Used 2021 BMW M3 for Sale nearStamford, CT

How much does the 2021 BMW M3 cost?

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

There are 106 listings available, which gives you a modest amount of inventory to compare before you buy.

If you find a listing below $67,261.15, that's toward the low end of the year-round range and worth acting on quickly.

Is the 2021 BMW M3 a good car?

It is a strong choice if you want a luxury performance sedan that can be calm in daily driving and ferocious when pushed, though it asks you to accept some real compromises. It earns a 3.67/5 user rating and a 6.67/10 expert rating.

The standout strength is Performance at 10/10.

The M3’s appeal comes from its dual nature: it aims to be usable and exciting at the same time, and the driving experience is described as highly engaging. The engine is powerful, a manual transmission is available, and it is fun to drive, but the ride quality is poor, fuel economy is poor, and cargo space is limited.

That makes it a better fit if you care more about driving involvement than comfort or practicality. With 33.0% of listings marked as good or great deals, you have some room to shop selectively.

Is the 2021 BMW M3 reliable?

The 2021 BMW M3 is built around serious performance hardware, and the expert notes emphasize that it is engineered to maximize engine, oil, turbocharger, and brake cooling. The driving impression is of a car that rewards smooth, measured inputs and delivers a highly capable, confidence-inspiring experience when driven with respect.

Its performance content also points to a car that is designed for hard use, with cooling-focused engineering and a performance exhaust system that can be adjusted for louder or quieter operation. BMW’s cost-effectiveness notes also make clear that this is a car whose capabilities go beyond what most drivers will use on public roads.

For used buyers, the long-term ownership risk is that a high-strung performance sedan can become expensive if it has been driven hard, neglected, or modified.

What should I look for when buying a used 2021 BMW M3?

At 74.5% 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 on cars that have been modified or driven aggressively. Focus on overall condition, signs of track use, and whether the car’s maintenance has kept up with its performance-oriented hardware.

Key things to evaluate:

• Trim level: The base car emphasizes the manual transmission and a more traditional enthusiast setup, while the Competition version adds more power and an automatic transmission. The base car’s feature set is simpler, so you should compare equipment carefully if you want the more complete performance package.
• Powertrain: The standard car uses a twin-turbocharged 3.0-liter inline six with 473 horsepower and 406 pound-feet of torque, while the Competition version raises output to 503 hp and 479 lb-ft. The standard car uses a six-speed manual, and the Competition uses an eight-speed automatic.
• Safety package: The standard driver-aid set includes forward-collision warning, automatic emergency braking, lane-departure warning, lane-keeping assistance, blind-spot warning, rear cross-traffic warning, drowsy driver monitoring, post-crash braking, and BMW Assist eCall with SOS and automatic collision notification. The Driving Assistance Professional Package adds adaptive cruise control with stop-and-go, extended traffic jam assistance, lane-centering assistance, evasive steering assistance, and emergency stop assistance, but it is only available on the Competition.
• Infotainment: BMW’s iDrive 7.0 system uses a touchscreen and voice recognition, and it includes Apple CarPlay and Android Auto. The system is quick to respond, and the voice controls work especially well.
• Fuel efficiency: Fuel economy drops by 7 mpg to 19 mpg in combined driving.

Which 2021 BMW M3 trim should I buy?

The 2021 BMW M3 is offered in 2 trim levels: M3 and M3 Competition.

Here's the short version:

• M3: This is the one to choose if you want the more traditional enthusiast setup, including the six-speed manual transmission and the standard rear-wheel-drive character. It suits you best if you value driver involvement over outright convenience.
• M3 Competition: This is the better-value choice if you want the quickest version and prefer the automatic transmission. It adds more power, sharper acceleration, and the easier day-to-day usability of the eight-speed automatic.

The safety package note to keep in mind is that the Driving Assistance Professional Package is only available on the Competition.

Is now a good time to buy a used 2021 BMW M3?

This is a moderate, selective-buyer market, so you should shop carefully and compare condition as much as price.

• Deal availability: 33.0% of listings are priced as good or great deals.
• Inventory: There are 106 listings available.
• Price trend: Prices have held steady compared with last year.
• Clean inventory: 74.5% of listings are accident-free.

If you find a listing below $67,261.15, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2021 BMW M3's resale value?

The current average of $70,421 sits slightly above last year's $70,210.

That small increase suggests the market has been stable rather than volatile, which is helpful if you plan to resell later. It also means you are not buying into a sharply depreciating moment, but you should still expect performance-car ownership costs to matter when it comes time to sell.

Because this model year has held its value fairly steadily, a well-kept example should remain easier to move than one with visible wear, accident history, or heavy modifications. If you buy carefully and maintain it well, you improve your odds of getting a stronger resale result.

Is the 2021 BMW M3 safe?

BMW equips the M3 with a primary collection of driver aids that include forward-collision warning, automatic emergency braking, lane-departure warning, lane-keeping assistance, a blind-spot warning system, and rear cross-traffic warning. It also includes a drowsy driver monitoring system, a post-crash braking system, and BMW Assist eCall with an SOS button and automatic collision notification.

The available Driving Assistance Professional Package adds adaptive cruise control with stop-and-go capability, extended traffic jam assistance for limited-access highways, lane-centering assistance, evasive steering assistance, and emergency stop assistance. That package is only available on the Competition, so the more advanced highway-assistance features are not part of every build.

It earns a 7/10 safety score from our experts.

Should I buy a 2021 BMW M3 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 74.5% 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.
• The 2021 stands out for its dual personality: it can feel calm in everyday driving and ferocious when pushed.

The bottom line: If you want the sharpest version of this generation’s M3 experience and you are comfortable shopping carefully for condition, the 2021 is a compelling pick. If you are more price-sensitive, focus on the best-maintained example you can find rather than chasing the newest or most heavily optioned car.

These recommendations are based on CarGurus' proprietary market data from September 4, 2026, CarGurus experts' opinions, and generative AI.