2022 Infiniti QX80 Ownership: Common Long-Term Maintenance Tips to Keep Your V8 Beast Roaming
There is a specific kind of pride that comes from pulling up to a campsite in a 2022 Infiniti QX80, the hydraulic suspension leveling out the load from a week’s worth of gear, the massive 5.6-liter V8 idling quietly as you unload the kids, and realizing this full-size luxury SUV is built for the long haul—if you know how to take care of it.
Owning a QX80 is a statement. You chose the big one. The one with the 400-horsepower V8 that sounds like American muscle but wears Japanese luxury engineering on its sleeve . But here is the thing about owning a vehicle this size with this much power: it asks for a little more attention than your average sedan. The 2022 model year brought a sweet spot—it got the big 12.3-inch touchscreen and wireless Apple CarPlay, but kept the tried-and-true V8 and body-on-frame toughness that has made this platform a legend .
If you are planning to keep your QX80 for the long run—past the warranty, past the first 50,000 miles, and into the “forever car” territory—you need a game plan. Let’s talk about the common issues, the maintenance schedules you cannot ignore, and how to keep that 5.6-liter V8 happy for 200,000 miles.
TL;DR
The 2022 Infiniti QX80 is a mechanically robust full-size SUV, but it has a few quirks that owners need to watch. Fuel economy is brutally bad (expect single digits if you tow), and early production models have reported issues with fuel pumps and brake components . However, following Infiniti’s strict maintenance intervals for steering components, brake fluid, and the hydraulic body motion system will prevent most major headaches. The key to long-term ownership is staying ahead of the routine stuff and using genuine parts .
Key Takeaways
- The V8 is a Gem, But Thirsty: The 5.6-liter engine is proven, but it drinks premium fuel. Real-world testing shows consumption can hit 20.1 L/100 km (about 11.7 mpg) in mixed driving .
- Fuel Pump Awareness: Some 2022 owners have reported failures of both high-pressure and in-tank fuel pumps within the first year of ownership .
- Brake Pedal Click: A “clicking” or humming noise from the brakes around 10,000 miles has been reported, and some dealers struggle to fix it .
- Steering Inspections: Infiniti recommends inspecting the steering gear and linkage every 30,000 miles or 24 months to catch wear early .
- Battery Care is Critical: The QX80’s electrical load is high. Infiniti warns against parasitic drain from accessories and recommends checking the battery fluid level regularly in hot climates .
Understanding the 2022 QX80: A Modern Classic
Before we dive into the grease and grime, let’s appreciate what you own. The 2022 QX80 is a bit of an anomaly. While everyone else moved to turbo V6s and unibody construction, Infiniti stuck with a 5.6-liter V8 making 400 horsepower and 413 lb-ft of torque, bolted to a seven-speed automatic . It shares its bones with the Nissan Armada, which means parts are generally available and the aftermarket is decent .
The cabin is massive. You get 470 liters of cargo space behind the third row, and a cavernous 2,693 liters with everything folded flat . It is a road trip machine. But road trips put miles on things, and miles mean maintenance.
The 2022 model is the first year to get the 12.3-inch Infiniti InTouch touchscreen, making it feel much more modern than earlier models despite the platform’s age .
The Powertrain: Keeping the 5.6-Liter V8 Alive
Oil Changes Are Cheap, Engine Rebuilds Are Not
This seems obvious, but the VK56VD engine in the QX80 is a high-performance V8 with variable valve timing. It needs clean oil. Do not stretch your oil changes past 5,000 miles, especially if you tow. The owner’s manual provides a schedule, but if you fall into the “severe service” category (towing, idling, extreme temps), you need to change it more often .
Watch for:
- Fuel Pump Failures: A few owners on forums and review sites have reported replacing both high-pressure fuel pumps and in-tank pumps early in ownership . If you notice hard starting or hesitation, get the fuel system checked immediately. This is one of those “infuriating” problems that can leave you stranded.
- Coolant Checks: The engine cooling system is vital. Check the coolant level in the reservoir when the engine is cold . Infiniti recommends using only Nissan Long Life Antifreeze (Blue). Mixing coolants can shorten the service life .
