Used 2021 Cadillac XT6 for Sale nearNashville, TN

How much does the 2021 Cadillac XT6 cost?

Prices have softened 13.71% compared to this time last year, making it a favorable time to shop this model year.

There are 899 listings available, which gives you a solid amount of inventory to compare.

Is the 2021 Cadillac XT6 a good car?

The 2021 Cadillac XT6 is a mixed but appealing choice if you want a three-row luxury SUV with refinement and family-friendly space. It earns 3.67/5 from users and 7.5/10 from experts.

The model scores 8/10 across Look and feel, Form and function, Technology, and Safety.

Its strengths are clear: it brings a polished crossover-style alternative to the larger Escalade, with a spacious third row, impressive technology, and handling that stands out for the class. The trade-offs are just as clear: performance is fairly pedestrian, the stereo is lacking, and advanced safety features are not standard.

If you want a premium SUV that prioritizes comfort, space, and a refined feel over excitement, it fits that brief well. 34.8% of listings are priced as good or great deals, so there are still some attractive opportunities in the market.

Is the 2021 Cadillac XT6 reliable?

The 2021 Cadillac XT6 is positioned as a refined three-row luxury SUV, but its ownership story still depends on how carefully you shop. The expert test drive data describes the powertrain as smooth and strong enough for easy acceleration, and the nine-speed automatic does not struggle to find a gear.

That said, the XT6’s overall package is not especially low-risk for long-term ownership if you buy a neglected example. You should pay close attention to maintenance history, electronics, and the condition of any added equipment before committing.

What should I look for when buying a used 2021 Cadillac XT6?

At 72% 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 the listing has any accident or repair history. Focus on how the SUV drives, whether the driver-assistance systems behave correctly, and whether the cabin electronics and added packages work as expected.

Key things to evaluate:

• Trim level: The Luxury trim is the most affordable entry point, but it misses the standard blind-spot monitoring and rear cross-traffic alert that come on Premium Luxury and Sport. The Sport trim adds a more aggressive appearance and AWD-only availability, while the Premium Luxury sits between them with a more upscale feature mix.
• Powertrain: The base Luxury uses a 2.0-liter turbo-four, while Premium Luxury and Sport use a 3.6-liter V6 with a nine-speed automatic. The V6 is described as smooth and strong enough to get the SUV moving with ease, while the turbo-four is the efficiency-oriented choice.
• Safety package: All models include automatic emergency braking, forward-collision alert, lane-keep assist with lane-departure warning, a high-definition rearview camera, Safety Alert Seat, IntelliBeam headlights, and rear park assist. Premium Luxury and Sport also add lane change alert with blind-spot monitoring and rear cross-traffic alert as standard.
• Infotainment: The XT6 uses an 8.0-inch touchscreen, wireless Apple CarPlay and Android Auto, infotainment user profiles, a WiFi hot spot, six USB ports, and an eight-speaker Bose audio system. The screen is smaller than some rivals’ and can feel crowded.
• Fuel efficiency: The turbo-four is rated at 21 mpg city, 26 mpg highway, and 23 mpg combined with AWD, or 27 mpg highway with FWD. The V6 returns 19 mpg city, 26 mpg highway, and 21 mpg combined with FWD, while AWD lowers city and highway figures by one mpg each.

Which 2021 Cadillac XT6 trim should I buy?

The 2021 Cadillac XT6 is offered in 3 trim levels: Luxury, Premium Luxury, and Sport.

Here's the short version:

• Luxury: This is the value entry point if you want the XT6’s space, refinement, and standard tech without paying for the higher trims. It gives you the core three-row luxury experience, but you give up the extra standard safety content that comes on the upper trims.
• Premium Luxury: This is the best-value trim for most shoppers because it adds the V6 and standard blind-spot monitoring and rear cross-traffic alert while staying below the Sport’s price. It suits you if you want a more complete luxury setup without chasing the highest sticker.
• Sport: This is the choice if you want the most aggressive styling and standard AWD, along with the V6. It makes sense if appearance and all-weather traction matter more to you than keeping the purchase price down.

Premium Luxury and Sport include lane change alert with blind-spot monitoring and rear cross-traffic alert as standard.

Is now a good time to buy a used 2021 Cadillac XT6?

This is a moderate market for selective buyers, with enough inventory and pricing movement to reward careful shopping.

• Deal availability: 34.8% of listings are priced as good or great deals.
• Inventory: There are 899 listings available.
• Price trend: Prices have softened 13.71% compared with last year.
• Clean inventory: 72.0% of listings are accident-free.

If you find a listing below $26,476, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2021 Cadillac XT6's resale value?

The current average of $26,476 sits slightly below last year's $30,685.

That drop suggests the XT6 has moved into a softer pricing environment, which can help you as a buyer today. For a future seller, it means you should expect resale value to depend heavily on condition, mileage, and equipment rather than assuming the market will hold firm.

If you keep the SUV well maintained and avoid examples with accident history, you’ll be in a better position when it’s time to sell. Higher-trim examples with desirable equipment may also be easier to market than a bare-bones version.

Is the 2021 Cadillac XT6 safe?

The 2021 Cadillac XT6 earns five-star ratings in frontal crash testing and four-star ratings in rollover testing from NHTSA.

It earns an 8/10 safety score from our experts.

All XT6 models come with automatic emergency braking, forward-collision alert, following-distance indicator, lane-keep assist with lane-departure warning, a high-definition rearview camera, Safety Alert Seat, IntelliBeam headlights, and rear park assist. Premium Luxury and Sport also add lane change alert with blind-spot monitoring and rear cross-traffic alert as standard.

One caveat is that the lane-keep assist and lane-departure warning systems are described as struggling to read lane lines reliably, especially at night. If safety tech matters to you, make sure you test those systems carefully on your own drive.

Should I buy a 2021 Cadillac XT6 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:

• 34.8% of listings are priced as good or great deals.
• At 72% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 13.71% compared with last year.
• It keeps the XT6’s refined three-row layout with strong handling and impressive technology.

Consider the 2020 if:

• At $24,670, the 2020 costs less than the current year's $26,476 average.
• It offers a more accessible, style-focused three-row luxury SUV.

Consider the 2022 if:

• At $29,664, the 2022 costs more than the current year's $26,476 average.
• It adds a more balanced, better-rounded take on the XT6 with stronger ride quality.

The bottom line: If you want the best mix of price and current-market availability, the 2021 is the sensible middle ground. If you’re especially price-sensitive, the 2020 is the cheaper path; if you want to spend more for a newer-feeling alternative, the 2022 is worth a look.

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