especially during city driving.

Monitor your tire pressure regularly. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Keeping your tires properly inflated to the recommended pressure will not only improve fuel efficiency but also extend the life of your tires and enhance handling.

Avoid aggressive driving habits. Rapid acceleration, hard braking, and high speeds all contribute to increased fuel consumption. Adopt a smoother, more gradual driving style to maximize fuel economy. Anticipate traffic flow, maintain a safe following distance, and avoid unnecessary lane changes.

Minimize excess weight. Carrying unnecessary items in your trunk adds weight to the vehicle, reducing fuel efficiency. Remove any items that you don’t need on a regular basis to lighten the load and improve gas mileage. A trunk full of golf clubs all week will have a negative impact, even if you only golf on weekends.

Consider using cruise control on the highway. Maintaining a consistent speed helps to optimize fuel efficiency. However, be mindful of traffic conditions and adjust your speed as needed to maintain a safe following distance and avoid sudden braking.