“The Herculean strength of this sizeable sport utility was on full display while towing, the QX80 making child’s play of the roughly 3,000 lb hooked up to the back.”
Transmission and Drivetrain Care
The seven-speed automatic is generally robust, but it works hard pushing 6,000+ pounds around. There is a P (Park) position mechanism check you can do yourself: on a steep hill, make sure the vehicle holds securely in Park without using the parking brake . If it slips, have the linkage inspected.
If you have the 4WD model, engage the low-range occasionally to keep the actuators lubricated. Letting it sit unused for years is how seals dry out.
Chassis and Steering: The Heavy-Duty Bits
This is where the QX80 differs from a car-based crossover. It has a real frame, a solid rear axle (with hydraulic assist), and steering components that take a beating.
Steering Gear and Linkage Inspections
Infiniti’s official schedule demands an inspection of the steering gear and linkage every 30,000 miles or 24 months . This includes the steering rack, tie rod ends, and ball joints.
- Why it matters: Worn steering components lead to wandering on the highway and can cause uneven tire wear.
- What to feel for: Loose steering, clunking over bumps, or a vibration in the steering wheel.
The 2022 model uses an electric power steering system that reviewers note is “a little light,” but it should be precise . If it develops play, get it checked.
Hydraulic Body Motion Control (The Magic Stuff)
On higher trims (like the Sensory), the QX80 features a hydraulic body motion control system. It uses hydraulic fluid pressurized in corners to eliminate body roll .
- Maintenance: This system is generally sealed, but it relies on the same hydraulic principles as brakes. If you ever have work done on the suspension, ensure the shop is familiar with this system. It is not a standard shock absorber.
Braking System: Stopping 3 Tons of Luxury
Stopping a vehicle this size is a serious task. The 2022 QX80 has “highly capable brakes,” but they require vigilance .
The 15,000-Mile Brake Inspection
Infiniti mandates inspecting the brake lines and cables every 15,000 miles or 12 months .
- Look for: Corrosion, leaks, chafing, or cracks in the rubber hoses.
- Brake Fluid: Check the fluid level in the reservoir regularly . Brake fluid absorbs water over time, which leads to internal corrosion in the brake lines and calipers.
The Notorious Brake Pedal Click
Here is a specific issue reported by a 2022 owner on Kelley Blue Book. At around 10,000 miles, the vehicle developed “a clicking in the brake pedal and also a humming noise when braking.” The dealer reportedly could not fix it, claiming it was “the way it is” .
If you hear this, do not accept “it’s normal.” Push your dealer to inspect the master cylinder, brake booster, and ABS actuator. Document everything. This is a safety component, and a spongy or noisy pedal is a red flag.
Electrical System and Battery: Preventing Parasitic Drain
The QX80 is loaded with electronics—tri-zone climate, 17 speakers, rear-seat entertainment, and all the driver aids. This puts a heavy load on the battery.
Battery Maintenance
Infiniti is very clear about this: Check the battery fluid level . The QX80 battery is not necessarily a “maintenance-free” unit. In hot weather, the fluid can evaporate.
- The Procedure: Check the fluid level in each cell. It should be between the MAX and MIN lines. If it is low, use distilled water to top it off.
Avoiding a Dead Battery
The official Infiniti maintenance guide lists specific situations that can drain your battery :
- Installing accessories that draw power when the engine is off (like dash cams hardwired incorrectly).
- Long-term use of phone chargers, GPS units, or DVD players with the engine off.
- Infrequent driving or only driving short distances.
If you only drive your QX80 on short trips around town, the alternator never fully recharges the battery after startup. Invest in a battery tender if the car sits for more than a few days.
Intelligent Key Battery
It is the little things that annoy you. The fob battery for the Intelligent Key system should be inspected at 22,500 miles or 18 months . If it dies, you have to do a special engine start procedure (holding the fob to the button). Replacing it early is cheap insurance against frustration.
Tires, Wheels, and Alignment
The QX80 rides on massive tires—usually P275/50HR22 on the higher trims . These are expensive to replace.
