Used 2018 INFINITI QX80 for Sale nearDetroit, MI

How much does the 2018 INFINITI QX80 cost?

Prices have softened 13.58% compared to this time last year, making it a favorable time to shop this model year.

There are 700 listings available, which gives you a solid pool to compare prices and equipment.

Is the 2018 INFINITI QX80 a good car?

Yes — the 4.7/5 user rating points to strong owner satisfaction. Owners consistently praise the ride quality, attractive design, and abundance of safety features, and many also appreciate the value it offers for a luxury SUV. For you, that makes it a compelling choice if you want a full-size luxury SUV with a comfort-first personality and strong towing ability. With 34.7% of listings marked as good or great deals, there is still meaningful shopping opportunity.

Is the 2018 INFINITI QX80 reliable?

Owners rate it 4.7/5, a strong signal of long-term satisfaction.

Owner feedback highlights a vehicle that feels dependable in daily use, with praise centered on comfort, ride quality, and the features that make it easy to live with over time. The repeated positive comments about value and satisfaction suggest many owners feel confident keeping it long term. For used buyers, the main ownership risk is less about outright satisfaction and more about the costs that can come with a large luxury SUV, especially if maintenance history is unclear.

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

At 64.7% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should run a vehicle history report on every candidate and prioritize listings with clean records and consistent service documentation. A pre-purchase inspection should focus on body condition, signs of prior repair, and whether the luxury features and safety systems work as expected. Because this is a large SUV, pay close attention to wear items and overall condition 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 patiently but should move quickly on strong listings.

• Deal availability: 34.7% of listings are priced as good or great deals.
• Inventory: There are 700 listings available.
• Price trend: Prices have softened 13.58% compared with last year.
• Clean inventory: 64.7% of listings are accident-free.

If you find a listing below $18,503, 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 $18,503 sits slightly below last year's $21,410.

That price decline suggests the market has already adjusted downward, which can make future resale more sensitive to condition, mileage, and maintenance history. If you buy well and keep the SUV in strong shape, you may be better positioned to protect value when it is time to sell. The current pricing also means your entry cost is lower than it was a year ago, which can help offset some depreciation risk.

Vehicles with strong owner satisfaction ratings, like this model year's 4.7/5, 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:

• 34.7% of listings are priced as good or great deals.
• At 64.7% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 13.58% compared with last year.
• Owners rate it 4.7/5 — a strong satisfaction signal.

Consider the 2019 if:

• At $20,282, the 2019 costs more than the current year's $18,503 average.
• It is more lavish and pricier, with a more upscale feel.

The bottom line: The 2018 is the better primary pick if you want the stronger value proposition and a lower entry price. If you are more price-sensitive, the 2018 gives you the same core formula with a softer market price, while the 2019 makes sense only if you want to spend more for a slightly more lavish experience.

How does the 2018 INFINITI QX80 compare to the 2018 Nissan Armada?

These recommendations are based on CarGurus' proprietary market data from November 10, 2026, CarGurus experts' opinions, and generative AI.