Used 2021 GMC Yukon for Sale near Ontario

How much does the 2021 GMC Yukon cost?

Prices have softened 18.32% compared to this time last year, making it a favourable time to shop this model year.

There are 87 listings available, which gives you a solid amount of inventory to compare.

Is the 2021 GMC Yukon a good car?

Yes — it earns a 5/5 user rating and a 7.7/10 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 many owners say it stands out in its class. That lines up well with the Yukon’s focus on more passenger space, more cargo space, and a more refined full-size SUV experience.

For you, that means the Yukon makes the most sense if you want a roomy, comfortable family hauler with a premium feel rather than a bare-bones utility vehicle. There are 37.9% good or great deals in the market, which suggests there are still worthwhile listings to find.

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 people especially appreciating the Yukon’s comfort, space, and technology over the long term. The expert assessment also supports that impression by highlighting the SUV’s improved refinement and stronger overall package for this model year.

If you’re shopping used, the main long-term ownership risk is less about day-to-day satisfaction and more about choosing a well-kept example with the right equipment for your needs.

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

Key things to evaluate:

• Trim level: The Yukon comes in SLE, SLT, AT4, and Denali trims. The base setup includes the core comfort and safety equipment, while SLT adds more driver-assistance features. Denali is the most upscale choice, with its own interior design, real wood trim, leather-wrapped panels, unique stitching and piping, and available Ultimate Package features.
• Powertrain: The Yukon offers a standard 355-horsepower 5.3-litre V8 on most trims, a 420-horsepower 6.2-litre V8 in Denali, and an optional 3.0-litre inline six-cylinder turbo-diesel on every Yukon except the AT4.
• Safety package: Standard equipment includes forward collision warning, daytime pedestrian detection, automatic emergency braking below 80 km/h, automatic high-beam headlights, Teen Driver, a rear-seat reminder, and OnStar crash response and crisis assistance. 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.
• Infotainment: Every 2021 Yukon gets a 10.2-inch touchscreen with wireless Apple CarPlay, wireless Android Auto, and over-the-air updates. Higher trims can add wireless device charging, navigation, a 14-speaker Bose Performance Series audio system, and rear-seat entertainment with dual 12.6-inch displays.
• Fuel efficiency: The 6.2-litre V8 with 4WD is rated at 16.8 L/100 km in the city, 12.4 L/100 km on the highway, and 14.8 L/100 km combined.

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 trim to start with if you want the Yukon’s core space, comfort, and standard safety tech without paying for extras you may not need. It gives you the basic full-size SUV experience and is the most straightforward value play.
• SLT: This is the best-value trim for many shoppers because it adds blind-spot warning, rear cross-traffic warning, lane-departure warning, and lane-keeping assistance. If you want a better-equipped family SUV without jumping to luxury pricing, this is the sweet spot.
• AT4: Choose this if you want the Yukon’s more rugged character and the off-road-focused hardware described in the review, including improved approach angle, skid plates, and all-terrain tyres.
• Denali: This is the trim for you if you want the most premium Yukon experience. It adds the most upscale cabin treatment, exclusive design details, and access to the strongest engine and the richest tech and safety content.

The safety-package step up starts with SLT, while Denali is the trim that unlocks the most advanced driver-assistance features.

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

This is a moderate, selective buyer’s market, so you have room to shop carefully and compare listings.

• Deal availability: 37.9% of listings are priced as good or great deals.
• Inventory: There are 87 listings available.
• Price trend: Prices have softened 18.32% compared with last year.

If you find a listing below $52,896 CAD, 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 $52,979 CAD sits slightly below last year's $64,865 CAD.

That price drop suggests the Yukon has become more attractive to used buyers, which can help support demand in the near term. If you buy at today’s average or below, you may have a better chance of limiting depreciation compared with someone who bought when prices were higher. Strong demand for roomy, well-equipped full-size SUVs can also help keep resale interest steady.

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

Standard features include forward collision warning, daytime pedestrian detection, automatic emergency braking below 80 km/h, automatic high-beam headlights, Teen Driver parental report card technology, a rear-seat reminder system, and automatic crash response and crisis assistance through an active OnStar subscription.

Starting with SLT trim, 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 comes standard on Denali. You need Denali for adaptive cruise control and enhanced automatic emergency braking that works above 80 km/h.

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:

• 37.9% of listings are priced as good or great deals.
• Price trend: Prices have softened 18.32% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.
• The 2021 redesign brings more space, better ride quality, and a major technology upgrade.

Consider the 2022 if:

• At $62,730 CAD, the 2022 costs more than the current year's $52,979 CAD average.
• It adds a standard 12-inch driver information centre and enhanced connectivity.

The bottom line: The 2021 is the better pick if you want the redesigned Yukon at a lower used price and with strong owner satisfaction. If you’re willing to spend more for a newer model year and want the added 2022 tech upgrade, that can be worth considering.

How does the 2021 GMC Yukon compare to the 2021 Chevrolet Tahoe?

Our experts score the 2021 GMC Yukon 7.7/10 and the 2021 Chevrolet Tahoe 8.5/10. The Yukon brings a more premium-feeling cabin and a stronger upscale identity, while the Tahoe edges ahead on overall expert score. Both share the same engine output and similar market positioning, but the Yukon’s pricing is higher on average. If you want the more luxurious presentation, the Yukon has the edge; if you want the stronger overall expert pick, the Tahoe is the better bet.

Read our full side-by-side expert comparison here.

These recommendations are based on CarGurus' proprietary market data from November 4, 2026, CarGurus experts' opinions, and generative AI.