21 MPG combined might raise eyebrows in a smaller car, but for the 2020 Lexus LS 500 AWD, it’s a compromise many owners accept. This car isn’t bought for fuel efficiency; it’s acquired for its quiet ride, opulent interior, and the Lexus prestige. The all-wheel-drive system adds confidence in bad weather, but decreases fuel economy. Buyers considering the LS 500 AWD prioritize a specific luxury experience and understand the trade-offs regarding fuel consumption.

City and highway performance

The EPA estimates for the 2020 Lexus LS 500 AWD are 18 MPG in the city and 27 MPG on the highway. The city figure reflects stop-and-go traffic, where the 3.4L twin-turbocharged V6 engine requires more power to move this large sedan. The highway figure showcases the engine’s ability to cruise efficiently at consistent speeds, thanks to the smooth 10-speed automatic transmission. These numbers suggest the LS 500 AWD is best for drivers who spend significant time on the open road, where its refinement and long-distance comfort truly shine.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2020 Lexus LS 500 AWD is $2,750. This is based on driving 15,000 miles per year, with mixed city and highway driving, using national average fuel prices at the time of calculation. This is just an estimate. Your actual fuel costs will vary depending on your driving habits, fuel type, and location. Areas with higher gas prices will result in higher costs. Even aggressive driving habits can greatly impact the actual cost. While the LS 500 AWD is a luxury vehicle, buyers need to understand this specific expense.

Real-world expectations

The EPA provides a standardized benchmark, but real-world fuel economy often differs based on driving styles and conditions. Drivers who frequently accelerate quickly or drive in congested cities will likely see lower MPG than the EPA estimates. However, those who prioritize smooth, steady highway driving might achieve results closer to, or even exceeding, the 27 MPG highway rating. Seasonal variations also matter. Cold weather can negatively impact fuel economy, especially on shorter trips, as the engine needs more time to warm up. Tires also play a big role. The all-wheel-drive system adds weight and complexity, impacting efficiency. For those wanting to review LS MPG across all years, we have compiled the data.

How it compares

Compared to its competitors, the 2020 Lexus LS 500 AWD’s fuel economy is typical for the class. The BMW 740i xDrive, for example, is rated at 25 MPG combined, with its rear-wheel drive version achieving slightly better figures. The Mercedes-Benz S560 4Matic gets around 22 MPG combined. The Audi A8, depending on the engine, can range from 22 to 23 MPG combined. This class of vehicles offers the latest technology and luxury but doesn’t prioritize fuel efficiency above all else. For consumers considering all Lexus models, all Lexus fuel economy data can be reviewed to make informed decisions.

Tips to maximize efficiency

Maintain a consistent speed and avoid aggressive acceleration. The LS 500 AWD’s twin-turbo V6 delivers strong power, but frequent acceleration will significantly decrease fuel efficiency. Anticipate traffic flow and adjust your speed to minimize sudden braking or acceleration.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure regularly and inflate them to the recommended specifications found in your owner’s manual or on the tire placard.

Reduce unnecessary weight. Extra weight in the trunk or cabin puts additional strain on the engine, leading to increased fuel consumption. Remove any items you don’t need, such as golf clubs, extra luggage, or unused equipment.

Use the vehicle’s drive mode selector. The LS 500 AWD likely offers different drive modes that prioritize fuel efficiency, such as “Eco” or “Comfort” mode. These modes typically adjust the engine mapping and transmission shift points to optimize fuel economy. It is best to activate these modes when appropriate.