Used 2021 Cadillac XT6 for SaleNationwide

How much does the 2021 Cadillac XT6 cost?

Prices have softened 13.17% compared to this time last year, making it a favorable time to shop this model year.

There are 947 listings available, which suggests you have a solid amount of inventory to compare.

Is the 2021 Cadillac XT6 a good car?

The 2021 Cadillac XT6 is a qualified pick if you want a premium three-row SUV that emphasizes refinement, space, and road manners over outright performance. It earns a 3.7/5 user rating and a 7.5/10 expert rating.

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

Its strongest points are a spacious third row, impressive technology, and great handling, which fit well if you want a luxury SUV with a more manageable footprint than a full-size model. The trade-offs are that advanced safety features are not standard and the stereo is lacking, while performance is fairly pedestrian.

There are 34.0% of listings priced as good or great deals, which gives you some room to shop selectively.

Is the 2021 Cadillac XT6 reliable?

The 2021 Cadillac XT6 is presented as a familiar, mostly unchanged model with a refined driving character and a standard feature set that should feel straightforward to live with. Its performance is described as smooth and easygoing, and the available equipment suggests a premium ownership experience.

The V6 is described as powerful enough to get the SUV going with ease, and the nine-speed automatic is said not to struggle to find a gear. The XT6 also includes useful ownership-friendly tech such as remote start, Teen Driver monitoring, and a WiFi hot spot, and the available maintenance package language points to added convenience for scheduled service.

For used buyers, the main long-term risk is that a premium SUV with lots of available equipment can become more expensive to keep in top shape if prior maintenance was inconsistent.

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

At 67.1% 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 pre-purchase inspection, especially if you are considering a higher-trim example with more equipment. Focus on overall condition, signs of prior bodywork, and whether the features you want are actually present on the specific listing.

Key things to evaluate:

• Trim level: The XT6 comes in Luxury, Premium Luxury, and Sport trim levels. The cabin is described as premium overall, but some stitching, buttons, and cubby design look cheaper, and the Sport model adds darker exterior accents and unique wheels. A sunroof is standard.
• Powertrain: The base Luxury model gets 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 smooth and strong enough for easy acceleration, but the XT6 is still described as fairly pedestrian to drive.
• Safety package: 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. The Driver Assist Package adds adaptive cruise control, automatic seat belt tightening, enhanced automatic emergency braking, and reverse automatic braking.
• Infotainment: The XT6 uses an 8.0-inch touchscreen, wireless Apple CarPlay and Android Auto, infotainment user profiles, an eight-speaker Bose audio system, satellite radio, a WiFi hot spot, and six USB ports. Buyers can upgrade to navigation, a 14-speaker Bose system, and upgraded wireless charging.
• Fuel efficiency: The base turbo-four is rated at 21 mpg in the city, 26 mpg on the highway, and 23 mpg combined with AWD, while the V6 with FWD returns 19 mpg in the city, 26 mpg on the highway, and 21 mpg combined. AWD lowers the V6’s 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 entry point, and it gives you the XT6’s core three-row space, standard sunroof, and the full base safety and tech setup. It makes sense if you want the XT6’s size and premium feel without paying for extras you may not need.
• Premium Luxury: This is the best-value trim if you want the strongest balance of comfort and equipment. It adds the V6, available AWD, and standard blind-spot monitoring and rear cross-traffic alert, making it the most rounded choice for many shoppers.
• Sport: This trim leans into the XT6’s sharper styling and comes only with AWD. It also includes the same added safety features as Premium Luxury, but it makes the most sense if you specifically want the darker exterior treatment and unique appearance.

Premium Luxury and Sport both add 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?

The current market looks selective rather than overheated, so you can shop with some leverage if you are patient and compare listings carefully.

• Deal availability: 34.0% of listings are priced as good or great deals.
• Inventory: There are 947 listings available.
• Price trend: Prices have softened 13.17% compared with last year.
• Clean inventory: 67.1% of listings are accident-free.

If you find a listing below $25,476, 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 $25,476 sits slightly below last year's $29,342.

That decline suggests the XT6 has softened in the used market, which can help you buy at a more favorable entry point. If you plan to sell later, you should expect resale value to depend heavily on condition, mileage, and whether the vehicle has a clean history. Well-kept examples with desirable equipment should hold up better than higher-mileage listings with prior damage.

Is the 2021 Cadillac XT6 safe?

The 2021 XT6 earns a five-star frontal crash test rating and a four-star rollover crash test rating 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 models 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, even in good conditions.

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:

• 34.0% of listings are priced as good or great deals.
• At 67.1% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 13.17% compared with last year.
• It keeps the XT6’s familiar formula with strong space, technology, and handling.

Consider the 2020 if:

• At $23,889, the 2020 costs less than the current year's $25,476 average.
• It offers stylish design and easy-to-use technology.

Consider the 2022 if:

• At $28,327, the 2022 costs more than the current year's $25,476 average.
• It adds great ride quality and stronger safety ratings.

The bottom line: If you want the best balance of price and current-market availability, the 2021 is the sensible middle ground. If you are especially price-sensitive, the 2020 is the cheaper path; if you want a newer-feeling alternative with stronger ride and safety appeal, the 2022 is worth stretching for.

How does the 2021 Cadillac XT6 compare to the 2021 Buick Enclave?

Expert Pros & Cons (per CarGurus review team)

2021 Cadillac XT6:

• Pros: Spacious third row, Impressive technology, Great handling.
• Cons: Advanced safety features are not standard, Stereo is lacking, Fairly pedestrian performance.

2021 Buick Enclave:

• Pros: Comfortable, Spacious, Easy-to-use technology.
• Cons: Interior materials feel cheap, Poor value for money, Outdated technology.

Our experts score the 2021 Cadillac XT6 7.5/10 and the 2021 Buick Enclave 6.3/10. The XT6 is the better choice if you care more about handling and technology, while the Enclave leans into comfort and space. The XT6’s weaker standard safety content and modest performance keep it from feeling fully premium, but it still comes across as the more compelling overall package.

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.