Used 2021 Ford Mustang for Sale nearSaint Louis, MO

Compare 2021 Ford Mustang Trims in Saint Louis, MO

The Mustang lineup offers a range of trims from budget-friendly options to powerful V8s, catering to various driving preferences and styles.

• Starting at $16,520
• Best MPG/MPGe: 21 city / 29 hwy
• Most Popular: EcoBoost Premium Convertible RWD

Trim Overview

Prices updated weekly from CarGurus listings.

Quick Compare Table

Listing prices sourced from CarGurus — updated weekly. OEM specs from manufacturer data.

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Trim Deep Dives

EcoBoost Coupe RWD — "Who It's For"

The EcoBoost Coupe is the pick for shoppers who want a sporty experience without the higher price of a V8. It's a great entry point into the Mustang lineup.

• Avg. market price: $31,778 (updated weekly)
• MPG/MPGe: 21 city / 29 hwy
• Inventory: 6 listings — lower availability; may limit negotiating room
• View EcoBoost Coupe RWD listings

GT Coupe RWD — "Who It's For"

The GT Coupe is the pick for shoppers who want robust V8 performance without going for the premium trims. It balances power and features well.

• Avg. market price: $31,778 (updated weekly)
• MPG/MPGe: 15 city / 24 hwy
• Inventory: 11 listings — lower availability; may limit negotiating room
• View GT Coupe RWD listings

EcoBoost Premium Convertible RWD — "Who It's For"

The EcoBoost Premium Convertible is the pick for shoppers who want an affordable convertible experience with modern tech features. It's the most popular trim for good reason.

• Avg. market price: $16,520 (updated weekly)
• MPG/MPGe: 20 city / 27 hwy
• Inventory: 12 listings — lower availability; may limit negotiating room
• View EcoBoost Premium Convertible RWD listings

GT Premium Coupe RWD — "Who It's For"

The GT Premium Coupe is the pick for shoppers who want a blend of luxury and performance without stepping up to a convertible. It offers a well-rounded package.

• Avg. market price: $39,407 (updated weekly)
• MPG/MPGe: 15 city / 24 hwy
• Inventory: 11 listings — lower availability; may limit negotiating room
• View GT Premium Coupe RWD listings

GT Premium Convertible RWD — "Who It's For"

The GT Premium Convertible is the pick for shoppers who want the ultimate Mustang experience with luxury features and open-air driving. It's fully loaded for comfort.

• Avg. market price: $31,778 (updated weekly)
• Inventory: 10 listings — lower availability; may limit negotiating room
• View GT Premium Convertible RWD listings

Trim Recommendations

Most Popular — EcoBoost Premium Convertible RWD

With 12 active listings, the EcoBoost Premium Convertible RWD is the clear volume leader in the lineup.

Browse EcoBoost Premium Convertible RWD listings

Best Budget Option — EcoBoost Premium Convertible RWD

At $16,520 avg market price — below the lineup median of $31,778 — it's the most accessible entry point.

Browse EcoBoost Premium Convertible RWD listings

Best for Fuel Economy — EcoBoost Coupe RWD

The EcoBoost Coupe RWD offers the best fuel efficiency in the lineup at 21/29 MPG.

Browse EcoBoost Coupe RWD listings

These recommendations are based on CarGurus' proprietary market data from November 5, 2026, CarGurus experts' opinions, and generative AI.

How much does the 2021 Ford Mustang cost?

Prices have softened 1.12% compared to this time last year, making it a favorable time to shop this model year.

There are 2,053 listings available, which gives you a solid pool of options to compare.

Is the 2021 Ford Mustang a good car?

Yes — the 2021 Ford Mustang earns a 4.7/5 user rating and an 8.2/10 expert rating. The model scores 9/10 across Performance, Cost effectiveness, and Safety.

Owners consistently praise its performance, styling, and features, and many highlight how exciting and fun it is to drive. The user feedback also points to strong appeal from the GT model and its powerful engine, along with decent fuel economy for a V8. On the downside, some owners feel prices are inflated and question value for money, while a few mention warranty experiences and feature availability concerns.

