How much does the 2018 INFINITI Q50 cost?

Prices have softened 4.85% compared to this time last year, making it a favorable time to shop this model year.

There are 673 listings available, which gives you a meaningful amount of inventory to compare.

If you find a listing below $16,071.95, that's toward the low end of the year-round range and worth acting on quickly.

Is the 2018 INFINITI Q50 a good car?

Generally — the 2018 INFINITI Q50 earns a 4.47/5 user rating, which points to strong owner satisfaction. Drivers consistently praise its performance, features, handling, power, and acceleration, and the model’s standard equipment and broad feature set make it appealing if you want a luxury sedan with a familiar formula rather than a radically different one. The overview also frames it as a midsize premium sedan that leans on power, equipment, and value, which fits shoppers who prioritize a well-equipped, sporty-feeling car. With 22.7% of listings marked as good or great deals, you have some room to shop selectively.

Is the 2018 INFINITI Q50 reliable?

Owners rate it 4.47/5, a solid signal of long-term satisfaction.

The owner feedback points to a car that many drivers find dependable in day-to-day use, especially when it comes to performance and the overall ownership experience. The repeated praise for power, acceleration, and handling suggests a model that can feel trouble-free when maintained properly, even if some owners wish for more modern technology and a more comfortable ride. For used buyers, the main long-term ownership risk is less about the core appeal and more about finding a well-kept example that has been cared for consistently.

What should I look for when buying a used 2018 INFINITI Q50?

At 47.3% 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 cars with prior damage. After that, make a pre-purchase inspection a priority, especially if the listing price looks unusually attractive. Focus your condition check on signs of past repairs, uneven wear, and anything that suggests the car has been used harder than the mileage alone would imply.

Is now a good time to buy a used 2018 INFINITI Q50?

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

• Deal availability: 22.7% of listings are priced as good or great deals.
• Inventory: There are 673 listings available.
• Price trend: Prices have softened 4.85% compared with last year.
• Clean inventory: 47.3% of listings are accident-free.

If you find a listing below $16,071.95, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2018 INFINITI Q50's resale value?

The current average of $16,572 sits slightly below last year's $17,416.

That price movement suggests the market has cooled a bit, which can make the car easier to buy now but may also limit upside if you plan to sell soon. For a future seller, the key takeaway is that a softer market can pressure resale values unless your car stands out for condition, mileage, and history. Strong owner satisfaction can help support demand, but you should still expect resale to depend heavily on how well the car is maintained and presented.

Vehicles with solid owner satisfaction ratings, like this model year's 4.47/5, tend to retain buyer demand, which supports resale value over time.

Should I buy a 2018 INFINITI Q50 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:

• 22.7% of listings are priced as good or great deals.
• At 47.3% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 4.85% compared with last year.
• Owners rate it 4.47/5 — a solid satisfaction signal.

The bottom line: The 2018 is a strong choice if you want the Q50’s familiar mix of power, equipment, and value at a softer price point than last year. If you’re especially price-sensitive, you may want to compare nearby years and focus on the cleanest, best-documented example rather than chasing the lowest sticker price alone.

These recommendations are based on CarGurus' proprietary market data from August 28, 2026, CarGurus experts' opinions, and generative AI.