Used 2021 Ford Mustang Shelby GT500 for SaleNationwide

How much does the 2021 Ford Mustang Shelby GT500 cost?

Prices are up 4.02% year-over-year — a sign of continued demand for this model year.

There are 291 listings available, which gives you a modest amount of inventory to compare before you buy.

Is the 2021 Ford Mustang Shelby GT500 a good car?

Yes — the 4.67/5 user rating points to strong owner satisfaction for this model year. The overview frames it as a high-performance, collectable Mustang with exclusive styling and performance upgrades, so it fits you best if you want a serious performance car with limited-production appeal rather than a mainstream daily driver. It was also sold exclusively as a coupe, which reinforces its focused, enthusiast-first character. With 33.3% of listings marked as good or great deals, you have some room to shop selectively.

Is the 2021 Ford Mustang Shelby GT500 reliable?

Owners rate it 4.67/5, a strong signal of long-term satisfaction.

The overview also points to a mixed reliability picture: the car is expensive to own, and the dual-clutch automatic transmission has been noted for surging, rough shifts, and premature failure. The engine may leak oil, the timing chain tensioner can fail, and a recall was issued shortly after launch to address the brake fluid warning indicator.

For a used buyer, that means long-term ownership risk is tied less to the car’s performance promise and more to careful maintenance history and mechanical condition.

What should I look for when buying a used 2021 Ford Mustang Shelby GT500?

Accident-free inventory is excellent at 95.5% — clean inventory, standard diligence applies.

You should still run a history report and verify that the car has a clean service record, especially given the transmission and engine concerns noted in the overview. Put inspection priority on the drivetrain, fluid leaks, and any signs of rough shifting or warning lights. Because this is a high-performance, expensive-to-own model, condition matters more than mileage alone.

Is now a good time to buy a used 2021 Ford Mustang Shelby GT500?

This looks like a moderate, selective buyer’s market, so you can shop patiently but should move quickly on the right car.

• Deal availability: 33.3% of listings are priced as good or great deals.
• Inventory: There are 291 listings available.
• Price trend: Prices are up 4.02% year-over-year.
• Clean inventory: 95.5% of listings are accident-free.

If you find a listing below $91,104, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2021 Ford Mustang Shelby GT500's resale value?

The current average of $98,028 sits slightly above last year's $94,244.

That upward move suggests the market is still willing to pay for this model year’s performance and collectable appeal. If you own one in strong condition, the price trend supports a healthier resale position than a year ago. Limited-production character and enthusiast demand can help keep interest steady when you decide to sell.

Vehicles with strong owner satisfaction ratings, like this model year's 4.67/5, tend to retain buyer demand, which supports resale value over time.

Should I buy a 2021 Ford Mustang Shelby GT500 or consider a different year?

If you're weighing the 2021 against nearby model years, here's how to think about it:

Choose the 2021 if:

• 33.3% of listings are priced as good or great deals.
• Accident-free inventory is excellent at 95.5% — clean inventory, standard diligence applies.
• Price trend: Prices are up 4.02% year-over-year.
• Owners rate it 4.67/5 — a strong satisfaction signal.

Consider the 2020 if:

• At $94,308, the 2020 costs less than the current year's $98,028 average.
• It emphasizes extreme performance and track-focused appeal.

The bottom line: You should lean toward the 2021 if you want the stronger current-market balance of demand, condition, and collectable appeal. If your priority is saving money up front, the 2020 is the better secondary path because it comes in below the 2021’s average price while still delivering the same core performance identity.

These recommendations are based on CarGurus' proprietary market data from September 11, 2026, CarGurus experts' opinions, and generative AI.