Used 2021 GMC Yukon XL for Sale nearDenver, CO

Compare 2021 GMC Yukon XL Trims in Denver, CO

The 2021 GMC Yukon XL offers a range of trims from budget-friendly options to luxury models, catering to various needs and preferences.

• Starting at $26,316
• Best MPG/MPGe: 15 city / 20 hwy
• Most Popular: Denali 4WD

Trim Overview

Prices updated weekly from CarGurus listings.

Quick Compare Table

Listing prices sourced from CarGurus — updated weekly. OEM specs from manufacturer data.

Missing data displayed as "—".

Trim Deep Dives

SLE RWD — "Who It's For"

The SLE RWD is the pick for shoppers who want a well-equipped SUV without the luxury price tag. It's a great entry point into the Yukon XL lineup.

• Avg. market price: $36,362 (updated weekly)
• MPG/MPGe: 15 city / 20 hwy
• Inventory: 6 listings — lower availability; may limit negotiating room
• View SLE RWD listings

SLE 4WD — "Who It's For"

The SLE 4WD is the pick for shoppers who want all-wheel drive without paying a premium. It balances features and capability well.

• Avg. market price: $36,362 (updated weekly)
• MPG/MPGe: 15 city / 19 hwy
• Inventory: 13 listings — lower availability; may limit negotiating room
• View SLE 4WD listings

SLT RWD — "Who It's For"

The SLT RWD is the pick for shoppers who want a blend of luxury and value without going for the top trims. It offers many desirable features.

• Avg. market price: $26,999 (updated weekly)
• MPG/MPGe: 15 city / 20 hwy
• Inventory: 28 listings
• View SLT RWD listings

SLT 4WD — "Who It's For"

The SLT 4WD is the pick for shoppers who want luxury features with the added benefit of all-wheel drive. It’s a solid choice for families.

• Avg. market price: $26,316 (updated weekly)
• MPG/MPGe: 15 city / 19 hwy
• Inventory: 79 listings
• View SLT 4WD listings

AT4 4WD — "Who It's For"

The AT4 4WD is the pick for shoppers who want a sporty SUV with off-road capabilities. It combines ruggedness with comfort.

• Avg. market price: $50,999 (updated weekly)
• MPG/MPGe: 15 city / 19 hwy
• Inventory: 37 listings
• View AT4 4WD listings

Denali RWD — "Who It's For"

The Denali RWD is the pick for shoppers who want a luxury SUV with premium features at a competitive price. It’s a great choice for those who value comfort.

• Avg. market price: $36,362 (updated weekly)
• MPG/MPGe: 14 city / 20 hwy
• Inventory: 25 listings
• View Denali RWD listings

Denali 4WD — "Who It's For"

The Denali 4WD is the pick for shoppers who want the ultimate luxury experience in an SUV. It offers extensive features and capabilities.

• Avg. market price: $43,772 (updated weekly)
• MPG/MPGe: 13 city / 19 hwy
• Inventory: 228 listings — widest selection in the lineup
• View Denali 4WD listings

Trim Recommendations

Most Popular — Denali 4WD

With 228 active listings, the Denali 4WD is the clear volume leader in the lineup.

Browse Denali 4WD listings

Best Budget Option — SLT 4WD

At $26,316 avg market price — below the lineup median of $36,362 — it's the most accessible entry point.

Browse SLT 4WD listings

Best for Fuel Economy — SLE RWD

The SLE RWD offers the best fuel economy in the lineup with 15 city / 20 hwy MPG.

Browse SLE RWD listings

These recommendations are based on CarGurus' proprietary market data from September 12, 2026, CarGurus experts' opinions, and generative AI.

How much does the 2021 GMC Yukon XL cost?

Prices have softened 13.49% compared to this time last year, making it a favorable time to shop this model year.

There are 1,458 listings available, which gives you a meaningful amount of inventory to compare.

Is the 2021 GMC Yukon XL a good car?

Yes — owners rate it 5/5, which is a strong sign that it delivers on what shoppers want in a large SUV. The owner feedback consistently points to a luxury feel, a spacious interior, and comfort on long trips, while also noting that it feels agile for its size and offers strong engine performance. In practical terms, that makes it a good fit if you want a full-size SUV that prioritizes passenger room and road-trip comfort. With 33.3% of listings marked as good or great deals, you still have room to shop selectively.

Is the 2021 GMC Yukon XL reliable?

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

The owner feedback also emphasizes that it feels dependable for daily use and long trips, with praise centered on comfort and the confidence that comes from a vehicle people expect to count on. That said, used buyers should still pay close attention to maintenance records and overall condition, since long-term ownership risk is always tied to how the vehicle was cared for.

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

Accident-free inventory is solid at 76.2% — always verify the vehicle history report.

You should start with the history report so you can confirm accident status, title history, and service records before you get too far into the process. Then prioritize a thorough inspection of the brakes, since that is one of the main concerns owners raise, and pay close attention to overall wear because this is a large SUV that may have seen heavy family or towing use. It also makes sense to focus on how the vehicle drives and whether its comfort features, electronics, and seating surfaces are in the condition you expect for the price.

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

This is a moderate market for buyers, so you can shop carefully without feeling rushed.

• Deal availability: 33.3% of listings are priced as good or great deals.
• Inventory: There are 1,458 listings available.
• Price trend: Prices have softened 13.49% compared with last year.
• Clean inventory: 76.2% of listings are accident-free.

If you find a listing below $40,704, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2021 GMC Yukon XL's resale value?

The current average of $40,704 sits slightly below last year's $47,053.

That price movement suggests the market has already adjusted downward, which can help you buy at a more favorable point if you plan to keep the vehicle for a while. For a future seller, the key takeaway is that a lower entry price can reduce depreciation pressure if the market stabilizes. Strong condition, clean history, and desirable equipment should matter even more when you eventually resell.

Vehicles with strong owner satisfaction ratings, like this model year's 5/5, tend to retain buyer demand, which supports resale value over time.

Should I buy a 2021 GMC Yukon XL 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:

• 33.3% of listings are priced as good or great deals.
• Accident-free inventory is solid at 76.2% — always verify the vehicle history report.
• Price trend: Prices have softened 13.49% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.

The bottom line: If you want the more modern-feeling Yukon XL with strong owner satisfaction and a market that has become more favorable, the 2021 is the primary year to target. If your top priority is stretching your budget, a nearby older year may be worth considering, but you should expect to trade away some of the 2021’s newer design and comfort advantages.

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