22 MPG combined isn’t going to impress everyone, but for the 2023 Lexus LS 500, it’s an acceptable trade-off. The LS prioritizes quiet comfort, effortless cruising, and exclusivity. Buyers are prioritizing a whisper-quiet cabin, comfortable seats, and advanced technology over squeezing every mile from a gallon of premium fuel. They are willing to pay extra at the pump for the unique driving experience the LS delivers.

City and highway performance

The Lexus LS 500’s EPA ratings are 18 MPG in the city and 29 MPG on the highway. The city estimate reflects stop-and-go traffic, where the LS’s weight and powerful engine affect fuel economy. The upside is smooth and responsive acceleration. On the open road, the 10-speed automatic transmission relaxes the LS 500 into a cruise, allowing the twin-turbo V6 to operate efficiently. The highway number matters for the LS, as owners use it for long-distance travel, appreciating its ability to cover miles with ease.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,650 for the 2023 Lexus LS 500. This is based on driving 15,000 miles per year and using national average fuel prices for premium gasoline, which the LS 500 requires. The actual cost will vary depending on driving habits, local fuel prices, and the percentage of city versus highway driving. However, $2,650 provides a baseline for prospective buyers.

Real-world expectations

While the EPA figures are a benchmark, real-world fuel economy can differ. LS 500 owners who frequently drive in urban areas may see figures at or slightly below the 18 MPG city rating. Those who spend time on the highway at consistent speeds may find themselves closer to, or slightly exceeding, the 29 MPG highway figure. Aggressive driving, acceleration, and carrying extra weight will negatively impact fuel consumption. A driver’s habits have a big impact on fuel efficiency.

How it compares

Compared to its competitors, the LS 500’s fuel economy is in line with expectations for a large luxury sedan. The BMW 740i, with its 3.0L turbocharged inline-six, achieves a combined 25 MPG. The Mercedes-Benz S500, with its 3.0L turbocharged inline-six, is rated at 24 MPG combined. The Audi A8, featuring a similar engine configuration, is rated at 22 MPG combined. The LS 500h hybrid model sacrifices some horsepower for a significantly improved 25 MPG combined. This illustrates performance versus fuel efficiency. View all Lexus fuel economy data to see the range of options.

Tips to maximize efficiency

Use the LS 500’s “Eco” drive mode in normal driving conditions. This mode recalibrates the throttle response and transmission mapping to prioritize fuel efficiency over acceleration. While “Eco” might slightly reduce the car’s responsiveness, it’s barely noticeable and can improve fuel economy.

Anticipate traffic flow and avoid unnecessary acceleration and braking. The LS 500 is a heavy vehicle, and each time you accelerate, you’re burning fuel. By maintaining a steady speed and anticipating slowdowns, you minimize energy expenditure. This also makes for a more relaxed driving experience which is what the LS 500 delivers.

Make sure the tires are properly inflated. Underinflated tires increase rolling resistance, which forces the engine to work harder and consume more fuel. Check the tire pressure regularly and inflate them to the recommended level, which can be found on a sticker inside the driver’s side doorjamb. Correct tire pressure also helps handling and extends tire life.

Avoid idling for extended periods. Modern engines are designed to be efficient, but idling consumes fuel. If you’re stopped for more than a minute or two, it’s generally more fuel-efficient to turn off the engine. The LS 500’s smooth and quiet engine start-up makes this less of an annoyance.

Keep up with regular maintenance. A well-maintained engine runs more efficiently. Make sure the air filter is clean, the spark plugs are in good condition, and the engine oil is changed according to the manufacturer’s recommendations. These simple steps can help to optimize fuel economy and keep your LS 500 running smoothly. You can also research LS MPG across all years to understand historical trends for this model.