Is the 2018 Infiniti QX80 reliable?

Overall reliability is solid for the engine and core drivetrain, but expect higher running costs than a non-luxury SUV and occasional electrical/infotainment and wear-item repairs typical for a heavy full-size vehicle.

What are the most common 2018 Infiniti QX80 problems?

Common issues include suspension clunks or uneven tire wear, infotainment or sensor glitches, and brake rotor/pad wear or vibration—often influenced by driving conditions and mileage.

Are 2018 Infiniti QX80 maintenance costs expensive?

Maintenance is typically above average due to premium parts, higher fluid capacities, and the vehicle’s size. Budget extra for tires, brakes, and suspension work compared with smaller SUVs.

What are the best years to buy for the Infiniti QX80?

Many shoppers target later second-generation years like 2018+ for updated styling and features, while still focusing on service records, mileage, and condition as the biggest reliability indicators.

What should I check before buying a used 2018 Infiniti QX80?

Verify complete service history, test all cameras/infotainment functions, check for braking vibration, inspect tire wear for alignment or suspension issues, and confirm 4WD operation (if equipped) with no warning lights. For a deeper dive, get a complete owner’s guide with full specs, recommended service intervals, fluid capacities, and maintenance schedules for the 2018 Infiniti QX80.

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Reliability AnalysisBased on known issue patterns, repair cost data, and ownership trends · How we score

2018 Infiniti QX80 Reliability ReportA- grade · low risk · system-by-system breakdown

88/ 100

KeepScore

LOW RISK

Grade: A-

A powerhouse of reliability where it truly counts, offering bulletproof mechanicals with only minor electrical frustrations.

Full system breakdown + what I would do

Quick Facts · 2018 Infiniti QX80

The system most likely to surface first: infotainment & electrical systems (moderate severity).
Has 1 NHTSA recall on record — the most notable involves the back over prevention: sensing system: camera.
Outscores the 2019 Infiniti QX80 by 5 points — one of the stronger nearby years to consider.

Is the 2018 Infiniti QX80 Worth Buying?

The 2018 Infiniti QX80 is a remarkably robust and capable full-size luxury SUV, leveraging a proven, truck-based platform that promises exceptional long-term durability. While its technology might feel a bit behind some European rivals, its core mechanicals are built to last, making it one of the safest used luxury SUV choices on the market for those prioritizing reliability over cutting-edge gadgets.

Biggest Strengths

Naturally aspirated 5.6L V8 engine durability
Robust 7-speed automatic transmission
Strong body-on-frame chassis and towing capability

What Tends to Fail First on the 2018 Infiniti QX80

The systems that break first on the 2018 Infiniti QX80. Mileage windows, repair costs, and fix-before-you-buy notes are in the full report.

Infotainment & Electrical Systemsmoderate

HVAC System Componentsmoderate

Suspension Bushings & Steering Componentsmoderate

Typical mileage, cost ranges, and the exact what-to-check list are in the full report.

2018 Infiniti QX80 Recall History

1 recall on record from NHTSA. Check your VIN atnhtsa.gov to see if the repair was performed.

BACK OVER PREVENTION: SENSING SYSTEM: CAMERA

Nissan North America, Inc. (Nissan) is recalling certain 2018-2019 Nissan Altima, Armada, Frontier, Kicks, Leaf, Maxima, Murano, NV, NV200, Pathfinder, Rogue, Rogue Sport, Sentra, Titan, Titan Diesel, Versa Note and Versa Sedan vehicles, as well as Infiniti Q50, Q60, QX30 and QX80 vehicles. Additionally included are 2019 Nissan GT-R and Taxi and Infiniti QX50, QX60, Q70, Q70L vehicles. The back-up camera and display settings can be adjusted such that the rear view image is no longer visible and the system will retain that setting the next time the vehicle is placed in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."

What breaks on the 2018 Infiniti QX80?

Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.

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Other Infiniti QX80 Years to Consider

Compare KeepScores across nearby years of the Infiniti QX80. Click any year for its full report.

All Infiniti QX80 years ranked →Infiniti QX80 years to avoid →Infiniti QX80 common problems →

2018 Infiniti QX80 Alternatives

Similar class, similar year range — ranked by KeepScore.

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Frequently Asked Questions

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