Rotation is Key
You must rotate your tires every 5,000 to 7,500 miles. The owner’s manual provides the interval, but given the weight of this truck, rotating them at every oil change (5,000 miles) is a solid strategy . This promotes even wear and extends the life of your investment.
Alignment Checks
If the vehicle pulls to one side on a straight, flat road, or if you see “cupping” on the edges of the tires, get an alignment . The heavy suspension components can be knocked out of alignment by potholes, and the QX80 is too heavy to be messing around with poor tire contact.
Long-Term Maintenance Comparison: Protecting Your Investment
To keep your QX80 looking and driving like new for years, you need to protect the cabin and the mechanicals. Here is how common protective accessories stack up against the specific wear-and-tear of QX80 ownership.
| Maintenance Area | Recommended Action | Interval | DIY Difficulty | Cost Impact |
|---|---|---|---|---|
| Engine Oil & Filter | Use synthetic, check level between changes | Every 5,000 miles | Easy | $$ |
| Steering Inspection | Check linkage, boots, and power steering lines | Every 30,000 miles | Moderate | $ (Inspection) |
| Brake Fluid Flush | Prevent moisture absorption and corrosion | Every 20,000-30,000 miles | Moderate | $$ |
| Battery Fluid | Check electrolyte levels (if accessible) | Every 15,000 miles | Easy | $ |
| TPMS Sensors | Replace when changing tires due to age | Every 60,000-70,000 miles | Professional | $$$ |
Always secure heavy cargo in the rear storage area to prevent shifting during sudden braking or sharp cornering. Bold safety reminder
FAQ: Your 2022 Infiniti QX80 Ownership Questions Answered
What is the real-world fuel economy of the 2022 QX80?
The EPA estimates 13 city/19 highway, but real-world testing often shows much lower numbers, especially in city driving. AutoTrader recorded 20.1 L/100 km (approx. 11.7 mpg) during mixed testing, and it requires premium fuel .
Is the 2022 QX80 reliable?
Overall, yes. RepairPal gives it an “Above Average” 4 out of 5 stars, ranking it 1st out of 20 among Luxury Fullsize SUVs . However, individual owners have reported issues with fuel pumps and infotainment glitches .
How often should I inspect the brakes on my QX80?
Infiniti recommends a visual inspection of the brake lines, cables, pads, and rotors every 15,000 miles or 12 months . Listen for clicking or humming noises, which some 2022 owners have reported .
Can I install a trailer brake controller on my 2022 QX80?
One owner reported being told that installing an aftermarket trailer brake controller could void the warranty . You should verify with your dealer and consult the owner’s manual for the approved towing equipment before making modifications.
Why is my QX80 battery dying so fast?
The QX80 has a high electrical load. Infiniti warns that leaving accessories plugged in or taking only short trips can prevent the battery from charging properly . Check the battery fluid level and consider using a battery maintainer if the car sits idle.
How long do the 22-inch tires last?
Because of the vehicle’s weight (over 6,000 lbs), tires can wear faster than on smaller SUVs. Regular rotation every 5,000 miles is critical to maximizing tread life .
Does the 2022 QX80 require special maintenance for the suspension?
If you have the top trim with hydraulic body motion control, ensure any suspension work is done by a dealer or shop familiar with the system . It is not a standard coil-over setup.
The Final Verdict: Long-Term Success
The 2022 Infiniti QX80 is a vehicle you can keep for a decade if you treat it right. The platform is proven, the V8 is a legend, and the 2022 tech updates (wireless CarPlay, big screen) mean it doesn’t feel ancient yet .
The key to winning at long-term ownership is simple: follow the schedule. Inspect the steering at 30k . Check those brake lines at 15k . Keep an eye on the battery fluid . And if you hear a weird noise from the fuel pump or brakes, don’t ignore it—get it documented while the warranty is still there .
Do those things, and your QX80 will keep hauling your family, your boat, and your dreams for hundreds of thousands of miles.
What’s your favorite hidden feature inside your Infiniti? Share your thoughts in the comments below.
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