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 265 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 2018 Subaru WRX STI earns a 4.33/5 user rating, which points to strong owner satisfaction. Owners consistently praise the thrilling driving experience, powerful engine, smooth handling, and enjoyable sound. The model’s rally-inspired performance and everyday usability make it a fit if you want a serious performance sedan with practical all-wheel-drive capability. With 34.3% of listings marked as good or great deals, you still have 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 also points to a car that feels dependable in the ways enthusiasts care about most, especially when it comes to performance that stays engaging over time. The strong satisfaction around the driving experience suggests you can count on the WRX STI to deliver the character buyers expect from it. For used buyers, the main long-term ownership risk is less about the model’s appeal and more about how hard a specific example has been driven and maintained.

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

At 55.5% 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 cleaner examples from cars with accident records. After that, prioritize a thorough pre-purchase inspection, especially on the drivetrain, suspension, brakes, and signs of heavy use. Because this is a performance-focused model, condition matters more than mileage alone, so focus on maintenance records, modification history, and overall wear.

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

This is a moderate market, so you can be selective without expecting a deep buyer’s market.

• Deal availability: 34.3% of listings are priced as good or great deals.
• Inventory: There are 265 listings available.
• Price trend: Prices have held steady compared with last year.
• Clean inventory: 55.5% of listings are accident-free.

If you find a listing below $22,992, 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 $24,971 sits slightly above last year's $24,814.

That small increase suggests the market has stayed stable rather than swinging sharply in either direction. For a future seller, that kind of pricing pattern can be helpful because it points to steady buyer interest instead of a weakening market. The WRX STI’s enthusiast appeal also helps support demand, especially when a car is clean, well maintained, and not heavily modified.

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:

• 34.3% of listings are priced as good or great deals.
• At 55.5% 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: If you want the strongest mix of current pricing stability, enthusiast appeal, and owner satisfaction, the 2018 is a sensible target. If you’re especially price-sensitive, you may want to compare nearby years and focus on the cleanest, best-maintained example rather than chasing the lowest sticker price.

These recommendations are based on CarGurus' proprietary market data from October 6, 2026, CarGurus experts' opinions, and generative AI.