That lines up with the overview: you get a performance car that blends retro character with modern technology, plus a broad trim lineup that keeps it approachable for shoppers who want affordable driving fun. The trade-offs are clear, though, with poor visibility, a cramped back seat, and limited cargo space.

33.0% of listings are priced as good or great deals, so there are still some attractive opportunities if you shop carefully.

Is the 2021 Ford Mustang reliable?

Owners rate it 4.7/5, a strong signal of long-term satisfaction.

User feedback points to a car that owners enjoy living with over time, with praise centered on performance, looks, and features. The review summary also suggests the Mustang is a car many drivers feel good about keeping, especially when they value excitement and a strong ownership experience.

The expert review reinforces that sense of dependability by describing the Mustang as a car that has evolved and iterated while staying relevant, with modern technology wrapped in a familiar formula. It also notes that Ford has built the lineup to be welcoming for performance enthusiasts, which supports the idea of a car designed to hold up as a long-term enthusiast choice.

For used buyers, the main ownership risk is less about the car’s character and more about finding one that has been maintained well and not overused.

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

At 70% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should start with a vehicle history report and then prioritize a pre-purchase inspection, especially if you’re considering a higher-performance trim or a car with modifications. Focus on condition, maintenance records, and whether the car’s equipment matches what you expect from the trim level you’re shopping. If you want the best odds of a clean, trouble-free purchase, be extra careful with accident history and signs of hard use.

Key things to evaluate:

• Trim level: The base EcoBoost includes 17-inch alloy wheels, manual seats, pushbutton start, power windows and locks, a leather-wrapped shift knob, 4G LTE WiFi, a six-speaker stereo, and the basic Sync system with a 4.2-inch touchscreen and voice control. EcoBoost Premium adds 18-inch wheels, LED fog lights, ambient lighting, dual-zone climate control, heated and cooled front seats, and Sync 3 with Apple CarPlay and Android Auto. GT and GT Premium add V8 power and more upscale equipment, while Mach 1 brings additional performance hardware and a more focused setup.
• Powertrain: The EcoBoost uses a 2.3-liter turbocharged four-cylinder with 310 horsepower and 350 pound-feet of torque, while the GT uses a 5.0-liter V8 with 460 hp and 420 lb-ft. The Mach 1 raises output to 480 hp and keeps rear-wheel drive, with manual and automatic transmission choices depending on trim.
• Safety package: Ford Co-Pilot360 is standard and includes automatic emergency braking, forward-collision warning, pedestrian detection, lane-departure warning, blind-spot monitoring, rain-sensing wipers, and automatic high beams. Adaptive cruise control and parking sensors still cost extra.
• Infotainment: The base car gets a 4.2-inch display, while Sync 3 brings an 8-inch touchscreen with Apple CarPlay and Android Auto. The system is easy to use, but when phone projection is active, there is no home button below the screen.
• Fuel efficiency: The most efficient version returns 21 mpg city, 32 mpg highway, and 25 mpg combined. The V8-powered GT with the automatic returns 19 mpg city, 24 mpg highway, and 19 mpg combined. The Mach 1 is estimated at 15 mpg city, 23 mpg highway, and 18 mpg combined.

Which 2021 Ford Mustang trim should I buy?

The 2021 Ford Mustang is offered in 5 trim levels: EcoBoost, EcoBoost Premium, GT, GT Premium, and Mach 1.

