The 2019 Lexus LS 500 AWD gets 21 MPG combined. That’s not going to win any fuel efficiency awards, but it’s an acceptable compromise for some buyers. These buyers look for a quiet driving experience inside a well-crafted interior. Fuel economy, while a consideration, is less important than the LS’s easy power and composure, especially with all-wheel drive.

City and highway performance

The EPA estimates the 2019 Lexus LS 500 AWD at 18 MPG in the city and 27 MPG on the highway. The city number shows what happens in stop-and-go traffic. The turbocharged 3.4L V6 works harder and the car’s weight causes lower efficiency. The 27 MPG highway rating is good, meaning the LS 500 AWD can cruise comfortably and efficiently on long trips. Drivers who spend a lot of time in cities will see fuel economy close to 18 MPG, while those with longer commutes or highway trips will likely get closer to the combined 21 MPG. Remember that LS MPG across all years varies depending on engine and driveline.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2019 Lexus LS 500 AWD at $2,750. This is based on driving 15,000 miles per year and national average fuel prices. The estimate allows buyers to compare the LS 500 AWD against other vehicles and understand the costs of ownership. Actual fuel cost will vary depending on driving, local fuel prices, and the amount of city versus highway driving. View all Lexus fuel economy data when researching.

Real-world expectations

EPA estimates are a good starting point, but real-world fuel economy changes. Driving style, tire pressure, and weather all impact how much gas you use. Quick acceleration, braking, and idling will hurt fuel efficiency. On the other hand, smooth driving at moderate speeds will help MPG. Owners who want good fuel economy can probably match or beat the EPA estimates, while those who enjoy the LS 500’s power may see lower numbers. It’s important to understand how driving habits change fuel consumption and adjust them.

How it compares

The 2019 Lexus LS 500 AWD’s fuel economy is similar to its competitors, but not the best. The BMW 740i xDrive, with its turbocharged inline-six, gets a slightly better 24 MPG combined. The Mercedes-Benz S450 4MATIC, also with a turbocharged inline-six, is rated at 22 MPG combined. The Audi A8, with its mild-hybrid V6, gets 21 MPG combined, matching the LS 500 AWD. These differences are small, and the LS buyer probably values Lexus’s reliability and smooth ride more than a small MPG increase. For those worried about fuel costs, these differences might matter. The hybrid LS 500h offers much better fuel economy at 25 MPG combined, but offers a different driving experience.

Tips to maximize efficiency

Accelerate slowly. The turbocharged engine in the LS 500 AWD has plenty of power, but fast acceleration burns more fuel. Slow acceleration helps the engine work better and saves fuel. Anticipate traffic and keep a steady speed when you can.

Keep the right tire pressure. Properly inflated tires reduce rolling resistance and improve fuel economy. Check your tire pressure and inflate to the recommended pressure on the driver’s side doorjamb. Regular checks will improve handling and even tire wear.

Avoid idling. Idling uses fuel without going anywhere. If you’re stopped for more than a minute, turn off the engine. Modern cars start quickly, so restarting is more fuel-efficient than idling. This can make a difference, especially in cities.

Use cruise control on the highway. Cruise control keeps a constant speed, which can improve fuel economy. On flat highway stretches, use cruise control to avoid speed changes and save fuel. Small speed adjustments make a big difference over long drives.

Carry less weight. Weight in your car reduces fuel economy. Remove unnecessary items from the trunk and passenger area. The less weight the engine moves, the less fuel it uses.