Used 2021 Mazda CX-9 for Sale nearDenver, CO

How much does the 2021 Mazda CX-9 cost?

Prices have softened 8.49% compared to this time last year, making it a favorable time to shop this model year.

There are 556 listings available, which gives you a decent amount of inventory to compare.

Is the 2021 Mazda CX-9 a good car?

Yes — it earns a 4.54/5 user rating and a 7.00/10 expert rating. The standout strength is Safety at 9/10.

Owners consistently praise its smooth handling, reliability, and luxurious interior. The overview also points to a stylish design and a spacious cabin, which helps explain why it appeals to you if you want a premium-feeling midsize SUV.

The trade-offs are clear: the third row is cramped, and the technology is outdated and unintuitive. The expert review also notes that the CX-9 can feel short on power at higher revs and that cargo space is limited for the class.

If you value comfort, style, and a refined driving experience more than maximum practicality, this model year fits that use case well. 33.8% of listings are priced as good or great deals, so there are still worthwhile opportunities in the market.

Is the 2021 Mazda CX-9 reliable?

Owners rate it 4.54/5, a strong signal of long-term satisfaction.

User feedback repeatedly points to reliability and a trouble-free ownership experience, alongside praise for comfort and the kind of durability you want in a family SUV. The expert review also describes the CX-9 as a beneficiary of Mazda’s continual refinement, with a smooth, well-sorted driving character that supports confidence over time.

Mazda also includes a three-year trial of connected services, which adds some ownership convenience. For used buyers, the main long-term risk is less about mechanical drama and more about living with the CX-9’s aging technology and space limitations.

What should I look for when buying a used 2021 Mazda CX-9?

At 71.8% 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 careful inspection of body panels, paint consistency, and any signs of prior repair. Because this model’s appeal depends heavily on its premium feel, you should also pay close attention to interior condition, electronics behavior, and whether the cabin shows wear that undercuts the upscale presentation.

Key things to evaluate:

• Trim level: Sport and Touring sit below the Carbon Edition, while Grand Touring and Signature add more standard features. The base trims use 18-inch wheels, and the higher trims bring more upscale equipment and a more premium look.
• Powertrain: Every version uses a 2.5-liter turbocharged four-cylinder engine with a six-speed automatic transmission. Front-wheel drive is standard on most trims, while all-wheel drive comes standard on Signature.
• Safety package: Standard equipment includes blind-spot monitoring, rear cross-traffic alert, adaptive cruise control with stop-and-go, rain-sensing wipers, and other driver-assist tech. Carbon Edition adds adaptive front lighting, a windshield wiper de-icer, a driver-attention monitor, front and rear parking sensors, and reverse automatic emergency braking; Grand Touring adds a surround-view camera system.
• Infotainment: You get a 10.25-inch static display with Mazda Connect, plus Apple CarPlay and Android Auto, text messaging support, Pandora integration, and automatic emergency notification. The system still lacks a touchscreen.
• Fuel efficiency: The CX-9 Signature is rated at 23 mpg combined, and the review notes that real-world results can fall short of that figure.

Which 2021 Mazda CX-9 trim should I buy?

The 2021 Mazda CX-9 is offered in 5 trim levels: Sport, Touring, Carbon Edition, Grand Touring, Signature.

Here's the short version:

• Sport: This is the entry point, and it gives you the core CX-9 experience without the extra luxury touches. It makes sense if you want the lowest-cost way into the model, but it is the trim most likely to feel stripped compared with the richer upper versions.
• Touring: This is the better everyday pick if you want a more balanced mix of equipment and value. It keeps the CX-9’s premium driving feel while avoiding the price jump of the more upscale trims.
• Carbon Edition: This is the standout value play if you want the biggest visual and feature upgrade without going all the way to the top. It adds a custom look, second-row captain’s chairs, a Bose audio system, a wireless phone charger, a head-up display, and extra safety tech.
• Grand Touring: This is the trim to consider if you want a more luxury-leaning setup and the surround-view camera system. It builds on the Carbon Edition’s upscale direction and adds more convenience and visibility tech.
• Signature: This is the most premium version, with the richest materials and the most upscale cabin presentation. It suits you best if you want the flagship feel and standard all-wheel drive.

The Carbon Edition is the best-value trim for many shoppers because it adds meaningful style, comfort, and safety upgrades without pushing into flagship pricing. Safety content also notes that the Carbon Edition is the next big step up in safety technology, while Grand Touring adds the surround-view camera system.

Is now a good time to buy a used 2021 Mazda CX-9?

This looks like a moderate, selective buyer’s market, so you can shop carefully and still find worthwhile deals.

• Deal availability: 33.8% of listings are priced as good or great deals.
• Inventory: There are 556 listings available.
• Price trend: Prices have softened 8.49% compared with last year.
• Clean inventory: 71.8% of listings are accident-free.

If you find a listing below $22,258, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2021 Mazda CX-9's resale value?

The current average of $22,346 sits slightly below last year's $24,419.

That decline suggests the market has already adjusted downward, which can help you as a buyer but may limit upside if you plan to resell soon. If you buy at the right price, you reduce the risk of taking a bigger depreciation hit later.

The CX-9’s premium-feeling cabin and strong owner satisfaction can help support demand when it’s time to sell. A well-kept example with clean history and desirable equipment should be easier to move than one with visible wear or accident history.

Vehicles with strong owner satisfaction ratings, like this model year's 4.54/5, tend to retain buyer demand, which supports resale value over time.

Is the 2021 Mazda CX-9 safe?

The 2021 Mazda CX-9 earns a Top Safety Pick+ from IIHS and a five-star overall rating from NHTSA, with four-star frontal-impact ratings for the driver and front passenger.

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

Standard safety equipment includes blind-spot monitoring, rear cross-traffic alert, adaptive cruise control with stop-and-go, rain-sensing wipers, and other driver-assist features. The Carbon Edition adds adaptive front lighting, a windshield wiper de-icer, a driver-attention monitor, front and rear parking sensors, and reverse automatic emergency braking, while Grand Touring adds a surround-view camera system.

One caveat is that lane-centering assistance is unavailable, and the adaptive cruise system can struggle to maintain a smooth following distance at higher speeds. Even so, the CX-9’s safety package is a major strength, especially if you prioritize active safety tech.

Should I buy a 2021 Mazda CX-9 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:

• 33.8% of listings are priced as good or great deals.
• At 71.8% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 8.49% compared with last year.
• Owners rate it 4.54/5 — a strong satisfaction signal.
• The 2021 update brings a better infotainment system, new safety features, and a more upscale Carbon Edition.

Consider the 2022 if:

• At $24,343, the 2022 costs more than the current year's $22,346 average.
• It adds standard all-wheel drive and a broader trim lineup.

The bottom line: If you want the better value, the 2021 is the smarter buy because it combines a lower average price with strong owner satisfaction and meaningful feature updates. If you’re willing to spend more for a newer model year and standard AWD, the 2022 is the cleaner alternative.

These recommendations are based on CarGurus' proprietary market data from September 15, 2026, CarGurus experts' opinions, and generative AI.