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 $30,460
• 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 4WD — "Who It's For"

The SLE 4WD is the pick for shoppers who want a well-equipped SUV without the luxury price tag. It's a solid choice for families needing space and features.

• Avg. market price: $39,913 (updated weekly)
• MPG/MPGe: 15 city / 19 hwy
• Inventory: 19 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-tier trims. It offers a solid mix of features.

• Avg. market price: $39,913 (updated weekly)
• MPG/MPGe: 15 city / 20 hwy
• Inventory: 24 listings
• View SLT RWD listings

SLT 4WD — "Who It's For"

The SLT 4WD is the pick for shoppers who want all-wheel drive capability without a hefty price tag. It combines luxury features with practicality.

• Avg. market price: $30,460 (updated weekly)
• MPG/MPGe: 15 city / 19 hwy
• Inventory: 93 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’s ideal for those who enjoy adventure without sacrificing comfort.

• Avg. market price: $49,999 (updated weekly)
• MPG/MPGe: 15 city / 19 hwy
• Inventory: 47 listings
• View AT4 4WD listings

Denali RWD — "Who It's For"

The Denali RWD is the pick for shoppers who want luxury features without the added complexity of 4WD. It’s perfect for those who prioritize comfort and style.

• Avg. market price: $39,913 (updated weekly)
• MPG/MPGe: 14 city / 20 hwy
• Inventory: 26 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 experience with off-road capability. It’s the most popular trim for good reason.

• Avg. market price: $41,383 (updated weekly)
• MPG/MPGe: 13 city / 19 hwy
• Inventory: 218 listings — widest selection in the lineup
• View Denali 4WD listings

Trim Recommendations

Most Popular — Denali 4WD

With 218 active listings, the Denali 4WD is the clear volume leader in the lineup.

Browse Denali 4WD listings

Best Budget Option — SLT 4WD

At $30,460 avg market price — below the lineup median of $39,913 — it's the most accessible entry point.

Browse SLT 4WD listings

Best for Fuel Economy — SLT RWD

The SLT RWD offers the best fuel efficiency in the lineup with 15/20 MPG.

Browse SLT RWD listings

These recommendations are based on CarGurus' proprietary market data from October 29, 2026, CarGurus experts' opinions, and generative AI.

How much does the 2021 GMC Yukon XL cost?

Prices have softened 14.54% compared to this time last year, making it a favorable time to shop this model year.

There are 1,528 listings available, which gives you a solid amount of inventory to compare.

Is the 2021 GMC Yukon XL a good car?

Yes — the 2021 GMC Yukon XL earns a 5/5 user rating, which points to strong owner satisfaction. Owners consistently praise its luxury feel, spacious interior, and comfort on long trips, and many also like its agility despite its large size. The overview also fits that feedback: you’re looking at a full-size SUV aimed at space, comfort, and premium-family use, with room for passengers and luggage. With 35.1% of listings marked as good or great deals, you have a meaningful set of opportunities to shop from.

Is the 2021 GMC Yukon XL reliable?

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

The owner summary also highlights dependable-feeling ownership traits, with praise for the Yukon XL’s comfort, luxury feel, and strong engine performance. That said, some owners want better brakes, so you should pay close attention to maintenance history and braking condition on any used example. For long-term ownership, the main risk is less about the cabin experience and more about finding a well-kept truck that has been maintained carefully.

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

At 73.1% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should start with a vehicle history report and confirm whether any prior damage was repaired properly. Then prioritize a pre-purchase inspection, with extra attention to brakes, suspension, and overall condition since this is a large SUV that can see heavy family and travel use. It also helps to focus on how the vehicle drives and whether the comfort and equipment still match the premium experience you expect.

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

This looks like a moderate, selective buyer’s market, so you can shop carefully and still find worthwhile options.

• Deal availability: 35.1% of listings are priced as good or great deals.
• Inventory: There are 1,528 listings available.
• Price trend: Prices have softened 14.54% compared with last year.
• Clean inventory: 73.1% of listings are accident-free.

If you find a listing below $39,468, 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 $39,468 sits slightly below last year's $46,183.

That price drop suggests the market has already adjusted downward, which can help you buy at a more favorable entry point today. For a future seller, it also means resale value may depend heavily on condition, mileage, and how well the vehicle has been maintained. If you keep the SUV clean, documented, and mechanically sound, you’ll be in a better position to stand out when it’s time to sell.

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:

• 35.1% of listings are priced as good or great deals.
• At 73.1% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 14.54% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.

The bottom line: You should lean toward the 2021 if you want the newer redesign, the premium-feeling cabin, and a market that has already softened enough to create some buying leverage. If your top priority is stretching your budget, a nearby older year may be worth considering, but the 2021 is the better pick if you want the updated space-and-comfort formula and are willing to shop carefully for a clean example.

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

These recommendations are based on CarGurus' proprietary market data from November 3, 2026, CarGurus experts' opinions, and generative AI.