The Infiniti QX80 stands tall in the luxury SUV segment with its commanding presence, high-end interior, and powerful V8 engine. While it offers plenty of style and comfort, prospective buyers should be aware of several reliability concerns and mechanical issues that have surfaced in recent years. If you're planning to buy a QX80 in 2025, knowing the most reported Infiniti QX80 issues can help you make a more informed decision.
In this blog, we’ll break down the top infiniti qx80 common faults, their causes, symptoms, and what you can do to address them. This guide is perfect for current owners, used car buyers, or anyone considering the QX80 as their next SUV.
1. Transmission Hesitation and Rough Shifting
One of the most frequently reported Infiniti QX80 issues involves transmission performance. Many owners have complained about hard or delayed shifting, especially during acceleration or while downshifting.Affected Model Years:
- 2017 to 2023 QX80 models
- Isolated reports continuing into 2024 models
What’s Causing It?
The root of the problem often lies in faulty transmission control modules or outdated software. In some cases, the issue may be linked to worn internal components like solenoids or torque converters.Symptoms:
- Jerking or clunking when shifting gears
- Delayed acceleration
- Transmission warning lights
- Vehicle stuck in one gear (limp mode)
Solutions:
Infiniti has addressed some cases through TSBs and software updates. If you're buying used, ensure that any known software updates have been installed. In severe cases, a transmission rebuild or replacement may be necessary, which can be costly.2. Suspension Wear and Ride Quality Problems
Another well-documented Infiniti QX80 common fault is related to the suspension system, particularly in models with the Hydraulic Body Motion Control (HBMC) system. Owners have reported premature wear and degraded ride quality over time.Common Complaints:
- Bouncy or floaty ride
- Uneven handling on rough roads
- Noisy suspension components
- Vehicle sagging in the rear
Root Causes:
Over time, the hydraulic system components, including the accumulators and lines, can leak or fail. In non-HBMC models, conventional suspension parts like shocks and struts also wear out faster due to the SUV’s heavy weight.Fixes:
Routine inspections are essential. Replacing worn components or retrofitting standard shocks in place of HBMC parts may help reduce future costs. Make sure to factor suspension inspection and potential repair into your pre-purchase checklist.3. Infotainment System Glitches
Despite being a luxury vehicle, the QX80’s infotainment system has lagged behind competitors in both usability and reliability. Over the years, Infiniti has upgraded the system, but bugs persist even in some 2024 models.Reported Problems:
- Screen freezing or unresponsiveness
- Bluetooth pairing issues
- Navigation system delays
- Glitches with Apple CarPlay/Android Auto
Why It Matters:
For many luxury SUV buyers, a smooth and responsive infotainment system is a must-have. These types of Infiniti QX80 common problems may seem minor but can be frustrating in day-to-day use.Solutions:
Most infotainment bugs are software-related. Ensure the system is updated to the latest firmware. You can also request a reset or update from the dealer, especially if the vehicle is still under warranty.4. Fuel Economy and Engine Performance Concerns
Although the QX80’s 5.6-liter V8 engine delivers impressive horsepower, many drivers report below-average fuel economy and occasional performance inconsistencies.Symptoms:
- Poor MPG (as low as 12–14 mpg in city driving)
- Occasional engine knocking or hesitation
- Rough idle
- Check engine light illumination
What's Behind It?
These infiniti qx80 issues often stem from aging spark plugs, dirty fuel injectors, or outdated engine control software. In some cases, a failing mass airflow sensor or oxygen sensor may be the culprit.Fixes:
Keeping up with routine maintenance is key. Spark plug replacements, fuel system cleaning, and software updates can go a long way toward restoring engine performance. It’s also important to consider your driving habits, as aggressive driving significantly impacts MPG.5. Brake System Wear and Noise
Brake-related complaints are another set of Infiniti QX80 common faults that buyers should be aware of. Owners report that brake pads and rotors wear out quickly, and brake noise becomes an issue even at moderate mileage.Typical Problems:
- Squealing or grinding noise
- Vibrations while braking
- Premature brake pad or rotor wear
- Soft or spongy brake pedal
Affected Models:
- QX80 from 2016 to 2024
- More prevalent in vehicles with towing packages or regular city driving
Root Causes:
The heavy curb weight of the QX80, combined with its V8 engine, puts a lot of stress on the braking system. Inferior aftermarket parts or improper installation can also worsen the issue.Solutions:
Opt for high-quality OEM or premium-grade brake components. Inspect brakes every 10,000–15,000 miles and replace parts promptly to maintain stopping power and safety.Final Thoughts
The Infiniti QX80 is a powerful and luxurious SUV, but it’s not without its drawbacks. By understanding the most common Infiniti QX80 issues, you can better evaluate whether this vehicle is the right fit for your needs—or negotiate the price down if you're buying used.Quick Summary of Infiniti QX80 Common Problems in 2025:
| Issue | Common Symptoms | Severity | Fix Available? |
| Transmission Problems | Jerky shifts, delay in gear engagement | High | Yes |
| Suspension Wear | Noisy, bouncy ride, sagging | Medium | Yes |
| Infotainment System Glitches | Freezing screen, Bluetooth issues | Low | Yes |
| Poor Fuel Economy & Engine Lag | Low MPG, engine hesitation | Medium | Yes |
| Brake Wear and Noise | Squealing, soft pedal, vibrations | Medium | Yes |
Tips Before Buying a QX80 in 2025
- Request Service Records: Ask for documented maintenance history, especially for transmission and suspension work.
- Check for Recalls: Visit the NHTSA website or Infiniti’s recall page with the vehicle's VIN.
- Inspect the Suspension: Test the ride comfort and handling, especially over bumps.
- Test the Infotainment System: Check that the screen, Bluetooth, and navigation work properly.
- Hire a Mechanic for a Pre-Purchase Inspection: A professional opinion can save you thousands.
Stay Informed, Shop Smart
Being aware of these infiniti qx80 common problems doesn’t mean you should avoid the SUV entirely. Instead, it empowers you to ask the right questions and spot red flags during your car search. With regular maintenance and a well-informed purchase, many owners continue to enjoy the QX80 for years.If you found this guide helpful, share it with other car buyers or subscribe to our blog for more vehicle insights, maintenance tips, and reviews.