What is the gas mileage on a Lexus GX 460?

The Lexus GX 460’s fuel economy sits in the mid-teens, with typical EPA estimates around 15–16 mpg in the city and about 19 mpg on the highway, yielding roughly 17 mpg combined for most 4WD models.

Fuel economy for the GX 460 varies by model year and drivetrain, and real-world results can differ based on driving conditions, load, and maintenance. Early models generally posted slightly higher city mileage, while later years have tended to hover around the same combined range. Most GX 460s sold in the United States are equipped with four-wheel drive (4WD), which slightly reduces city mpg versus rear-wheel-drive variants, though highway efficiency remains similar.

EPA fuel economy estimates by model year

Here are the typical EPA estimates observed for the GX 460 in U.S. market models. Note that exact numbers can vary by year, trim, and testing cycle.

• 2010–2013 GX 460 (4WD): approximately 16 mpg city, 20 mpg highway, 18 mpg combined


• 2014–2023 GX 460 (4WD): approximately 15 mpg city, 19 mpg highway, 17 mpg combined


• 2024–present GX 460 (4WD, if applicable): estimated around 15 mpg city, 19 mpg highway, 17 mpg combined

In practice, the GX 460’s mileage tends to stay in the mid-teens overall, with highway driving offering the best efficiency and urban stop-and-go pushing averages down. Some markets or configurations with different drivetrain setups may show small variations.

Real-world mileage and factors that influence it

Actual fuel economy for the GX 460 can diverge from EPA estimates based on how, where, and what you drive. The following factors commonly influence mpg figures.

• Driving conditions: city versus highway significantly changes efficiency.


• Terrain and payload: hills, towing, and heavy loads reduce mileage.


• Vehicle maintenance: air filter condition, spark plugs, and oil changes matter for efficiency.


• Tire type and inflation: underinflated tires and low rolling resistance tires can alter MPG.


• All-wheel-drive usage: constant AWD driving generally lowers city mpg slightly compared with rear-drive variants.


• Weather and accessory use: cold weather and roof racks or cargo boxes increase aerodynamic drag and fuel use.

For drivers seeking better efficiency, minimizing weight, maintaining proper tire pressure, and adopting smoother driving habits can help narrow the gap between real-world results and the EPA estimates.

Tips to maximize fuel economy on the GX 460

Implementing a few practical steps can help you squeeze more miles out of each gallon. The following list offers actionable guidance.

1. Keep tires inflated to the vehicle manufacturer’s recommended pressure; check them regularly.


2. Schedule regular maintenance (oil changes, air filter replacement, and spark plug checks) to keep the engine running efficiently.


3. Lighten the load when possible and remove roof racks or cargo boxes when not in use.


4. Drive smoothly: anticipate traffic, avoid rapid acceleration, and use cruise control on highways when appropriate.


5. Plan efficient routes to minimize frequent stop-and-go driving and unnecessary idling.

While the GX 460 trades some fuel efficiency for capability and luxury, attentive maintenance and mindful driving can help you achieve the best possible mpg within the model’s inherent limitations.

Summary

The Lexus GX 460 typically delivers fuel economy in the mid-teens, with EPA estimates often around 15 mpg city and 19 mpg highway, equating to roughly 17 mpg combined for 4WD versions. Year-by-year differences exist, and real-world mileage depends on driving conditions and maintenance. By adopting steady driving habits, keeping up with maintenance, and reducing aero drag when possible, drivers can maximize efficiency without sacrificing the vehicle’s strength and luxury.

Do Lexus GX 460 require premium gas?

Yes, later model Lexus GX 460s (201720172017 and newer) require premium fuel, while earlier models (201620162016 and older) can use regular unleaded, though premium is recommended for best performance. The engine in the GX 460 is designed to run most efficiently on 91-octane premium fuel. 
GX 460 fuel requirements by model year

• 201720172017 and newer: Require a minimum of 91-octane premium fuel. 
• 201620162016 and older: Require a minimum of 87-octane regular unleaded gas. However, premium fuel is still recommended for optimal performance and fuel efficiency. 

What happens if you use regular gas in a newer model?

• Using regular gas in a newer model may cause a slight decrease in performance and fuel efficiency. 
• Prolonged use of lower-octane fuel could potentially lead to engine knocking, and over time may cause carbon buildup. 

How many miles can a Lexus GX 460 go on a full tank?

If I'm commuting to work I might only get 250 miles (or less if I fill my tank earlier) but on a highway roadtrip I can hit 350. 2021 - usually around 280.

What years to avoid GX 460?

The main Lexus GX 460 years to avoid are 2010–2013 due to potential issues like engine oil leaks (valley plate leak), as well as the 2010 model specifically, which had a temporary sales suspension after a rollover risk was identified during sharp turns. Later models, especially 2016 and 2017, may be more prone to oil leaks as well, though not as critically as the earlier years. 
Years to be cautious about

• 2010–2013: These early models are more frequently cited for potential problems, such as the valley plate coolant leak, which can be expensive to repair. 
• 2016 and 2017: These years have been noted by some owners as having a higher likelihood of oil leaks. 

Model years generally considered more reliable 

• 2014 and later: These models reportedly have a different, less leak-prone head gasket. 
• 2021 and 2022: These years are specifically highlighted as being very reliable. 

Other potential issues to consider with any model year

• Secondary Air Injection System: Problems with this system can be costly to repair. 
• Suspension: Models with the optional AHC (Adjustable Height Control) or KDSS (Kinetic Dynamic Suspension System) can experience issues, though Lexus has issued a TSB (Technical Service Bulletin) to address a leaning issue in some earlier KDSS vehicles. 
• Rust: In areas where roads are salted, rust can be a concern, especially on models driven in the North. 
• Maintenance: Regular and consistent fluid changes, especially transmission fluid, are crucial to the longevity of the vehicle. 

Is the Lexus GX 460 fuel efficient?

A GX 460 model provides a 15/19/16 MPG city/hwy/combined4.