What engine is in the GX 470?

The GX 470 is powered by a 4.7-liter V8 engine: the 2UZ-FE.

The GX 470, produced from 2003 to 2009, uses Toyota’s 2UZ-FE 4.7-liter V8 engine. This powerplant is shared with the Lexus LX 470 and various Land Cruiser variants, delivering a balance of smooth highway performance and off-road capability that suits the GX 470’s luxury SUV remit.

Engine specifications

Key specifications at a glance:

• Displacement: 4.7 L (4471 cc)


• Engine code: 2UZ-FE


• Configuration: V8, DOHC, 32 valves


• Valvetrain: VVT-i (variable valve timing on the intake cam)


• Power output: around 235 hp (176 kW)


• Torque: around 275 lb-ft (373 Nm)


• Fuel system: Electronic fuel injection


• Transmission: 5-speed automatic (engine paired with the drivetrain)

The 2UZ-FE is chosen for durability and broad, usable torque, which helps the GX 470 manage towing, highway cruising, and off-road pacing with equal poise. The engine’s design emphasizes longevity and low-end flexibility, aligning with the model’s reputation for reliability.

Context and usage

Market and heritage: The 2UZ-FE engine powers not only the GX 470 but also the LX 470 and various Toyota/Lexus off-road platforms. This shared lineage helps with parts availability and service knowledge among owners and technicians.

Summary

The GX 470’s engine is a 4.7-liter V8 (2UZ-FE), a durable, smooth-running powerplant known for broad torque and reliability. Paired with a five-speed automatic, it underpins the GX 470’s blend of luxury comfort and genuine off-road capability.

What is the difference between GX 460 and 470?

The main differences are that the GX 460 is a more modern vehicle with a 4.6L V8 engine (with a timing chain), 6-speed transmission, and standard KDSS (Kinetic Dynamic Suspension System), while the GX 470 is older with a 4.7L V8 (with a timing belt), 5-speed transmission, and an optional KDSS on some trims. The GX 460 also has improved fuel efficiency, more horsepower, and newer features like standard rear A/C and a pop-out rear window. The GX 470, however, is often praised for its more plush interior and, for off-road enthusiasts, simpler modification process without KDSS. 
Engine and performance

• GX 460:
  • 4.6L4.6 cap L4.6𝐿 V8 with 301301301 hp, 6-speed automatic transmission, and a timing chain. 
  • Generally more fuel-efficient. 
• GX 470:
  • 4.7L4.7 cap L4.7𝐿 V8 with 263263263 hp, 5-speed automatic transmission, and a timing belt. 
  • While less powerful, some feel its torque is more noticeable. 

Features and technology

• GX 460:
  • Standard KDSS (Kinetic Dynamic Suspension System) for better handling.
  • Crawl control is available on some models.
  • Features like rear air conditioning, cooled front seats, and a pop-out rear tailgate window are more common.
• GX 470:
  • KDSS was an optional feature, primarily on the Sport trim.
  • Does not have crawl control.
  • Rear air conditioning is available, but not standard on all models. 

Off-road and modification

• GX 460:
  • KDSS can make off-road suspension modifications more complex. 
• GX 470:
  • Models without KDSS are generally easier to modify for off-road use. 
  • It has a slightly better turning radius. 

Reliability and maintenance

• GX 460:
  • Has a timing chain, which requires less maintenance than a timing belt.
  • The aluminum engine block is lighter but more susceptible to damage from overheating.
• GX 470:
  • The timing belt requires replacement every 100,000100 comma 000100,000 miles or 101010 years.
  • The cast-iron engine block is heavier but generally very durable. 

What year to avoid Lexus GX470?

The 2003 Lexus GX470 is often cited as the worst model year due to drivetrain issues like clunking noises, and the 2006 model also received a high number of complaints, particularly for drivetrain problems. Other years to be cautious about include models with the optional KDSS system for off-road enthusiasts due to potential costs, and early models (2004 and 2005) for dashboard cracks, dry-rotted wheels, and less engine power compared to later models. 
You can watch this video to learn about common problems to look for when buying a Lexus GX470: 52sRob DrivesYouTube · Feb 11, 2021
Specific model years to be cautious about

• 2003 Lexus GX470: Considered the worst model year by some sources due to specific drivetrain issues, such as clunking and squealing noises, and higher repair costs. 
• 2006 Lexus GX470: Received a high number of owner complaints, particularly regarding drivetrain problems. 
• Models with KDSS: If you plan to heavily modify the vehicle for off-roading, models with the Kinetic Dynamic Suspension System (KDSS) may be best to avoid due to potential complexity and cost of repairs or modifications. 

Common issues across the GX470 lifespan

• Drivetrain issues: Reports of clunking and squealing noises have been associated with certain model years. 
• Dashboard cracks: A common and potentially expensive issue across many model years, especially in warmer climates. 
• Timing belt and water pump: A crucial maintenance item. The timing belt should be replaced around every 90,000 miles, or the vehicle should have a documented history of this replacement. 
• Navigation system: The built-in navigation system is outdated and can be difficult to upgrade or repair. Many owners recommend using a smartphone for navigation instead. 
• Suspension and transmission: During a test drive, listen for unusual noises from the suspension and check for smooth transmission shifts, as these can indicate wear. 

This video discusses the maintenance of a Lexus GX470, including the timing belt replacement: 58sCar WizardYouTube · Feb 22, 2022

Is the GX470 the same as the 4Runner?

No, the Lexus GX470 is not a Toyota 4Runner, but they are closely related, sharing the same platform and a similar powertrain. The GX470 is the luxury version, based on the Toyota Land Cruiser Prado, and is differentiated by its premium interior, standard V8 engine, and full-time four-wheel-drive system, whereas the 4Runner is a more rugged and utilitarian SUV.
 
This video compares the Lexus GX470 and Toyota 4Runner: 59sMichael TomkoYouTube · Jun 20, 2025
Key differences and similarities
This video highlights the differences between the GX470 and 4Runner: 55sCrutchfield AutomotiveYouTube · Jan 18, 2021

Feature	Lexus GX470	Toyota 4Runner
Branding	Luxury (Lexus)	Mainstream (Toyota)
Platform	Toyota Land Cruiser Prado	Toyota 4Runner platform
Engine	Standard 4.7L V8	Available 4.0L V6 or 4.7L V8
Drivetrain	Standard full-time four-wheel drive	Part-time four-wheel drive in V6 models; full-time in V8 models
Interior	More luxurious, with features like standard heated seats and a standard third row	More utilitarian, with a sliding rear window in most models
Exterior	More refined styling	More rugged and utilitarian styling

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You can watch this video to learn about the design elements of the Lexus GX470: 29sJax LeonardYouTube · May 6, 2021

What engine does the GX470 have?

The 4.7-liter V8 engine in the GX 470 was the same as used on the larger LX 470. The firm next introduced the second-generation model in 2009, badged GX 460 to reflect the switch to a 4.6-liter V8 engine.