16 MPG combined from the 2022 Lexus GX 460 is not a misprint. It’s simply what owners accept when they want reliable, strong capability, old-school V8 power, and the solid build for which Lexus is known. GX buyers aren’t cross-shopping Prius trims. They’re after a body-on-frame SUV that can handle challenging terrain, tow a respectable load, and serve as a comfortable daily driver, even if it means frequent trips to the gas station.

City and highway performance

The GX 460’s EPA ratings break down to 15 MPG in the city and 19 MPG on the highway. That city figure reflects the engine’s thirst for fuel during stop-and-go driving, made worse by the vehicle’s substantial weight. The highway number improves slightly, but the GX’s boxy shape and lack of aerodynamic design hinder its ability to achieve significantly better fuel economy at higher speeds. The six-speed automatic transmission also contributes; more gears could help the engine operate more efficiently at cruising speeds.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2022 Lexus GX 460 is $3,600. This is based on driving 15,000 miles per year and using national average fuel prices. Of course, actual fuel costs will vary depending on individual driving habits, local fuel prices, and the specific blend of city versus highway miles driven. However, $3,600 is a reminder that owning a GX comes with a significant fuel bill, one that’s considerably higher than many other SUVs, even those with similar levels of luxury and capability.

Real-world expectations

While the EPA estimates provide a baseline, real-world fuel economy often differs. GX owners often report achieving figures close to the EPA estimates, but factors such as aggressive driving, carrying heavy loads, or frequent off-road excursions can easily push the MPG lower. Careful drivers who primarily use the GX for highway cruising might see slightly better numbers. However, exceeding the EPA highway estimate by a significant margin is unlikely given the vehicle’s inherent design.

How it compares

The GX’s fuel economy stands out, when compared to its competitors. The Acura MDX, for example, achieves 22 MPG combined in its front-wheel-drive configuration and 19 MPG combined with all-wheel drive. Even the V6-powered Toyota 4Runner, a close relative of the GX, manages a slightly better 17 MPG combined. The Land Rover Defender, prioritizing off-road ability like the GX, achieves 19 MPG combined with its base engine. For shoppers considering the GX, understanding how its fuel consumption stacks up against alternatives is critical, especially if fuel costs are a major concern. Explore GX MPG across all years to see if older models offer improvements, though the core powertrain has remained consistent.

Tips to maximize efficiency

The GX 460’s engine is tuned for smooth, responsive power rather than fuel efficiency. Avoid aggressive acceleration and maintain a steady speed whenever possible. The V8 rewards a gentle right foot, so try to anticipate traffic conditions and minimize abrupt stops and starts.

Ensure that your tires are properly inflated. Underinflated tires increase rolling resistance, which forces the engine to work harder and consume more fuel. Check your tire pressure regularly and inflate them to the manufacturer’s recommended specifications, which can be found on the driver’s side doorjamb.

Reduce unnecessary weight. Carrying extra cargo increases the load on the engine and reduces fuel economy. Remove any items from the vehicle that are not essential, especially heavy objects. This includes items in the cargo area as well as anything carried on a roof rack.

Consider planning your routes to avoid stop-and-go traffic. Congested roads significantly reduce fuel economy, especially in a vehicle like the GX. If possible, use navigation apps to identify alternative routes that minimize traffic congestion, even if they are slightly longer overall.

Regular maintenance is crucial. Ensure that your GX 460 receives regular tune-ups, including oil changes, air filter replacements, and spark plug maintenance. A well-maintained engine operates more efficiently, which can contribute to improved fuel economy. For more information about the broader Lexus lineup, see all Lexus fuel economy data.