The 2015 Lexus LS 460 AWD with the 4.6L V8 gets 18 MPG combined. This isn’t a fuel-sipping hybrid. It’s a flagship luxury sedan engineered for effortless power and a comfortable ride, and its fuel consumption reflects that priority. Many LS buyers willingly accept this trade-off for the car’s refinement, build quality, and long-term reliability.

City and highway performance

The LS 460 AWD’s EPA ratings break down to 16 MPG in the city and 23 MPG on the highway. The city figure reflects the engine’s need to haul the heavy sedan from stoplight to stoplight, a situation made worse by the all-wheel-drive system’s added weight and mechanical drag. Highway performance, while better, is still modest. The eight-speed automatic transmission helps keep the engine in its most efficient range at cruising speeds, but the V8’s displacement ultimately limits any possibility of outstanding fuel mileage.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2015 Lexus LS 460 AWD is $3,200. This assumes 15,000 miles of driving per year, with a mix of city and highway miles, using national average fuel prices. Keep in mind that real-world costs can vary significantly based on driving habits, local fuel prices, and the type of fuel used. Lexus recommends premium fuel for optimal performance, which increases the cost.

Real-world expectations

While the EPA estimates provide a baseline, observed fuel economy often differs. A driver who accelerates quickly or who frequently engages the all-wheel-drive system in demanding conditions is likely to see figures lower than the official ratings. However, a driver who accelerates gently and maximizes highway driving might achieve numbers closer to the 23 MPG highway estimate. Remember that factors like tire pressure and the condition of spark plugs and air filters can also affect fuel consumption. Owners can explore LS MPG across all years to see user-submitted data.

How it compares

The 2015 Lexus LS 460 AWD’s fuel economy is in the middle of its luxury sedan rivals. The BMW 750i xDrive, with its turbocharged V8, achieves a similar 19 MPG combined. The Audi A8 3.0T, equipped with a supercharged V6 and quattro all-wheel drive, offers a slightly better 22 MPG combined. The Mercedes-Benz S550 4MATIC, with its twin-turbo V8, mirrors the Lexus’s 18 MPG combined. Buyers often cross-shop these models, considering fuel economy as one element in their decision. The target audience is generally less concerned with saving every last bit of gas and more interested in a luxury driving experience. For a broader perspective, consult all Lexus fuel economy data.

Tips to maximize efficiency

Mindful driving habits are the most impactful steps you can take to improve the MPG of the LS 460 AWD. Avoid aggressive acceleration and hard braking, allowing the car to gently build speed and coast whenever possible. The LS’s smooth powertrain responds well to a light foot, maximizing fuel efficiency without sacrificing too much performance.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure regularly and maintain the recommended levels outlined in the owner’s manual or on the sticker inside the driver’s side doorjamb.

Minimize unnecessary weight in the vehicle. Extra cargo adds to the overall load, requiring more energy to accelerate and maintain speed. Remove any items you don’t need on a regular basis, such as golf clubs, heavy tools, or rarely used equipment. Small changes can add up over time.

Use cruise control on the highway. Maintaining a consistent speed helps optimize fuel efficiency on long stretches of road. The LS 460’s adaptive cruise control system can further enhance this by automatically adjusting speed to maintain a safe following distance from other vehicles, preventing unnecessary acceleration and braking.

Ensure the car is properly maintained. Regular maintenance, including oil changes, air filter replacements, and spark plug checks, keeps the engine running efficiently. Follow the recommended maintenance schedule in the owner’s manual to prevent problems that can negatively impact fuel economy.