Does 2022 Lexus GX 460 require premium gas?

The 2022 Lexus GX 460 is a luxury SUV with a 4.6-liter V8 engine, and its fuel requirements are a common point of confusion for potential buyers. This article clarifies whether premium gas is mandatory and how octane choices affect performance and economy.

No—the 2022 GX 460 does not require premium fuel. Regular unleaded gasoline (87 octane) is acceptable for normal driving; however, Lexus recommends premium unleaded gasoline (91 octane or higher) for optimal performance and efficiency, especially when towing or operating under heavy load or demanding conditions.

Fuel octane guidance for the GX 460

The following summarizes the official guidance on octane use for the GX 460, based on Lexus/Toyota fuel recommendations.

• Regular unleaded gasoline with an octane rating of 87 or higher is acceptable for everyday driving.


• Premium unleaded gasoline with an octane rating of 91 or higher is recommended for best performance and fuel efficiency.


• Using regular 87 octane under heavy load or high-demand driving may result in slightly reduced throttle response or performance; premium can help maintain peak performance in these conditions.

In practice, many drivers will be satisfied with regular gasoline for daily commuting, but those who tow, drive in hilly or hot conditions, or regularly push the vehicle hard may notice a performance edge with premium fuel.

Notes for GX 460 owners

Always consult the owner's manual or your local Lexus dealer for guidance tailored to your vehicle’s VIN and your typical driving profile. If you frequently operate in demanding conditions, budgeting for premium fuel may be worthwhile.

Summary

The 2022 Lexus GX 460 does not require premium gas, but premium (91 octane or higher) is recommended for maximum performance and efficiency in demanding scenarios such as towing or steep climbs. Regular 87 octane is suitable for everyday driving, with the trade-off of potentially reduced performance under load. Consider your driving needs and climate when choosing fuel.

What year to avoid Lexus 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. 

Do I have to use premium gas in my Lexus GX460?

The recommended fuel is 91 octane “for best performance”. You won't hurt a thing running 87 octane in a 460 for normal daily use. Going to tow?

What kind of gas does the 2022 Lexus GX 460 take?

The 2022 Lexus GX 460 requires premium 91-octane unleaded gasoline. Using a lower octane fuel is not recommended, as it can lead to engine damage and will not provide the optimal performance.
 

• Required Fuel: Premium unleaded gasoline with a minimum octane rating of 91. 
• Reason: The engine is designed for higher compression, and premium fuel prevents knocking and ensures proper performance and longevity. 
• Consequences of using lower octane: Using a lower octane fuel can cause internal engine damage and is not recommended, according to Lexus and Reddit users. 

Which Lexus models do not require premium gas?

Several Lexus models do not require premium gas, including the Lexus ES 350, RX 350 (older models), NX 250 (some model years), and hybrid models like the UX 250h and NX 350h/450h+ (where premium is recommended but not required). To confirm the correct fuel for a specific vehicle, always check the owner's manual or the vehicle's fuel-door label. 
Models that typically use regular unleaded (87 octane) 

• Lexus CT 200h
• Lexus ES 300h and ES 350
• Lexus HS 250h
• Lexus NX 250 (some model years)
• Lexus NX 300h (older models)
• Lexus RX 350 (models from approximately 2012-2022)
• Lexus UX 250h (some model years) 

Models where premium is recommended but not required 

• Some hybrid models, such as the NX 350h and NX 450h+, can use regular gas, but using premium is recommended for optimal performance and to prevent potential engine knocking. 

How to be certain

• Check the owner's manual: This is the most reliable source of information for your specific vehicle. 
• Look at the fuel door: The required fuel type is often listed inside the fuel-filler door.