Used 2018 INFINITI QX80 for Sale nearPhoenix, AZ

How much does the 2018 INFINITI QX80 cost?

Prices have softened 13.71% compared to this time last year, making it a favorable time to shop this model year.

There are 693 listings available, which gives you a meaningful pool to compare prices and equipment.

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 most often praise its excellent ride quality, attractive design, and abundance of safety features. The overview also shows why it appeals to you if you want a full-size luxury SUV with real utility, since it combines towing ability, premium equipment, and a body-on-frame layout. With 36.2% of listings marked as good or great deals, there is still room to find a compelling value.

Is the 2018 INFINITI QX80 reliable?

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

Owner feedback highlights a dependable-feeling ownership experience, with praise centered on ride quality, luxury features, and the kind of comfort that helps a vehicle feel trouble-free over time. The same feedback also suggests buyers value it for long-term use rather than short-term novelty. For used shoppers, that means your biggest ownership risk is less about the concept and more about finding a well-kept example with a clean history and solid maintenance.

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

At 63.5% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should start with a vehicle history report so you can separate clean examples from those with prior damage. After that, prioritize a thorough pre-purchase inspection, especially if the listing price looks unusually attractive. Focus on overall condition, repair quality, and signs of wear that matter on a large luxury SUV.

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

This is a moderate market, so you can be selective without expecting every listing to be a bargain.

• Deal availability: 36.2% of listings are priced as good or great deals.
• Inventory: There are 693 listings available.
• Price trend: Prices have softened 13.71% compared with last year.
• Clean inventory: 63.5% of listings are accident-free.

If you find a listing below $18,979, 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 $19,035 sits slightly below last year's $22,059.

That decline suggests the market has already adjusted downward, which can help you buy at a more favorable entry point today. For future resale, the key question is whether you can preserve condition and documentation well enough to stand out from the broader used inventory. A clean history and strong maintenance record matter more when the market is already pricing in depreciation.

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:

• 36.2% of listings are priced as good or great deals.
• At 63.5% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 13.71% compared with last year.
• Owners rate it 4.6/5 — a strong satisfaction signal.

Consider the 2019 if:

• At $21,264, the 2019 costs more than the current year's $19,035 average.
• It feels more lavish and pricier.

The bottom line: If you want the better value, the 2018 is the stronger starting point because it combines a lower average price with solid owner satisfaction and meaningful deal availability. If you are willing to pay more for a pricier, more upscale-feeling alternative, the 2019 is the secondary path to consider.

These recommendations are based on CarGurus' proprietary market data from September 15, 2026, CarGurus experts' opinions, and generative AI.