How much does the 2018 INFINITI Q50 cost?

Prices have softened 5.60% compared to this time last year, making it a favorable time to shop this model year.

There are 719 listings available, which suggests you have a workable amount of inventory to compare before you buy.

If you find a listing below $16,073.50, 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. The overview also frames it as a good fit if you value a well-equipped, powerful sedan at a competitive price rather than a radically different take on the segment. With 26.1% of listings marked as good or great deals, you still 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 emphasizes that the car can be counted on for performance, power, and acceleration, while also describing it as a model people enjoy living with over time. That kind of feedback matters because it suggests the Q50’s appeal is not just about first impressions; it also has the kind of dependable character many used buyers want in a long-term ownership choice.

For used buyers, the main long-term risk is less about the car’s core appeal and more about finding one that has been maintained well and hasn’t accumulated avoidable wear.

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

At 49.2% 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, put inspection priority on body condition, panel alignment, and signs of inconsistent repairs, since accident history can affect both value and future ownership confidence. It also makes sense to focus on overall condition and maintenance quality, because a well-kept example is more likely to deliver the performance and comfort buyers expect from this model.

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

This looks like a moderate market, so you can buy now if the right car appears, but selective shoppers should still compare listings carefully.

• Deal availability: 26.1% of listings are priced as good or great deals.
• Inventory: There are 719 listings available.
• Price trend: Prices have softened 5.60% compared with last year.
• Clean inventory: 49.2% of listings are accident-free.

If you find a listing below $16,073.50, 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 $16,561 sits slightly below last year's $17,543.

That price movement suggests the model has softened enough to create a more approachable entry point for used buyers, but it also means future sellers may need to stay realistic on pricing. If you buy well now and keep the car in strong condition, you can help protect your exit value later. The model’s strong owner satisfaction also supports demand, which can help resale performance over time.

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:

• 26.1% of listings are priced as good or great deals.
• At 49.2% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 5.60% compared with last year.
• Owners rate it 4.47/5 — a solid satisfaction signal.

The bottom line: If you want the Q50’s mix of power, equipment, and value, the 2018 model is a sensible primary target, especially if you find a clean example with strong history and a competitive price. If you’re especially price-sensitive, you can also use the market’s softer pricing to compare nearby years and choose the best combination of condition, history, and asking price rather than focusing on the badge year alone.

These recommendations are based on CarGurus' proprietary market data from August 21, 2026, CarGurus experts' opinions, and generative AI.