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What engine is in a 2014 Lexus GX460?

The 2014 Lexus GX460 is a mid-size luxury SUV known for its off-road capabilities and premium interior. At the heart of this vehicle is a powerful engine that provides the necessary performance for both on-road and off-road driving. In this article, we'll take a closer look at the engine that powers the 2014 Lexus GX460.

Engine Specifications

The 2014 Lexus GX460 is equipped with a 4.6-liter V8 engine. This engine produces 301 horsepower and 329 lb-ft of torque. The engine is paired with a six-speed automatic transmission, which helps to deliver smooth and efficient power delivery.

Engine Technology

The 4.6-liter V8 engine in the 2014 Lexus GX460 features several advanced technologies to enhance performance and efficiency. It utilizes dual variable valve timing with intelligence (VVT-i) to optimize valve timing, improving both power and fuel economy. The engine also features direct fuel injection, which helps to improve combustion and reduce emissions.

Off-Road Capabilities

The powerful V8 engine in the 2014 Lexus GX460 is a key component of the vehicle's off-road capabilities. The engine's high torque output, combined with the GX460's full-time four-wheel-drive system, allows the SUV to tackle challenging terrain with ease. This makes the GX460 a popular choice for those who enjoy outdoor adventures and need a capable, yet luxurious, SUV.

Conclusion

The 2014 Lexus GX460 is powered by a robust 4.6-liter V8 engine that delivers impressive performance and off-road capabilities. With its advanced technologies and smooth power delivery, the GX460's engine is a key factor in the vehicle's overall appeal as a premium mid-size luxury SUV.

What engine does the 2014 GX 460 have?

The 2014 Lexus GX 460 is powered by a 4.6-liter V8 that produces 301 horsepower and 329 pound-feet of torque. Power is routed through a six-speed automatic transmission. Fuel economy is an EPA-estimated 15/20 mpg city/highway, which is on par with that of most SUVs in the class.

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 engine reliable?

The Lexus GX 460 engine is extremely reliable, with a reputation for longevity and durability thanks to its naturally aspirated V8 engine and traditional body-on-frame construction. While generally trouble-free, some owners report a cold-start rattle from the driver's side chain tensioner that typically goes away when the engine warms up. Potential maintenance items to be aware of include valley plate leaks and timing chain cover oil leaks, though they are considered minor issues compared to the engine's overall dependability.

This video discusses the reliability of the Lexus GX 460's V8 engine: 1mShooting CarsYouTube · Jun 18, 2025
Positive aspects

Exceptional longevity: The 4.6L V8 engine is considered robust and can last for 250,000-300,000 miles or more with proper maintenance.
Proven technology: The engine is a time-tested design, avoiding the complexity of newer turbocharged or hybrid powertrains, which contributes to its reliability.
Low-end power: The V8 provides strong low-end torque, making it well-suited for everyday driving and towing.
Timing chain: The engine uses a timing chain instead of a belt, meaning it doesn't require the same periodic and expensive timing belt service.

You can watch this video to learn more about the Lexus GX 460 engine: 56sBern on CarsYouTube · Aug 23, 2025
Potential issues to be aware of

Rattling chain tensioner: A known issue on some models is a rattle from the driver's side timing chain tensioner that occurs after a cold start and disappears as the engine warms up.
Valley plate and timing cover leaks: Some maintenance to watch for includes potential leaks from the valley plate or timing chain cover.

Overall reliability rating

The GX 460 receives high reliability ratings from sources like RepairPal and Edmunds.
For example, the 2019 model received a rating of 4.8 out of 5 from Cars.com.
Consumer Reports even named it the most reliable vehicle in 2021.

What engine does a GX 460 have?

The Lexus GX460 is equipped with a 4.6-liter V8 engine that produces 301 horsepower and 329 lb-ft of torque. This robust, naturally aspirated engine is known for its durability and reliability over many years of service, though it is also a significant contributor to the vehicle's lower fuel economy, which is around 15 MPG on the highway. The 2024 and later models have been replaced by a twin-turbo V6 engine in the new generation of the GX.

You can watch this video for an overview of the Lexus GX460 engine and drivetrain: 1mBern on CarsYouTube · Aug 23, 2025
Engine specifications

Engine size: 4.6-liter
Configuration: V8
Horsepower: 301 hp
Torque: 329 lb-ft
Fuel type: Premium fuel is recommended for maximum performance.

Engine characteristics

Reliability: The 4.6L V8 (1UR-FE) is known for being reliable and long-lasting, with some models reaching over 200,000 miles.
Durability: Its durable, naturally aspirated design lacks some complex modern technologies like cylinder deactivation, which contributes to its dependability.
Maintenance: Regular oil changes and annual radiator cleaning are crucial to prevent overheating, which can lead to head gasket failure.
Fuel economy: The V8 is a gas guzzler, with an average city/highway mileage of around 11/15 MPG, though some users report higher highway MPG.

This video discusses the reliability and maintenance of the 4.6L V8 engine: 54sThe Long Last ExpertYouTube · Nov 7, 2024
Transition to new engine

The 2024 and later Lexus GX models have moved to a new generation and have been equipped with a new engine. The 2024 model uses a 3.4L twin-turbo V6 engine that produces 349 hp and 479 lb-ft of torque.

This video explains why the new generation of GX has a new engine: 55sShooting CarsYouTube · Jun 18, 2025

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.