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Used Infiniti QX60 Reliability: CVT Problems and Guide

JH
John H
Senior Cars Expert
8 min read

Used Infiniti QX60 Reliability: CVT Problems and Guide

The Infiniti QX60 is a popular three-row luxury SUV that has gained a loyal following over the years. Known for its elegant design, smooth ride, and upscale interior, it's a go-to choice for families seeking comfort and style. However, when considering a used Infiniti QX60, one critical question often arises: How reliable is it, particularly regarding CVT transmission issues?

In this comprehensive guide, we'll dive deep into the reliability of the used Infiniti QX60, with a special focus on the continuously variable transmission (CVT) problems that have been reported across several model years. We'll also explore common issues, ownership costs, expert insights, and what you should look for before purchasing a used QX60. Whether you're a luxury SUV enthusiast or a practical family buyer, this guide will help you make an informed decision.

Overview of the Infiniti QX60

The Infiniti QX60, formerly known as the JX35, was first introduced in 2011 as a midsize luxury crossover. Over the years, it has undergone several updates, with a significant redesign in 2014 and a full model overhaul in 2022. The QX60 is built on a unibody platform and is available with front- or all-wheel drive, powered by a 3.5-liter V6 engine paired with a CVT transmission.

It competes with rivals such as the Acura MDX, Lexus RX, and Volvo XC90. While it offers strong value in terms of features and space, its long-term reliability, especially concerning the CVT, has been a point of concern for many buyers.

Infiniti QX60 Reliability Ratings

According to major reliability sources like J.D. Power, Consumer Reports, and RepairPal, the Infiniti QX60 has mixed reliability ratings. While earlier models (2014–2016) received average scores, later models (2017–2021) saw a decline in dependability, particularly due to powertrain-related issues.

These ratings suggest that while the QX60 has its strengths, its long-term dependability is compromised by powertrain and transmission problems—most notably with the CVT system.

Understanding the CVT in the Infiniti QX60

The Infiniti QX60 uses a continuously variable transmission (CVT) across all model years. Unlike traditional automatic transmissions with fixed gear ratios, a CVT uses a pulley and belt system to provide seamless acceleration without noticeable gear shifts. This design aims to improve fuel efficiency and deliver smooth performance.

However, CVTs have a reputation for being less durable than conventional automatics, and some manufacturers—including Nissan, Infiniti’s parent company—have faced criticism for premature CVT failures in various models.

How the CVT Works in the QX60

In the QX60, the CVT is paired with a 3.5-liter V6 engine producing around 265–295 horsepower. The transmission is designed to keep the engine in its optimal power band, improving fuel economy and responsiveness. The system includes a torque converter to assist with low-speed acceleration and reduce drivetrain shock.

Despite these engineering efforts, real-world performance and long-term durability have raised red flags among owners and mechanics.

Common CVT Problems in Used Infiniti QX60 Models

When shopping for a used Infiniti QX60, it's essential to be aware of the most frequently reported CVT-related issues. Here are the key problems that have surfaced across different model years:

1. Transmission Shuddering or Jerking

One of the most common complaints is transmission shuddering—especially during low-speed acceleration or when coming to a stop. Drivers report a noticeable vibration or lurching sensation, often described as feeling like the SUV is 'slipping gears.' This symptom typically appears between 60,000 and 90,000 miles and may indicate worn transmission fluid, clogged filters, or internal belt/pulley wear.

2. Delayed or Hesitant Acceleration

Some owners experience a delay when pressing the accelerator, particularly from a stop. The car may hesitate before responding, which can be dangerous in traffic. This issue is often linked to CVT software glitches or degraded transmission fluid that fails to maintain proper hydraulic pressure.

3. Overheating and Transmission Failure

CVTs are more prone to overheating under stress, especially when towing or driving in hilly terrain. The QX60 has a towing capacity of up to 5,000 pounds, but frequent towing or aggressive driving can cause the CVT to overheat, triggering limp mode or total transmission failure.

Reports indicate that some QX60s have experienced complete CVT breakdowns as early as 75,000 miles, with repair costs exceeding $4,000.

4. Transmission Whining or Noise

A high-pitched whining noise during acceleration is another common complaint. This sound may originate from worn bearings, damaged pulleys, or low transmission fluid levels. While not always indicative of immediate failure, it's often an early warning sign.

5. Warning Lights and Error Codes

Many QX60 owners report the Check Engine Light or Transmission Warning Light illuminating on the dashboard. Common diagnostic trouble codes include:

These codes often point to internal transmission faults, fluid leaks, or electronic control module (TCM) issues.

Model Year Breakdown: Which QX60 Years to Avoid

Not all Infiniti QX60 model years are equally affected. Based on consumer complaints, recall data, and repair trends, certain years stand out for higher CVT failure rates.

2014–2016 Infiniti QX60

The second-generation QX60 (2014–2016) received a modest update and improved interior quality. Reliability during this period was relatively better than later models, but CVT issues began to appear.

These models typically have 5-year/60,000-mile limited warranties with optional extended coverage. If available, check for remaining warranty or service records.

2017–2021 Infiniti QX60

This period saw a decline in reliability. Despite minor updates, the CVT continued to be a weak point.

These models are now prime targets for high-mileage transmission issues, especially if not properly maintained.

2022–2024 Infiniti QX60

The third-generation QX60 launched in 2022 with a redesigned platform, improved technology, and updated safety features. While early reviews praise the new design, long-term reliability data is still limited.

Infiniti claims improvements to the CVT calibration and cooling system, but given the brand’s history, it's wise to wait for more consumer feedback before declaring these models problem-free.

Why Does the QX60’s CVT Fail?

Several factors contribute to CVT problems in the Infiniti QX60:

1. Design and Engineering Limitations

While CVTs offer fuel efficiency and smooth driving, they are not as robust as traditional automatics when subjected to heavy loads or frequent stop-and-go driving. The QX60’s CVT was not designed for high-performance use, yet it's tasked with moving a heavy SUV—increasing stress on components.

2. Inadequate Cooling System

The CVT cooling system in some QX60 models is under-specified. Under sustained load (e.g., highway driving in hot climates), the transmission can overheat, degrading the fluid and damaging internal parts.

3. Poor Maintenance History

Many CVT failures stem from neglected maintenance. Infiniti recommends CVT fluid changes every 60,000 miles, but many owners skip this service, assuming the fluid is 'lifetime.' Unfortunately, this leads to sludge buildup, poor lubrication, and early failure.

4. Software and Calibration Issues

The CVT relies heavily on software to manage shift points and torque delivery. Outdated or buggy firmware can cause erratic behavior, hesitation, or improper engagement. While Infiniti issued several software updates, not all dealers applied them, and some issues remain unresolved.

How to Inspect a Used Infiniti QX60 for CVT Problems

If you're considering buying a used QX60, follow this inspection checklist to assess CVT health:

1. Check the Maintenance Records

Ask for service history, especially CVT fluid changes. A well-maintained QX60 with documented fluid changes every 60,000 miles is less likely to have transmission issues.

2. Test Drive with Purpose

3. Scan for Diagnostic Trouble Codes (DTCs)

Use an OBD2 scanner to check for stored transmission codes. Even if the Check Engine Light is off, historical codes can reveal past issues.

4. Inspect Transmission Fluid

While the QX60 doesn’t have a dipstick for CVT fluid (a common complaint), a mechanic can check fluid condition via the fill plug or by extracting a sample. Look for:

5. Get a Pre-Purchase Inspection

Have a trusted mechanic or Infiniti dealership perform a comprehensive inspection. They can