18 MPG combined is what drivers of the 2017 Lexus LS 460 AWD 4.6L 8-cyl get. While that figure might raise eyebrows in a world increasingly focused on efficiency, it’s a number many LS buyers accept as the cost of owning one. The LS isn’t about squeezing every last mile from a gallon; it’s about effortless power, quiet comfort, and unwavering reliability. Its target demographic prioritizes these qualities, viewing fuel economy as a secondary consideration far below outright luxury.

City and highway performance

The EPA breaks down the LS 460 AWD’s fuel consumption further, estimating 16 MPG in city driving and 23 MPG on the highway. The city figure, unsurprisingly, reflects the toll of stop-and-go traffic on a naturally aspirated V8 powering a large sedan with all-wheel drive. The highway number is more palatable, hinting at the potential for reasonable efficiency during long road trips, where the LS’s smooth ride and comfortable cabin truly shine. The eight-speed automatic transmission likely helps maximize highway efficiency by keeping the engine at lower RPMs during cruising.

Annual fuel cost

The EPA estimates an annual fuel cost of $3,200 for the 2017 Lexus LS 460 AWD. This calculation assumes 15,000 miles of driving per year, using the national average fuel price at the time of calculation. Drivers who exceed this mileage or live in areas with higher fuel costs can expect to pay significantly more. Prospective buyers should seriously consider this figure, acknowledging that the privilege of driving a flagship Lexus comes with a tangible expense at the pump.

Real-world expectations

While the EPA provides a standardized benchmark, real-world fuel economy often varies based on driving habits, road conditions, and maintenance. Aggressive acceleration, frequent hard braking, and neglecting maintenance can all negatively impact fuel efficiency. Owners who drive gently and follow the recommended maintenance schedule are more likely to see numbers closer to the EPA estimates. Remember that the LS is a heavy vehicle that requires a deliberate driving style to get respectable fuel economy.

How it compares

The LS 460’s fuel economy lags behind some of its competitors. For instance, the Audi A8, with its supercharged V6 could achieve slightly better combined MPG, hovering around 21 MPG. However, the A8 gives up the V8’s sound and effortless power. The BMW 7 Series, especially in its 740i guise, also often surpasses the LS in fuel efficiency, approaching similar economy figures to the Audi. Even Lexus’s own hybrid variant of the LS, the LS 600h, offered improved city fuel economy, albeit at a higher purchase price. Of course, you can compare LS MPG across all years to see how later models performed.

Tips to maximize efficiency

Avoid aggressive acceleration. The 4.6L V8 delivers ample power, making it tempting to push the throttle. However, easing into acceleration will significantly conserve fuel. Remember this is a luxury sedan, not a sports car. Smooth and predictable driving does reward you in fuel economy.

Ensure proper tire inflation. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Regularly check and maintain the recommended tire pressure, found on the driver’s side doorjamb.

Minimize idling. Letting the engine idle for extended periods wastes fuel. If you anticipate a stop longer than a minute, turn off the engine. Modern cars are equipped with reliable starters designed to handle frequent starts and stops, even in the LS.

Keep up with scheduled maintenance. Regular oil changes, air filter replacements, and spark plug maintenance ensure optimal engine performance and fuel efficiency. Neglecting these items can lead to decreased fuel economy and potential damage to the engine. See the owner’s manual for the recommended service intervals.

Consider eco-driving mode, if it’s available. Some model years offered selectable driving modes that prioritized fuel efficiency. These modes typically limit throttle response and shift points to conserve fuel. While it might slightly reduce performance, it can make a positive impact on your overall MPG.