Used 2021 Audi Q3 for Sale nearSaint Louis, MO

How much does the 2021 Audi Q3 cost?

Prices have softened 12.20% compared to this time last year, making it a favorable time to shop this model year.

There are 1,080 listings available, which gives you a solid amount of inventory to compare.

Is the 2021 Audi Q3 a good car?

Yes — the 2021 Audi Q3 earns a 4.8/5 user rating and an 8.2/10 expert rating. The model scores 9/10 across Form and function and Safety.

The Q3 is a subcompact luxury SUV that emphasizes a refined ride, useful technology, and standard driver assistance features. It also stands out for impressive technology, an impressive stereo, and great ride quality.

The trade-offs are worth weighing: the back seat is cramped, cargo space is limited, and the interior materials feel cheap. It is also described as poor value for money, so you should expect to prioritize comfort and tech over practicality.

With 39.0% of listings marked as good or great deals, you have some room to shop selectively.

Is the 2021 Audi Q3 reliable?

Owners rate it 4.8/5, a strong signal of long-term satisfaction.

The Q3’s refined ride and standard all-wheel drive setup support a confidence-inspiring ownership experience, and the available tech and driver assistance features add everyday usability. Its performance tuning also helps it feel composed and lively rather than strained in normal driving.

The Q3 can run on regular gasoline, which helps keep day-to-day ownership costs more manageable than some luxury rivals.

For used buyers, the main long-term risk is that the same compromises that affect new-car shoppers still matter here: limited rear-seat space, modest cargo room, and value concerns can make it less satisfying if you need maximum practicality.

What should I look for when buying a used 2021 Audi Q3?

Accident-free inventory is solid at 78.8% — always verify the vehicle history report.

You should start with a vehicle history report, then prioritize a close inspection of the cabin, rear-seat space, and cargo area so you know whether the condition matches your needs. It is also smart to confirm that the technology and driver-assistance features work properly, since those are major parts of the Q3’s appeal.

Key things to evaluate:

• Trim level: The Premium trim includes leather upholstery, 12-way power-adjustable front seats, heated front seats, dual-zone climate control, a panoramic sunroof, an 8.8-inch touchscreen infotainment system, a power liftgate, four USB ports, and several high-tech driver assistance features. The Premium Plus adds remote start, pushbutton start, remote keyless entry, wireless device charging, and a hands-free power liftgate. The Premium Plus is the better value if you want more convenience features without moving into package-heavy territory.
• Powertrain: The Q3 comes with a turbocharged 2.0-liter four-cylinder engine and an eight-speed automatic transmission with Quattro all-wheel drive. The base setup makes 184 horsepower and 221 pound-feet of torque, while the available higher-output version makes 228 hp and 258 lb-ft. The stronger engine feels lively and improves passing, while the base engine can show more turbo lag.
• Safety package: Audi Pre Sense and Pre Sense Front are standard, and Pre Sense Front includes forward-collision warning, automatic emergency braking, and pedestrian detection. Lane-departure warning is standard as well. Optional features include blind-spot monitoring, rear cross-traffic alert, adaptive cruise control, traffic-sign recognition, a 360-degree camera system, front-and-rear parking sensors, and self-parking assist. Some of those features are only available on higher trims or through packages.
• Infotainment: The standard system uses an 8.8-inch touchscreen with Audi MMI, standard Android Auto, and wireless Apple CarPlay. An available 10.1-inch touchscreen adds navigation, and other available tech includes wireless device charging, satellite radio, and a Bang & Olufsen 15-speaker premium audio system. Audi Virtual Cockpit is also available.
• Fuel efficiency: EPA estimates for the Q3 Quattro are 22 mpg city, 30 mpg highway, and 25 mpg combined. The higher-output S-Line Quattro returns 20 mpg city, 28 mpg highway, and 23 mpg combined. The Q3 can run on regular gasoline.

Which 2021 Audi Q3 trim should I buy?

The 2021 Audi Q3 is offered in 2 trim levels: Premium and Premium Plus.

Here's the short version:

• Premium: This is the entry point, but it still gives you leather upholstery, heated front seats, a panoramic sunroof, an 8.8-inch touchscreen, and several standard driver assistance features. If you want the lowest-cost way into the Q3 without giving up the core luxury and tech experience, this is the trim to start with.
• Premium Plus: This is the best-value trim if you want more convenience features, since it adds remote start, pushbutton start, remote keyless entry, wireless device charging, and a hands-free power liftgate. It is the smarter pick if you expect to keep the Q3 for daily use and want a more complete feature set.

The standard safety equipment is strong, and you can add more driver assistance features through available packages.

Is now a good time to buy a used 2021 Audi Q3?

This is a moderate market, so you can shop selectively without expecting every listing to be a bargain.

• Deal availability: 39.0% of listings are priced as good or great deals.
• Inventory: There are 1,080 listings available.
• Price trend: Prices have softened 12.20% compared with last year.
• Clean inventory: 78.8% of listings are accident-free.

If you find a listing below $20,330, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2021 Audi Q3's resale value?

The current average of $20,330 sits slightly below last year's $23,154.

That decline suggests the market has become more favorable for buyers, but it also means a future seller may need to price competitively to stand out. If you buy at the current average or below, you may have a better chance of limiting depreciation pressure later.

The Q3’s strong feature content and solid demand for compact luxury SUVs can help support resale interest, especially if the vehicle is well equipped and in clean condition.

Vehicles with strong owner satisfaction ratings, like this model year's 4.8/5, tend to retain buyer demand, which supports resale value over time.

Is the 2021 Audi Q3 safe?

The 2021 Audi Q3 comes standard with Audi Pre Sense and Pre Sense Front, which includes forward-collision warning, automatic emergency braking, and pedestrian detection. Lane-departure warning is standard as well, and optional features include blind-spot monitoring, rear cross-traffic alert, adaptive cruise control, traffic-sign recognition, a 360-degree camera system, front-and-rear parking sensors, and self-parking assist.

It earns a 9/10 safety score from our experts.

The Q3’s safety setup is strong for the class, especially because key driver-assistance features are standard rather than reserved for higher trims. If you want the most complete safety package, you should look for a vehicle with the available add-on features, since some of the more advanced systems are not standard.

Should I buy a 2021 Audi Q3 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:

• 39.0% of listings are priced as good or great deals.
• Accident-free inventory is solid at 78.8% — always verify the vehicle history report.
• Price trend: Prices have softened 12.20% compared with last year.
• Owners rate it 4.8/5 — a strong satisfaction signal.
• The 2021 model gains additional high-tech safety features and drops the top-tier Prestige trim, with those features moved into options packages.

The bottom line: The 2021 Audi Q3 makes sense if you want a refined small luxury SUV with strong tech, standard driver assistance features, and a softer used-market price than it had a year ago. If you are especially price-sensitive, you can shop carefully for a well-kept example with the features you want, but the 2021 is the better pick when you want the updated feature mix and a more favorable market entry point.

How does the 2021 Audi Q3 compare to the 2021 BMW X1?

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.