Used 2018 INFINITI QX80 for Sale nearKnoxville, TN

How much does the 2018 INFINITI QX80 cost?

Prices have softened 13.43% compared to this time last year, making it a favorable time to shop this model year.

There are 723 listings available, which gives you a modest amount of inventory to compare.

Is the 2018 INFINITI QX80 a good car?

Yes — the 2018 INFINITI QX80 earns a 4.6/5 user rating, which points to strong owner satisfaction. Owners consistently praise its ride quality, attractive design, and abundance of safety features, while also noting the value it offers for a luxury SUV. That makes it a fit if you want a full-size luxury SUV with comfort, presence, and equipment rather than maximum efficiency or third-row space. With 34.9% of listings marked as good or great deals, you still have room to shop selectively.

Is the 2018 INFINITI QX80 reliable?

Owners rate it 4.6/5, a strong signal of long-term satisfaction.

Owner feedback points to a dependable ownership experience centered on ride quality, value, and the kind of features buyers tend to keep appreciating over time. The same feedback also suggests you should expect the usual used-luxury-SUV ownership tradeoffs, especially if the vehicle has seen heavy use. For used buyers, the main long-term risk is buying a neglected example, so condition and maintenance history matter.

What should I look for when buying a used 2018 INFINITI QX80?

At 65.7% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should start with a vehicle history report and confirm whether any prior damage was repaired properly. Put inspection priority on body panels, paint consistency, and signs of structural or cosmetic repair. Because this is a large luxury SUV, you should also focus on overall condition and maintenance quality rather than just mileage.

Is now a good time to buy a used 2018 INFINITI QX80?

This looks like a moderate, selective buyer’s market, so you can shop carefully and still find worthwhile options.

• Deal availability: 34.9% of listings are priced as good or great deals.
• Inventory: There are 723 listings available.
• Price trend: Prices have softened 13.43% compared with last year.
• Clean inventory: 65.7% of listings are accident-free.

If you find a listing below $18,740, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2018 INFINITI QX80's resale value?

The current average of $18,740 sits slightly below last year's $21,647.

That price movement suggests the market has cooled, which can make future resale a little more challenging if depreciation continues. If you buy at a strong price today, you may have a better chance of limiting your loss later. Condition will matter a lot, especially because buyers in this segment tend to compare examples closely.

Vehicles with strong owner satisfaction ratings, like this model year's 4.6/5, tend to retain buyer demand, which supports resale value over time.

Should I buy a 2018 INFINITI QX80 or consider a different year?

If you're weighing the 2018 against nearby model years, here's how to think about it:

Choose the 2018 if:

• 34.9% of listings are priced as good or great deals.
• At 65.7% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 13.43% compared with last year.
• Owners rate it 4.6/5 — a strong satisfaction signal.

Consider the 2019 if:

• At $21,167, the 2019 costs more than the current year's $18,740 average.
• It feels more lavish and pricier, with a more upscale presentation.

The bottom line: Choose the 2018 if you want the better value and are willing to shop carefully for condition and history. Consider the 2019 if you want to spend more for a slightly more upscale feel and can justify the higher price. If you're price-sensitive, the 2018 is the stronger starting point.

These recommendations are based on CarGurus' proprietary market data from October 6, 2026, CarGurus experts' opinions, and generative AI.