19 MPG combined is the result of the strong V8 power and quiet isolation in the 2017 Lexus LS 460. This isn’t a car for hyper-milers or those who want to spend less on gas. It’s a meticulously engineered fortress of comfort designed for those who prioritize a smooth, quiet ride and a reputation for unparalleled reliability above all else. Buyers in this segment understand the trade-offs: ample power and a luxurious experience necessitate a larger engine, which translates directly to fuel consumption.

City and highway performance

The LS 460’s fuel economy is 16 MPG in the city and 24 MPG on the highway. These figures reflect how it is intended to be used. Stop-and-go city driving taxes the 4.6L V8, with frequent acceleration weighing heavily on fuel consumption.

Out on the open road, the LS 460 is in its element. The smooth-shifting eight-speed automatic transmission settles into high gear, the engine runs at low RPMs, and the aerodynamic shape allows for relatively efficient cruising. While 24 MPG isn’t groundbreaking, it’s adequate for long road trips where comfort and refinement are important. The LS 460 is designed to eat up miles effortlessly, and it does so with a quiet competence that few rivals can match. For those interested in a smaller engine, compare all Lexus fuel economy data.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 Lexus LS 460 at $3,050. This figure is based on driving 15,000 miles per year, with a specified percentage of city versus highway driving, and assumes national average fuel prices. Individual results will vary depending on driving habits, location, and fuel costs in your area, but this provides a standardized benchmark for comparison. It’s a substantial sum, certainly, but prospective LS 460 owners likely factor that into their ownership calculations. They are prioritizing a certain level of luxury and performance, and they understand the associated costs.

Real-world expectations

While the EPA provides a valuable benchmark, real-world fuel economy often deviates. Aggressive driving, frequent short trips, and extended idling will all decrease MPG. Conversely, gentle acceleration, consistent highway speeds, and proper vehicle maintenance can improve fuel efficiency. Expect to see figures close to the EPA estimates under normal driving conditions. However, pushing the engine frequently to experience its strong acceleration will certainly impact your wallet. Some owners report exceeding the EPA highway estimate during long trips with minimal stop-and-go traffic. If you are curious, check out LS MPG across all years to compare data.

How it compares

The LS 460’s fuel economy sits squarely in the middle of its competitive set. The BMW 740i from the same year, with its turbocharged inline-six, boasts a slightly better 24 MPG combined. However, some LS 460 buyers prefer the naturally aspirated V8 for its smooth power delivery and perceived long-term reliability. The Mercedes-Benz S550, with its twin-turbo V8, delivers similar performance to the LS 460, but achieves a comparable 19 MPG combined. Audi’s A8, specifically the 3.0T model, manages a slightly better 22 MPG combined. These differences are incremental, and often overshadowed by other factors like brand loyalty, feature preferences, and overall vehicle feel. Ultimately, the LS 460 buyer is making a considered decision, and minor fuel economy differences are unlikely to be the deciding factor. The Cadillac CT6, with its available V6 engine, offered slightly better fuel economy, but lacked the same levels of refinement and prestige.

Tips to maximize efficiency

Gentle acceleration makes a significant difference. The LS 460’s V8 has ample torque, so there’s no need to floor it from every stop. Smoothly building speed will conserve fuel and also enhance the overall quiet driving experience this vehicle is known for. Avoid unnecessary hard braking as well; anticipating traffic flow and coasting when possible will minimize fuel consumption.

Maintain consistent tire pressure. Underinflated tires increase rolling resistance, which forces the engine to work harder and consume more fuel. Check your tire pressure regularly – at least once a month – and inflate them to the recommended pressure listed on the door jamb sticker. This simple task improves both fuel economy and tire life.

Minimize idling. Letting the engine idle for extended periods wastes fuel. If you’re stopped for more than a minute or two, turn off the engine. The LS 460’s climate control system is effective, but excessive use of the air conditioning, even with the automatic climate control feature, increases fuel consumption.

Keep up with routine maintenance. Regular oil changes, air filter replacements, and spark plug replacements ensure that the engine is running efficiently. A well-maintained engine consumes less fuel and also reduces emissions, keeping your luxury sedan smooth and responsive for years to come.

Consider using cruise control on the highway. Maintaining a consistent speed minimizes unnecessary acceleration and deceleration, leading to improved fuel economy. The LS 460’s adaptive cruise control system can be particularly helpful in maintaining a consistent speed, while responding to changes in traffic automatically.