Used 2021 GMC Yukon XL for SaleNationwide

Compare 2021 GMC Yukon XL Trims

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 $30,895
• 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 budget-friendly SUV without sacrificing essential features.

• Avg. market price: $30,895 (updated weekly)
• MPG/MPGe: 15 city / 20 hwy
• Inventory: 64 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 capability without a hefty price tag.

• Avg. market price: $31,197 (updated weekly)
• MPG/MPGe: 15 city / 19 hwy
• Inventory: 158 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 balance of luxury and practicality without going for the top trim.

• Avg. market price: $33,460 (updated weekly)
• MPG/MPGe: 15 city / 20 hwy
• Inventory: 422 listings
• View SLT RWD listings

SLT 4WD — "Who It's For"

The SLT 4WD is the pick for shoppers who want luxury features combined with all-wheel drive capability.

• Avg. market price: $38,859 (updated weekly)
• MPG/MPGe: 15 city / 19 hwy
• Inventory: 1,195 listings — widest selection in the lineup
• 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 and luxury features.

• Avg. market price: $41,740 (updated weekly)
• MPG/MPGe: 15 city / 19 hwy
• Inventory: 431 listings
• View AT4 4WD listings

Denali RWD — "Who It's For"

The Denali RWD is the pick for shoppers who want a luxurious SUV experience without the added complexity of 4WD.

• Avg. market price: $41,204 (updated weekly)
• MPG/MPGe: 14 city / 20 hwy
• Inventory: 425 listings
• View Denali RWD listings

Denali 4WD — "Who It's For"

The Denali 4WD is the pick for shoppers who want the ultimate luxury SUV with all-wheel drive capabilities.

• Avg. market price: $43,324 (updated weekly)
• MPG/MPGe: 13 city / 19 hwy
• Inventory: 2,579 listings — widest selection in the lineup
• View Denali 4WD listings

Trim Recommendations

Most Popular — Denali 4WD

With 2,579 active listings, the Denali 4WD is the clear volume leader in the lineup.

Browse Denali 4WD listings

Best Budget Option — SLE RWD

At $30,895 avg market price — below the lineup median of $38,859 — it's the most accessible entry point.

Browse SLE RWD listings

Best for Fuel Economy — SLE RWD

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

Browse SLE RWD listings

These recommendations are based on CarGurus' proprietary market data from September 2, 2026, CarGurus experts' opinions, and generative AI.

How much does the 2021 GMC Yukon XL cost?

Prices have softened 13.44% compared to this time last year, making it a favorable time to shop this model year.

There are 1,463 listings available, which gives you a solid amount of inventory to compare.

If you find a listing below $40,959.58, that's toward the low end of the year-round range and worth acting on quickly.

Is the 2021 GMC Yukon XL a good car?

Yes — the 5/5 user rating points to very strong owner satisfaction. Owners consistently praise the luxury feel, spacious interior, and comfort for long trips, and many also like how agile it feels for such a large SUV. For you, that makes it a strong fit if you want a full-size family hauler with upscale features and room to spare. With 32.1% of listings marked as good or great deals, you have a meaningful chance to find a well-priced example.

Is the 2021 GMC Yukon XL reliable?

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

The owner feedback also points to a dependable, trouble-free ownership experience for many shoppers, with praise centered on comfort and the ability to count on it for long trips. That said, some owners want better brakes, so you should pay close attention to braking feel and maintenance history when you shop used. For long-term ownership, the biggest risk is buying a neglected example, so condition and service records matter a lot.

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 a history report so you can confirm accident status, title history, and any major claims. Then prioritize a thorough inspection of the brakes, since owner feedback points to concerns there, and make sure the vehicle feels tight and well maintained on a test drive. Because this is a large, heavily used family SUV, overall condition matters as much as mileage.

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

This looks like a moderate market, so you can shop selectively without expecting a deep bargain on every listing.

• Deal availability: 32.1% of listings are priced as good or great deals.
• Inventory: There are 1,463 listings available.
• Price trend: Prices have softened 13.44% compared with last year.
• Clean inventory: 76.2% of listings are accident-free.

If you find a listing below $40,959.58, 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 $40,944 sits slightly below last year's $47,302.

That price movement suggests the market has already adjusted downward, which can help you buy more confidently now if you plan to keep the vehicle for a while. For a future seller, the key question is whether you buy at a sensible entry price, because that gives you more room to preserve value later. Strong condition and a clean history should matter a lot if you want the best resale outcome.

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:

• 32.1% 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 13.44% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.

The bottom line: The 2021 is the right pick if you want the newer-generation Yukon XL with strong owner satisfaction, a more modern ride, and plenty of space, especially if you can find one with clean history and a fair price. If you are especially price-sensitive, a nearby year may be worth considering, but the 2021 gives you a compelling balance of features, comfort, and market availability.

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