Here's the short version:

• EcoBoost: This is the entry point, and it gives you the Mustang look, the 310-horsepower turbo-four, and standard Co-Pilot360 safety tech without pushing the price too high. It makes the most sense if you want the Mustang experience at the lowest cost.
• EcoBoost Premium: This is the best-value trim for many shoppers because it adds the 8-inch Sync 3 touchscreen, Apple CarPlay and Android Auto, heated and cooled front seats, dual-zone climate control, and other comfort upgrades. If you want the most balanced mix of features and price, this is the one to target.
• GT: Choose this if you want the V8 experience, since it adds the 5.0-liter engine, dual exhaust tips, unique badging, and a more serious performance character. It’s the right pick if power matters more than comfort upgrades.
• GT Premium: This trim layers in the nicer cabin equipment from the Premium side, including leather-trimmed front seats and additional convenience features, while keeping the V8. It suits you if you want the stronger engine and a more upscale interior.
• Mach 1: This is the most focused performance choice, with extra mechanical upgrades, a digital instrument panel, Brembo brakes, MagneRide, and GT350-derived chassis hardware. It’s the trim to buy if you want the sharpest factory Mustang and are willing to pay for it.

Ford Co-Pilot360 is standard, but adaptive cruise control and parking sensors still require extra cost.

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

This is a moderate market for selective buyers, with enough inventory and deal activity to make shopping worthwhile if you compare listings carefully.

• Deal availability: 33.0% of listings are priced as good or great deals.
• Inventory: There are 2,053 listings available.
• Price trend: Prices have softened 1.12% compared with last year.
• Clean inventory: 70.0% of listings are accident-free.

If you find a listing below $28,497, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2021 Ford Mustang's resale value?

The current average of $30,502 sits slightly below last year's $30,848.

That modest decline suggests the market has softened a bit, which can help you as a buyer today but may temper short-term gains if you plan to resell soon. Even so, the drop is not dramatic, so the Mustang still appears to hold value reasonably well relative to its recent pricing history. If you buy well and keep the car in strong condition, you should be in a better position when it’s time to sell.

Vehicles with strong owner satisfaction ratings, like this model year's 4.7/5, tend to retain buyer demand, which supports resale value over time.

Is the 2021 Ford Mustang safe?

The 2021 Ford Mustang earns a 9/10 safety score from our experts.

Ford’s Co-Pilot360 suite is standard, and it includes automatic emergency braking, forward-collision warning, pedestrian detection, lane-departure warning, blind-spot monitoring, rain-sensing wipers, and automatic high beams. That gives you a strong set of driver-assistance features right from the start, though adaptive cruise control and parking sensors still cost extra.

The review also notes that visibility is good for an American sports car, which helps reduce one of the Mustang’s traditional weak spots. If you want the most safety equipment, make sure the specific trim and options you’re considering include the features you want.

Should I buy a 2021 Ford Mustang 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:

• 33.0% of listings are priced as good or great deals.
• At 70% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 1.12% compared with last year.
• Owners rate it 4.7/5 — a strong satisfaction signal.
• Ford added the new Mach 1 trim for 2021, giving this year extra appeal for performance-focused shoppers.

Consider the 2020 if:

• At $25,161, the 2020 costs less than the current year's $30,502 average.
• The 2020 is a nostalgic, value-focused Mustang with broad appeal and strong performance.

The bottom line: If you want the newer model-year appeal, the added Mach 1, and a strong mix of features and safety, the 2021 is the better all-around pick. If your priority is spending less up front, the 2020 is the smarter budget alternative.

How does the 2021 Ford Mustang compare to the 2021 Chevrolet Camaro?

Expert Pros & Cons (per CarGurus review team)

2021 Ford Mustang:

• Pros: Stylish design, Fun to drive, Manual transmission available.
• Cons: Poor visibility, Cramped back seat, Not much cargo space.

2021 Chevrolet Camaro:

• Pros: Stylish design, Fun to drive, Powerful engine.
• Cons: Poor visibility, Underwhelming base engine, Cramped back seat.

Our experts score the 2021 Ford Mustang 8.2/10 and the 2021 Chevrolet Camaro 8/10. The Mustang has the edge if you want a broader trim lineup, a manual transmission option, and a more usable cabin. The Camaro counters with a lower starting MSRP and a powerful engine, but its base engine is less impressive and its cabin remains cramped.

Read our full side-by-side expert comparison here.

These recommendations are based on CarGurus' proprietary market data from November 10, 2026, CarGurus experts' opinions, and generative AI.