16 MPG combined isn’t going to win any fuel economy awards, but for the 2017 Lexus GX 460, it’s practically part of the charm. This isn’t a vehicle bought for thriftiness. Instead, the GX 460 attracts buyers who prioritize old-school truck-based ruggedness, luxurious appointments, and the legendary Lexus reliability above all else. The fuel consumption is a trade-off they’re prepared to make for the capability and solid feel this SUV provides.

City and highway performance

The EPA estimates for the 2017 GX 460 indicate 15 MPG in the city and 18 MPG on the highway. These figures are a direct result of the GX’s reliable 4.6L V8 engine and traditional six-speed automatic transmission, a combination geared more toward dependable performance than outright efficiency. The full-time four-wheel-drive system that enhances its off-road capability also adds weight and mechanical drag, further contributing to the GX 460’s thirst for gasoline.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2017 Lexus GX 460 is $3,600. This calculation is based on driving 15,000 miles per year, with a specific percentage of those miles driven in the city versus on the highway, and using the national average fuel price at the time the estimate was created. Drivers should be aware that real-world fuel costs can vary depending on individual driving habits, local fuel prices, and the specific conditions in which the vehicle is operated.

Real-world expectations

While the EPA estimates provide a baseline, it’s important to consider real-world driving conditions. GX 460 owners often report figures close to the EPA estimates, but those who frequently engage in city driving, tow trailers, or tackle off-road trails will likely see their fuel economy dip below 15 MPG. Conversely, drivers who primarily use the GX 460 for long highway journeys might achieve slightly better than the rated 18 MPG. See GX MPG across all years to understand how this model year performs.

How it compares

Compared to other vehicles in its class, the GX 460’s fuel economy is definitely on the lower end of the spectrum. A more modern, car-based SUV like the Acura MDX with all-wheel drive achieves around 21 MPG combined, while the V6 Toyota 4Runner TRD Pro, a close relative, gets around 17 MPG combined. Even the Land Rover Discovery, with its turbocharged engine options, can achieve slightly better figures depending on the configuration. The older generation Mercedes-Benz G550 is in the same ballpark, but with even higher running costs. However, those considering the GX 460 often aren’t cross-shopping for outright efficiency, as they value its traditional body-on-frame construction and off-road prowess over saving on gas.

Tips to maximize efficiency

Gentle acceleration and consistent speeds are key to squeezing every last mile out of a gallon of gasoline in the GX 460. Avoid aggressive starts and stops, and maintain a steady pace on the highway, using cruise control whenever possible. Remember, that V8 loves to drink when pushed hard.

Proper tire inflation can make a noticeable difference in fuel economy. Check your tire pressures regularly and ensure they are inflated to the manufacturer’s recommended levels, typically found on a sticker inside the driver’s side doorjamb. Underinflated tires increase rolling resistance, which reduces fuel efficiency.

Reduce unnecessary weight inside the vehicle. Hauling around extra cargo adds to the GX 460’s already substantial weight, requiring the engine to work harder and consume more fuel. Remove any items you don’t need for your daily trips.

Consider the type of fuel you’re using. While the GX 460 doesn’t necessarily require premium fuel, using a higher-octane gasoline might provide a slight improvement in performance and fuel economy in some cases. Experimenting with different fuel grades can help you determine what works best for your driving style and conditions.

Regular maintenance, including oil changes and air filter replacements, is critical for maintaining optimal fuel efficiency. A well-maintained engine runs more efficiently, reducing fuel consumption. See all Lexus fuel economy data for a broader look at the brand.