The Infiniti QX56 is a luxury full-size SUV known for its spacious interior and powerful performance. However, not all model years are equally reliable. If you're considering purchasing a used QX56, it’s crucial to know which years to avoid due to common problems and reliability issues.

Years to Avoid

2004-2006 Models

The early years of the Infiniti QX56, particularly from 2004 to 2006, are generally regarded as the least reliable. Owners have reported numerous issues, including:

  • Service Brake Problems: These models frequently faced brake malfunctions that could compromise safety.

  • Airbag Issues: Problems with the airbag systems were also reported, raising concerns about passenger safety.

  • Engine Problems: Owners noted various engine-related issues, including overheating and performance inconsistencies.

2011-2013 Models

The 2011 model, which marked the beginning of the second generation, also has significant complaints:

  • Fuel Gauge Failures: Many users reported inaccuracies in the fuel gauge readings, leading to unexpected fuel shortages.

  • Timing Chain Issues: This can lead to severe engine damage if not addressed promptly.

  • Catalytic Converter Problems: These models often experienced issues with the catalytic converter, which could trigger warning lights and affect performance.

Common Problems Across These Years

While specific issues vary by model year, several problems are commonly reported across the years to avoid:

  • Transmission Failures: Many owners have noted transmission problems, particularly in the early models.

  • Electrical System Glitches: Issues with electrical components, including lighting and multimedia systems, have been frequent complaints.

  • Suspension Concerns: Some models faced premature wear on suspension components, affecting ride quality and handling.

Conclusion

When considering a used Infiniti QX56, it is advisable to steer clear of the 2004-2006 and 2011-2013 model years due to their well-documented reliability issues. Opting for later models may provide a better ownership experience with fewer headaches related to maintenance and repairs. Always ensure a thorough inspection and review of maintenance records before making a purchase decision.