Is the 2006 GX470 reliable?

The 2006 Lexus GX 470 is generally regarded as a dependable used SUV, built on Toyota’s proven reliability platform. With proper maintenance, these vehicles can deliver many miles with relatively modest repair costs for a luxury SUV of its era.

This article assesses the reliability profile of the 2006 GX470, what keeps it durable, common issues as the model ages, buying tips for used examples, and current maintenance expectations. The goal is to provide a clear, up-to-date view grounded in owner experiences, industry assessments, and typical repair data.

Reliability profile: why the GX470 tends to deliver long-term value

Several factors contribute to the GX470’s reputation for durability. The following list highlights the core reliability drivers you’ll typically find in this generation.

• Proven Toyota/Lexus drivetrain heritage with simple, durable engineering and wide parts availability.


• Durable V8 engine (timing chain driven) known for longevity with regular maintenance.


• Robust full-time four-wheel-drive system and drivetrain components designed for long life.


• Quality interior components that tend to age well for a luxury SUV of its era.


• Strong resale value and abundant service-history data, aiding owners in predictable maintenance planning.

Taken together, these elements help explain why many 2006 GX470s remain reliable daily drivers into later miles when properly cared for.

Common issues to watch as these models age

As the GX470 ages, typical wear and aging electronics or mechanical components can surface. Being aware of these issues helps buyers and owners manage maintenance and avoid surprises.

• Suspension wear: control arms, bushings, and ball joints can develop play or noise at higher mileages.


• Brake system wear: rotors, pads, and calipers may require attention as braking performance degrades with age.


• Air conditioning and cooling components: condensers, compressors, and hoses can fail or lose efficiency in older units.


• Engine oil leaks and gasket wear: valve-cover gaskets and other seals can develop small leaks over time.


• Transmission and 4WD wear: smooth shifting is typical, but high-mileage examples may show hesitation or transfer-case wear.


• Electrical quirks: aging wiring and sensors can trigger intermittent warning lights or minor faults.


• Rust and underbody corrosion: depending on climate and maintenance history, frame and body rust can appear on older examples.

Even with these potential issues, many GX470s continue to perform reliably with timely maintenance, and major failures are less common than in some competing luxury SUVs of the era.

What to check before buying a used 2006 GX470

Before purchasing a used GX470, perform these checks and obtain documentation to gauge reliability and anticipated maintenance needs.

• Service history: verify regular maintenance, fluid changes, and any major repairs; confirm that the timing chain and related components have been inspected at recommended intervals.


• Recalls and campaigns: ensure open recalls have been addressed and all campaign actions completed.


• Engine and exhaust: look for oil leaks, listen for unusual engine noises, and check exhaust for excessive smoke or knocking.


• Transmission and 4WD: test shifting across gears and verify smooth 4WD engagement; note any shudder or slipping.


• Suspension and steering: check for play, clunking, or uneven tire wear indicating worn components.


• Cooling system: inspect radiator, hoses, water pump, and thermostat for leaks or history of overheating.


• Electrical systems: test climate control, windows, locks, lights, and dashboard gauges for consistency.


• Rust and frame integrity: inspect underbody for rust, especially in regions with road salt or high humidity.


• Tire and alignment: confirm tire condition and look for alignment issues that could indicate suspension or steering wear.

Careful documentation of these checks helps prospective buyers estimate future maintenance costs and reliability expectations for a 2006 GX470.

Maintenance and ownership cost considerations today

Owners of aging GX470s should plan for ongoing maintenance typical of a luxury SUV with Toyota underpinnings. The following points outline what to expect for routine care and potential mid-range repairs.

• Regular maintenance: oil changes, filter replacements, and fluid flushes; costs vary by shop but are generally in line with other premium SUVs of the era.


• Key wear items: brakes, tires, suspension components, and belts/hoses as mileage increases.


• Engine and drivetrain components: cooling system parts (radiator, water pump, hoses) and possible transmission service as the vehicle ages.


• Common upgrades and replacements: batteries typically last several years; electrical or sensor repairs may arise with age.

Overall, maintenance costs for a well-kept GX470 are manageable relative to many luxury rivals, though they rise with mileage and require timely attention to avoid bigger issues.

Summary

For a 2006 GX470, reliability is generally favorable when the vehicle has a complete service history and has been well maintained. Its Toyota-based drivetrain and solid build contribute to long lifespans, with most common issues being routine aging items rather than catastrophic failures. Prospective buyers should verify maintenance records, inspect critical systems, and budget for typical aging items. When cared for properly, the GX470 can remain a dependable family SUV well into the high-mileage range.

Key takeaways

• Strong reliability for a luxury SUV of its era, especially with regular maintenance.


• Major failures are not common, but aging components require proactive service.


• Solid resale value and abundant parts availability make ownership practical for many years.

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

What problems did the 2006 GX 470 have?

Top 2006 Lexus GX470 Problems

• Clunk Type Noise From Rear of Vehicle When Stopping.
• The Sunroof May Jam or Not Close Correctly.
• Airbag Warning Light With Code B0111 and/or B0116.
• Seat Position Fault Code B1153.
• Check Engine Light With Codes P0440, P0441, P0442, or P0446.
• Loud Vacuum Cleaner Noise on Cold Start.

How much is a 2006 Lexus GX470 worth?

The 2006 Lexus GX 470's price typically ranges from approximately $7,900 to $17,000, depending on factors like mileage, condition, and location. Its original MSRP was around $47,000, and the national fair purchase price is currently around $8,382 according to KBB.
 
Current pricing

• Nationwide average: Prices can vary significantly based on vehicle condition and mileage, with listings ranging from roughly $7,850 to $17,000. 
• Example listings:
  • A 2006 GX 470 with 136,096 miles was listed for $16,945. 
  • Another listing for a 2006 GX 470 with 227,055 miles was priced at $7,995. 
• Original price: The original MSRP for the 2006 GX 470 was about $47,185. 

Factors that influence the price

• Mileage: Lower mileage vehicles will command higher prices.
• Condition: The overall mechanical and cosmetic condition of the vehicle is a major factor.
• Modifications: Aftermarket modifications can increase or decrease the value depending on what they are and the buyer's preference.
• Location: Prices can vary based on the local market. 

How to get an accurate valuation

• Check online resources: Use sites like Kelley Blue Book and Edmunds to get a valuation based on your specific vehicle's features and condition.
• Consult a professional: A mechanic or a Lexus dealership can provide a professional appraisal. 

How long will a 2006 Lexus GX470 last?

Typically, you can expect that a Lexus GX will survive 250,000-300,000 miles with excellent care. Some might not make it to this point, but those who drive well and are excellent at maintenance could see it past this point.