Used 2021 GMC Yukon XL for Sale nearBoston, MA

Compare 2021 GMC Yukon XL Trims in Boston, MA

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 $38,487
• 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 higher price of luxury trims.

• Avg. market price: $40,601 (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 ideal for those needing all-wheel drive without a significant price increase, offering essential features.

• Avg. market price: $40,601 (updated weekly)
• MPG/MPGe: 15 city / 19 hwy
• Inventory: 17 listings — lower availability; may limit negotiating room
• View SLE 4WD listings

SLT RWD — "Who It's For"

The SLT RWD is for buyers seeking a standard trim with added luxury features without going for the top-tier options.

• Avg. market price: $40,601 (updated weekly)
• MPG/MPGe: 15 city / 20 hwy
• Inventory: 22 listings
• View SLT RWD listings

SLT 4WD — "Who It's For"

The SLT 4WD is perfect for those wanting luxury features and all-wheel drive at a competitive price point.

• Avg. market price: $38,487 (updated weekly)
• MPG/MPGe: 15 city / 19 hwy
• Inventory: 83 listings
• View SLT 4WD listings

AT4 4WD — "Who It's For"

The AT4 4WD is designed for shoppers who want off-road capability combined with luxury features in their SUV.

• Avg. market price: $40,601 (updated weekly)
• MPG/MPGe: 15 city / 19 hwy
• Inventory: 40 listings
• View AT4 4WD listings

Denali RWD — "Who It's For"

The Denali RWD is for buyers who desire luxury features without the need for all-wheel drive, offering a premium experience.

• Avg. market price: $40,601 (updated weekly)
• MPG/MPGe: 14 city / 20 hwy
• Inventory: 21 listings
• View Denali RWD listings

Denali 4WD — "Who It's For"

The Denali 4WD is the choice for those seeking the ultimate luxury SUV experience with all-wheel drive capabilities.

• Avg. market price: $42,716 (updated weekly)
• MPG/MPGe: 13 city / 19 hwy
• Inventory: 209 listings — widest selection in the lineup
• View Denali 4WD listings

Trim Recommendations

Most Popular — Denali 4WD

With 209 active listings, the Denali 4WD is the clear volume leader in the lineup.

Browse Denali 4WD listings

Best Budget Option — SLT 4WD

At $38,487 avg market price — below the lineup median of $40,601 — 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 2, 2026, CarGurus experts' opinions, and generative AI.

How much does the 2021 GMC Yukon XL cost?

Prices have softened 13.41% compared to this time last year, making it a favorable time to shop this model year.

There are 1,479 listings available, which gives you a solid pool of options to compare.

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, comfort for long trips, and powerful engine performance. That lines up well if you want a full-size SUV that prioritizes passenger room and a more comfortable driving experience. With 32.5% of listings marked as good or great deals, you also have a decent chance of finding a competitively 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 confidence over long trips. That said, used buyers should still focus on maintenance history and overall condition, since long-term ownership risk is always tied to how the vehicle was cared for before you buy.

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

Accident-free inventory is solid at 76.3% — always verify the vehicle history report.

You should prioritize a history report first, then inspect the vehicle closely for signs of prior damage, uneven wear, or deferred maintenance. Because this is a large SUV, pay special attention to brakes, suspension feel, and how the cabin and cargo areas have held up. A careful test drive and a pre-purchase inspection can help you separate a clean, well-kept example from one that has been used hard.

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

This is a moderate market, so you can be selective without expecting a deep bargain on every listing.

• Deal availability: 32.5% of listings are priced as good or great deals.
• Inventory: There are 1,479 listings available.
• Price trend: Prices have softened 13.41% compared with last year.
• Clean inventory: 76.3% of listings are accident-free.

If you find a listing below $40,844, 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 $40,844 sits slightly below last year's $47,168.

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 several years. For a future seller, the current softness means resale value will depend heavily on condition, mileage, and how well the vehicle is documented. Well-kept examples should still draw interest because shoppers in this segment tend to value space, comfort, and capability.

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:

• 32.5% of listings are priced as good or great deals.
• Accident-free inventory is solid at 76.3% — always verify the vehicle history report.
• Price trend: Prices have softened 13.41% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.

The bottom line: The 2021 is the better pick if you want the more modern ride and room benefits that came with this model year, especially if you value comfort, space, and strong owner approval. If you are more price-sensitive, you can also compare nearby years to see whether a lower entry price outweighs the 2021’s updated feel and strong market support.

These recommendations are based on CarGurus' proprietary market data from September 11, 2026, CarGurus experts' opinions, and generative AI.