Used 2021 Mazda CX-9 for Sale nearBoise, ID

How much does the 2021 Mazda CX-9 cost?

Prices have softened 8.08% compared to this time last year, making it a favorable time to shop this model year.

There are 566 listings available, which gives you a decent amount of inventory to compare before you buy.

Is the 2021 Mazda CX-9 a good car?

Yes — the 2021 Mazda CX-9 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 CX-9 also fits buyers who want a stylish, premium-feeling midsize SUV with a comfortable ride and upscale materials.

The trade-offs are clear: the third row is cramped, and the technology is outdated and unintuitive. Even so, it remains a strong fit if you value refinement and comfort more than maximum space or the latest interface.

Good and great deals account for 33.6% of listings, which suggests there are still some attractive opportunities in the market.

Is the 2021 Mazda CX-9 reliable?

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

The owner feedback points to a dependable, trouble-free ownership experience, with repeated praise for reliability and comfort. That kind of response matters if you want a used SUV you can count on over the long term.

The expert review also describes the CX-9 as a bargain for its quality and equipment, which supports the idea that it delivers solid substance for the money. Mazda also includes a free three-year trial period for connected services, which adds some ownership value early on.

For used buyers, the main long-term risk is less about mechanical drama and more about living with the CX-9’s space and technology compromises over time.

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

At 71.4% 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 bodywork, safety systems, and interior condition. Because the CX-9 is a premium-feeling family SUV, you’ll want to make sure the cabin, electronics, and driver-assistance features all work as intended.

Pay extra attention to whether the listing’s equipment matches the trim level, since some of the most useful safety and convenience features are reserved for higher trims.

Key things to evaluate:

• Trim level: Sport and Touring are the lower trims, while Carbon Edition adds a custom look with Polymetal Gray paint, cranberry red leather upholstery, second-row captain’s chairs, and dark-finish 20-inch wheels. Grand Touring and Signature add more standard features, and Signature brings the most upscale cabin treatment.
• Powertrain: Every CX-9 uses a 2.5-liter turbocharged four-cylinder engine with a six-speed automatic transmission. Front-wheel drive is standard on most trims, while Signature includes all-wheel drive as standard.
• Safety package: Blind-spot monitoring, rear cross-traffic alert, and adaptive cruise control with stop-and-go are standard. 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: The CX-9 uses a 10.25-inch static display with Mazda Connect, Apple CarPlay, Android Auto, wireless phone charging on Carbon Edition, and a three-year trial for connected services. The system is improved, but it still lacks a touchscreen.
• Fuel efficiency: The EPA says the CX-9 Signature should return 23 mpg combined, though the review’s real-world testing came in lower at 20.1 mpg.

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 with the standard turbocharged engine, Mazda Connect, Apple CarPlay, Android Auto, and key driver-assistance features. It makes sense if you want the CX-9’s style and driving feel at the lowest price.
• Touring: This trim builds on the base model with a more complete equipment mix, making it a sensible step up if you want a better balance of comfort and value without chasing luxury extras.
• Carbon Edition: This is the best-value pick if you want the most distinctive look and a meaningful equipment upgrade. It adds the custom styling, second-row captain’s chairs, more safety tech, satellite radio, a Bose audio system, a wireless charger, and a head-up display.
• Grand Touring: Choose this if you want a more upscale feel and the surround-view camera system. It’s the right middle ground if you care about convenience and visibility features.
• Signature: This is the most luxurious version, with premium Nappa leather, Santos Rosewood inlays, real aluminum accents, and standard all-wheel drive. It suits you best if you want the most premium CX-9 experience.

The Carbon Edition is the standout value, while Grand Touring and Signature are the trims that most clearly add safety and luxury content.

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 listings.

• Deal availability: 33.6% of listings are priced as good or great deals.
• Inventory: There are 566 listings available.
• Price trend: Prices have softened 8.08% compared with last year.
• Clean inventory: 71.4% of listings are accident-free.

If you find a listing below $22,257, 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 $22,372 sits slightly below last year's $24,339.

That decline suggests the CX-9 has become more affordable for buyers, which can make it harder for future sellers to command top dollar immediately. At the same time, the softer pricing may help keep demand steady among shoppers looking for a premium-feeling SUV at a lower entry point.

Because the model still has strong appeal on style, comfort, and value, it should remain reasonably marketable if you keep it in good condition. 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+ rating from IIHS and five-star ratings from NHTSA overall, though it also posts four-star frontal-impact results for the driver and front passenger.

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

Blind-spot monitoring and rear cross-traffic alert are standard, along with adaptive cruise control with stop-and-go capability and rain-sensing wipers. Mazda also includes a driver monitoring system and automatic reverse braking on higher trims, while Grand Touring adds a surround-view camera system.

One important caveat is that lane-centering assistance is unavailable. The safety tech is broad and useful, but it still leaves some gaps compared with the most advanced systems in the class.

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:

• 33.6% of listings are priced as good or great deals.
• At 71.4% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 8.08% compared with last year.
• Owners rate it 4.54/5 — a strong satisfaction signal.
• The 2021 update brings a new infotainment system, added safety tech, and a more upscale Carbon Edition.

Consider the 2022 if:

• At $24,232, the 2022 costs more than the current year's $22,372 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 prices have eased and the model year brings meaningful 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 22, 2026, CarGurus experts' opinions, and generative AI.