Used 2021 GMC Yukon for Sale nearHagerstown, MD

How much does the 2021 GMC Yukon cost?

Prices have softened 14.67% compared to this time last year, making it a favorable time to shop this model year.

There are 2,330 listings available, which gives you a meaningful pool to compare prices and equipment.

Is the 2021 GMC Yukon a good car?

Yes — the 2021 GMC Yukon earns a 5/5 user rating and a 7.67/10 expert rating. The model scores 9/10 across Look and feel, Technology, and Safety.

Owners consistently praise the luxurious feel, spacious interior, and impressive tech features. The ride is described as extremely comfortable, and the Yukon stands out for buyers who want a large SUV with a more refined, capable feel.

The main trade-offs are poor fuel economy, uncomfortable seats, and interior materials that can feel cheap. For you, that means the Yukon makes the most sense if space, comfort, and tech matter more than efficiency or a truly upscale cabin finish.

The market also looks reasonably supportive, with 34.4% of listings marked as good or great deals.

Is the 2021 GMC Yukon reliable?

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

The owner feedback points to a dependable, trouble-free ownership experience, with praise centered on the Yukon’s luxurious feel, spacious interior, and tech that owners enjoy living with over time. The expert review also emphasizes that the redesigned Yukon is more cost-effective than before because it delivers significantly more passenger comfort and cargo room.

The powertrain and chassis changes are framed as improvements in ride quality and handling, which supports confidence in day-to-day use. For used buyers, the main long-term risk is that a large, feature-rich SUV can become expensive to live with if prior maintenance or condition has been neglected.

What should I look for when buying a used 2021 GMC Yukon?

Accident-free inventory is solid at 77.9% — always verify the vehicle history report.

You should still run a history report on any Yukon you’re considering, even if the listing looks clean. Prioritize a pre-purchase inspection that checks the suspension, brakes, electronics, and interior condition, since this is a large SUV with a lot of equipment to evaluate. Pay close attention to seat comfort, cabin wear, and whether the tech features work as expected.

Key things to evaluate:

• Trim level: The SLE, SLT, AT4, and Denali each bring a different mix of appearance, comfort, and equipment. The Denali stands apart with its exclusive dashboard design, real wood trim, leather-wrapped panels, unique stitching and piping, and the Ultimate Package’s panoramic sunroof, while the AT4 adds off-road-focused hardware such as improved approach angle, skid plates, and all-terrain tires. The SLT is the first trim to add blind-spot warning, rear cross-traffic warning, lane-departure warning, and lane-keeping assistance, so base-trim shoppers should check which driver aids are missing.
• Powertrain: You get a standard 355-horsepower 5.3-liter V8 on all but the Denali, while the Denali uses a 420-horsepower 6.2-liter V8. A 3.0-liter turbo-diesel inline six-cylinder is also mentioned as an option for most trims. The 6.2-liter delivers strong acceleration, but fuel economy is not its strength.
• Safety package: Standard safety equipment includes forward collision warning, daytime pedestrian detection, automatic emergency braking below 50 mph, automatic high-beam headlights, Teen Driver, a rear-seat reminder, and automatic crash response and crisis assistance through OnStar. Starting with SLT, you also get blind-spot warning, rear cross-traffic warning, lane-departure warning, and lane-keeping assistance. Rear pedestrian alert is available on SLT and AT4 and standard on Denali, while adaptive cruise control and enhanced automatic emergency braking are reserved for Denali.
• Infotainment: Every 2021 Yukon gets a 10.2-inch touchscreen with wireless Apple CarPlay, wireless Android Auto, Amazon Alexa integration, access to a 4G LTE WiFi hotspot, GMC Connected Services, and over-the-air updates. Available upgrades include wireless device charging, navigation, a 14-speaker Bose Performance Series audio system, and rear-seat media with dual 12.6-inch displays.
• Fuel efficiency: The 6.2-liter V8 with 4WD is EPA-rated at 14 mpg city, 19 highway, and 16 combined. In testing, it returned 14.4 mpg on one loop and 16.2 mpg on another. The expert review also notes that fuel economy can worsen versus the previous generation.

