Used 2018 Subaru WRX STI for SaleNationwide

How much does the 2018 Subaru WRX STI cost?

Prices have held steady compared to this time last year, signaling a stable and predictable market for this model year.

There are 261 listings available, which gives you a modest amount of inventory to compare before you buy.

Is the 2018 Subaru WRX STI a good car?

Generally — the 4.33/5 user rating points to strong owner satisfaction. Owners consistently praise the thrilling driving experience, powerful engine, smooth handling, and enjoyable sound, while the car’s performance-focused setup and everyday practicality make it appealing if you want a serious driver’s car that can still handle daily use. The higher price is a recurring concern, so it tends to make the most sense if you value enthusiast appeal over bargain pricing. With 33.0% of listings marked as good or great deals, there is still some room to shop selectively.

Is the 2018 Subaru WRX STI reliable?

Owners rate it 4.33/5, a solid signal of long-term satisfaction.

The owner feedback emphasizes a reliable, enjoyable driving experience with strong performance that owners feel good about over time. That kind of satisfaction can matter for used buyers because it often reflects a car that continues to feel rewarding rather than tiring as the miles add up.

For long-term ownership, your biggest risk is less about the model’s appeal and more about how each individual example was treated before you buy.

What should I look for when buying a used 2018 Subaru WRX STI?

At 58.2% 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 screen for accidents, title issues, and any signs of repeated damage. After that, prioritize a pre-purchase inspection, especially on the drivetrain, suspension, and any areas that could show hard use. Because this is a performance-focused car, condition matters more than mileage alone, so focus on maintenance records, signs of modification, and overall wear.

Is now a good time to buy a used 2018 Subaru WRX STI?

This is a moderate buyer’s market, so you can shop selectively without expecting a deep discount on every listing.

• Deal availability: 33.0% of listings are priced as good or great deals.
• Inventory: There are 261 listings available.
• Price trend: Prices have held steady compared with last year.
• Clean inventory: 58.2% of listings are accident-free.

If you find a listing below $22,999, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2018 Subaru WRX STI's resale value?

The current average of $24,789 sits slightly below last year's $24,914.

That small decline suggests the market has been fairly stable, which is helpful if you plan to sell later because it points to predictable pricing rather than sharp depreciation swings. For a performance car like this, steady pricing can also indicate that buyers still see value in the model’s enthusiast appeal and all-weather capability. If you keep the car clean, documented, and unmodified, you improve your odds of holding stronger resale interest.

Vehicles with solid owner satisfaction ratings, like this model year's 4.33/5, tend to retain buyer demand, which supports resale value over time.

Should I buy a 2018 Subaru WRX STI 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:

• 33.0% of listings are priced as good or great deals.
• At 58.2% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have held steady compared with last year.
• Owners rate it 4.33/5 — a solid satisfaction signal.

The bottom line:

The 2018 is a strong choice if you want the WRX STI’s core formula and you’re willing to shop carefully for a clean, well-kept example. If your priority is the best possible price, you may want to compare nearby years and focus on whichever one gives you the cleanest history and strongest condition for your budget.

These recommendations are based on CarGurus' proprietary market data from September 29, 2026, CarGurus experts' opinions, and generative AI.