Which 2021 GMC Yukon trim should I buy?

The 2021 GMC Yukon is offered in 4 trim levels: SLE, SLT, AT4, and Denali.

Here's the short version:

• SLE: This is the entry point, so it makes the most sense if you want the Yukon’s space and core tech without paying for the higher-end luxury and driver-assistance upgrades. It still gets the standard 10.2-inch touchscreen, wireless smartphone integration, and the core safety suite.
• SLT: This is the best-value trim for many shoppers because it adds a meaningful safety step up with blind-spot warning, rear cross-traffic warning, lane-departure warning, and lane-keeping assistance. If you want a more complete family SUV without jumping all the way to Denali pricing, this is the trim to focus on.
• AT4: Choose this if you want the more rugged character and the off-road-oriented hardware, including improved approach angle, skid plates, and all-terrain tires. It’s the trim for buyers who want the Yukon’s size and capability with a more adventurous setup.
• Denali: This is the luxury pick, with the exclusive dashboard design, real wood trim, leather-wrapped panels, unique stitching and piping, and the available Ultimate Package. It also gets adaptive cruise control, enhanced automatic emergency braking, and rear pedestrian alert standard.

For safety, the SLT is the first trim to unlock several important driver-assistance features, while Denali adds the most complete package.

Is now a good time to buy a used 2021 GMC Yukon?

This looks like a moderate, selective buyer’s market, so you have room to shop carefully.

• Deal availability: 34.4% of listings are priced as good or great deals.
• Inventory: There are 2,330 listings available.
• Price trend: Prices have softened 14.67% compared with last year.
• Clean inventory: 77.9% of listings are accident-free.

If you find a listing below $42,159, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2021 GMC Yukon's resale value?

The current average of $42,159 sits slightly below last year's $49,404.

That price movement suggests the Yukon has already absorbed a meaningful amount of depreciation, which can help future sellers if the market stabilizes. If you buy at the current average or below, you may have less downside left than someone who bought closer to last year’s higher pricing.

Strong demand for roomy, well-liked SUVs can help support resale, especially when the vehicle has a good reputation with owners. Vehicles with strong owner satisfaction ratings, like this model year's 5/5, tend to retain buyer demand, which supports resale value over time.

Is the 2021 GMC Yukon safe?

The 2021 GMC Yukon earns a 9/10 safety score from our experts.

It comes with a broad standard ADAS suite that includes forward collision warning, daytime pedestrian detection, automatic emergency braking below 50 mph, automatic high-beam headlights, Teen Driver, a rear-seat reminder, and automatic crash response and crisis assistance through OnStar. Starting with SLT, you also get blind-spot warning, rear cross-traffic warning, lane-departure warning, and lane-keeping assistance, while Denali adds rear pedestrian alert standard plus adaptive cruise control and enhanced automatic emergency braking.

Crash-test ratings were unavailable in the review text, so there’s no test-score lead to add here. The main safety caveat is that some of the more advanced driver aids are trim-dependent, so you’ll want to confirm exactly which systems are included on the used example you’re considering.

Should I buy a 2021 GMC Yukon 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:

• 34.4% of listings are priced as good or great deals.
• Accident-free inventory is solid at 77.9% — always verify the vehicle history report.
• Price trend: Prices have softened 14.67% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.
• The redesign brings more passenger space, more cargo space, and a significant technology upgrade.

Consider the 2022 if:

• At $47,164, the 2022 costs more than the current year's $42,159 average.
• It adds a standard 12-inch driver information center and enhanced connectivity.

The bottom line: If you want the better value, the 2021 is the stronger starting point because it combines a lower average price with a major redesign and strong owner satisfaction. If you’re willing to pay more for a newer model-year update and enhanced connectivity, the 2022 is the cleaner upgrade path.

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